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-
upper Oligocene (1)
-
-
Paleocene
-
lower Paleocene
-
Danian (3)
-
-
Maria Farinha Formation (1)
-
middle Paleocene
-
Selandian (1)
-
-
upper Paleocene (2)
-
-
Paleocene-Eocene Thermal Maximum (4)
-
White River Group (1)
-
-
Shahejie Formation (2)
-
-
upper Cenozoic
-
Pinecrest Beds (1)
-
-
-
Dalradian (1)
-
Laurentide ice sheet (3)
-
Mesozoic
-
Cretaceous
-
Comanchean
-
Buda Limestone (2)
-
Edwards Formation (4)
-
Glen Rose Formation (1)
-
Trinity Group (1)
-
-
Dakota Formation (1)
-
Lower Cretaceous
-
Albian (2)
-
Aptian (5)
-
Barremian (1)
-
Edwards Formation (4)
-
Gault Clay (1)
-
Glen Rose Formation (1)
-
McMurray Formation (1)
-
Mowry Shale (1)
-
Neocomian (1)
-
Trinity Group (1)
-
-
Middle Cretaceous (1)
-
Nenjiang Formation (1)
-
Qingshankou Formation (1)
-
Upper Cretaceous
-
Buda Limestone (2)
-
Campanian
-
Dinosaur Park Formation (1)
-
upper Campanian (1)
-
-
Cardium Formation (1)
-
Cenomanian (6)
-
Coniacian (2)
-
Duwi Formation (1)
-
Gulfian
-
Eagle Ford Formation (2)
-
-
Maestrichtian (5)
-
Mesaverde Group (1)
-
Ripley Formation (1)
-
Santonian (1)
-
Senonian (6)
-
Turonian (5)
-
-
-
Jurassic
-
Coast Range Ophiolite (1)
-
Lower Jurassic
-
Pliensbachian (1)
-
Toarcian (4)
-
upper Liassic (1)
-
-
Middle Jurassic
-
Bathonian (2)
-
-
Upper Jurassic
-
Arab Formation (1)
-
Josephine Ophiolite (1)
-
Kimmeridgian (1)
-
Smackover Formation (1)
-
-
-
Triassic
-
Charlie Lake Formation (1)
-
Lower Triassic
-
Permian-Triassic boundary (3)
-
-
Middle Triassic
-
Doig Formation (1)
-
-
Montney Formation (1)
-
Upper Triassic
-
Chinle Formation (1)
-
-
-
Yanshanian (1)
-
-
Moldanubian (1)
-
Paleozoic
-
Cambrian
-
Lower Cambrian
-
Atdabanian (1)
-
-
Middle Cambrian
-
Burgess Shale (1)
-
-
Upper Cambrian
-
Eau Claire Formation (1)
-
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (2)
-
-
Mississippian
-
Harrodsburg Limestone (1)
-
Lower Mississippian
-
Lodgepole Formation (2)
-
Osagian
-
Burlington Limestone (2)
-
-
-
Middle Mississippian
-
Visean (1)
-
-
Upper Mississippian
-
Chesterian
-
Imo Formation (1)
-
-
Meramecian
-
Saint Louis Limestone (1)
-
Sainte Genevieve Limestone (1)
-
Salem Limestone (1)
-
-
-
Windsor Group (1)
-
-
Pennsylvanian
-
Kittanning Formation (1)
-
Middle Pennsylvanian
-
Allegheny Group (1)
-
Breathitt Formation (1)
-
Desmoinesian (1)
-
-
Morrow Formation (1)
-
Upper Pennsylvanian
-
Holder Formation (1)
-
-
-
-
Devonian
-
Beaverhill Lake Group (1)
-
Fisset Brook Formation (1)
-
Upper Devonian
-
Famennian
-
Wabamun Group (1)
-
-
Frasnian (1)
-
-
-
Ellis Bay Formation (1)
-
Horton Group (1)
-
Hunton Group (1)
-
lower Paleozoic
-
Conococheague Formation (1)
-
-
Ordovician
-
Lower Ordovician (1)
-
Middle Ordovician (1)
-
Upper Ordovician (3)
-
Viola Limestone (1)
-
-
Permian
-
Coconino Sandstone (1)
-
Glorieta Sandstone (1)
-
Kaibab Formation (1)
-
Lower Permian (1)
-
Rotliegendes (1)
-
Toroweap Formation (1)
-
Upper Permian
-
Permian-Triassic boundary (3)
-
Zechstein (1)
-
-
-
Silurian
-
Bass Islands Dolomite (1)
-
Lower Silurian
-
Tuscarora Formation (1)
-
-
Middle Silurian
-
Clinton Group (1)
-
-
Upper Silurian (1)
-
-
upper Paleozoic (3)
-
Weber Sandstone (1)
-
Wissahickon Formation (1)
-
Woodford Shale (1)
-
-
Phanerozoic (13)
-
Precambrian
-
Archean
-
Neoarchean (2)
-
Sausar Series (1)
-
-
Delhi Supergroup (1)
-
Transvaal Supergroup (1)
-
upper Precambrian
-
Proterozoic
-
Bambui Group (1)
-
Great Oxidation Event (2)
-
Malmani Subgroup (1)
-
Mesoproterozoic (2)
-
Neoproterozoic
-
Ediacaran (2)
-
Sturtian (1)
-
Vendian (1)
-
-
Paleoproterozoic (4)
-
-
-
-
Saxothuringian (1)
-
-
igneous rocks
-
igneous rocks
-
carbonatites (10)
-
kimberlite (1)
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peperite (1)
-
picrite (1)
-
plutonic rocks
-
anorthosite
-
gabbroic anorthosite (1)
-
-
diabase (2)
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diorites
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quartz diorites (1)
-
-
gabbros
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norite (1)
-
-
granites
-
alkali granites (1)
-
A-type granites (1)
-
charnockite (2)
-
I-type granites (1)
-
monzogranite (1)
-
S-type granites (3)
-
-
granodiorites (2)
-
monzodiorite (2)
-
pegmatite (19)
-
syenites
-
alkali syenites (1)
-
nepheline syenite (1)
-
-
ultramafics
-
chromitite (2)
-
peridotites
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dunite (1)
-
harzburgite (4)
-
lherzolite (2)
-
spinel peridotite (1)
-
-
pyroxenite (1)
-
-
-
porphyry (1)
-
volcanic rocks
-
andesites
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boninite (3)
-
-
basalts
-
alkali basalts
-
mugearite (1)
-
-
mid-ocean ridge basalts (3)
-
ocean-island basalts (1)
-
-
basanite
-
ankaramite (1)
-
-
dacites (2)
-
glasses (7)
-
melilitite (1)
-
nephelinite (2)
-
pyroclastics
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ignimbrite (1)
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tuff (3)
-
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rhyodacites (1)
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rhyolites
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comendite (1)
-
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trachyandesites (2)
-
-
-
ophiolite (3)
-
pyrolite (1)
-
volcanic ash (5)
-
-
metamorphic rocks
-
K-bentonite (1)
-
metamorphic rocks
-
amphibolites (4)
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eclogite (5)
-
garnetite (1)
-
gneisses
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augen gneiss (1)
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paragneiss (2)
-
-
granulites (2)
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marbles (5)
-
metaigneous rocks
-
metagabbro (1)
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metatuff (1)
-
serpentinite (4)
-
-
metasedimentary rocks
-
khondalite (1)
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metapelite (2)
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paragneiss (2)
-
-
metasomatic rocks
-
fenite (3)
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rodingite (3)
-
serpentinite (4)
-
skarn (8)
-
-
metavolcanic rocks (3)
-
migmatites
-
anatexite (1)
-
-
mylonites
-
ultramylonite (1)
-
-
quartzites (3)
-
schists
-
blueschist (1)
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muscovite schist (1)
-
-
-
ophiolite (3)
-
-
meteorites
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meteorites
-
Northwest Africa Meteorites (1)
-
stony meteorites
-
acapulcoite (1)
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achondrites
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diogenite (1)
-
eucrite (1)
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lunar meteorites (1)
-
Martian meteorites (1)
-
-
chondrites
-
carbonaceous chondrites
-
CH chondrites (1)
-
CM chondrites
-
Murray Meteorite (1)
-
-
CV chondrites
-
Allende Meteorite (3)
-
-
-
ordinary chondrites
-
L chondrites (1)
-
LL chondrites
-
Semarkona Meteorite (1)
-
-
-
rumurutiites (1)
-
-
-
-
-
minerals
-
arsenates
-
austinite (1)
-
conichalcite (1)
-
pharmacolite (1)
-
-
arsenides
-
arsenopyrite (1)
-
-
borates (4)
-
carbonates
-
alstonite (1)
-
ankerite (4)
-
aragonite (49)
-
bastnaesite (3)
-
calcite (96)
-
dolomite (41)
-
huntite (1)
-
hydromagnesite (1)
-
magnesian calcite (7)
-
magnesite (3)
-
meionite (2)
-
monohydrocalcite (1)
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parisite (1)
-
rhodochrosite (3)
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siderite (3)
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spurrite (2)
-
strontianite (1)
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synchysite (1)
-
vaterite (2)
-
witherite (4)
-
-
halides
-
chlorides
-
eudialyte (1)
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halite (5)
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sylvite (1)
-
-
fluorides
-
bastnaesite (3)
-
fluorite (6)
-
parisite (1)
-
prosopite (1)
-
synchysite (1)
-
topaz (2)
-
-
-
hydrates (5)
-
K-bentonite (1)
-
manganese minerals (2)
-
minerals (83)
-
molybdates
-
powellite (1)
-
-
native elements
-
diamond (4)
-
fullerene (1)
-
graphite (2)
-
-
nitrates (1)
-
oxides
-
aluminum oxides (2)
-
armalcolite (1)
-
birnessite (2)
-
brucite (1)
-
chromite (1)
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corundum (1)
-
ferrihydrite (1)
-
ferropericlase (1)
-
gahnite (1)
-
goethite (3)
-
hematite (5)
-
hoegbomite (1)
-
hydroxides
-
oxyhydroxides (3)
-
-
ilmenite (6)
-
iron oxides (9)
-
magnetite (5)
-
manganese oxides (2)
-
niobates
-
fergusonite (2)
-
pyrochlore (1)
-
samarskite (1)
-
-
periclase (3)
-
perovskite (3)
-
portlandite (1)
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rancieite (2)
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rutile (3)
-
spinel (2)
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spinel group (2)
-
tantalates
-
microlite (1)
-
tantalite (1)
-
-
thorianite (1)
-
titanium oxides (1)
-
titanomagnetite (1)
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zincite (1)
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zirconolite (1)
-
-
phosphates
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apatite (23)
-
autunite (2)
-
britholite (1)
-
brushite (3)
-
carbonate apatite (1)
-
chlorapatite (1)
-
crandallite (1)
-
florencite (1)
-
fluorapatite (11)
-
francolite (2)
-
goyazite (2)
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graftonite (4)
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herderite (1)
-
hydroxylapatite (13)
-
merrillite (1)
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monazite (8)
-
monetite (1)
-
montebrasite (1)
-
sarcopside (1)
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triphylite (1)
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vivianite (1)
-
whitlockite (1)
-
xenotime (1)
-
-
selenates (2)
-
selenites (1)
-
silicates
-
aluminosilicates (9)
-
asbestos (1)
-
borosilicates (5)
-
chain silicates
-
aenigmatite group
-
sapphirine (1)
-
-
amphibole group
-
clinoamphibole
-
actinolite (2)
-
cummingtonite (2)
-
edenite (1)
-
glaucophane (1)
-
hastingsite (2)
-
hornblende (3)
-
kaersutite (1)
-
pargasite (1)
-
richterite (2)
-
tremolite (3)
-
tschermakite (1)
-
-
orthoamphibole
-
anthophyllite (1)
-
gedrite (1)
-
-
-
bavenite (1)
-
prehnite (2)
-
pyroxene group
-
clinopyroxene
-
augite (3)
-
diopside (11)
-
hedenbergite (2)
-
jadeite (1)
-
omphacite (2)
-
pigeonite (2)
-
-
orthopyroxene
-
enstatite (5)
-
ferrosilite (2)
-
hypersthene (1)
-
-
-
rhodonite group
-
rhodonite (1)
-
-
tobermorite (1)
-
wollastonite group
-
pectolite (1)
-
wollastonite (5)
-
-
-
feldspathoids (2)
-
framework silicates
-
danburite (1)
-
feldspar group
-
alkali feldspar
-
anorthoclase (1)
-
celsian (1)
-
K-feldspar (8)
-
microcline (2)
-
orthoclase (1)
-
perthite (1)
-
sanidine (4)
-
-
barium feldspar
-
celsian (1)
-
paracelsian (1)
-
-
plagioclase
-
albite (3)
-
anorthite (8)
-
bytownite (1)
-
labradorite (1)
-
oligoclase (1)
-
-
-
leucite (3)
-
myrmekite (1)
-
nepheline group
-
nepheline (2)
-
-
scapolite group
-
meionite (2)
-
scapolite (3)
-
-
silica minerals
-
coesite (1)
-
opal
-
opal-A (1)
-
opal-CT (1)
-
-
quartz (20)
-
stishovite (1)
-
tridymite (2)
-
-
sodalite group
-
lazurite (2)
-
-
zeolite group
-
analcime (1)
-
chabazite (1)
-
clinoptilolite (8)
-
epistilbite (1)
-
erionite (2)
-
faujasite (1)
-
heulandite (6)
-
laumontite (2)
-
leonhardite (1)
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mesolite (1)
-
mordenite (1)
-
natrolite (2)
-
phillipsite (2)
-
pollucite (2)
-
scolecite (2)
-
stilbite (1)
-
wairakite (3)
-
yugawaralite (1)
-
-
-
magnesian silicates (1)
-
orthosilicates
-
nesosilicates
-
andalusite (1)
-
braunite (1)
-
britholite group
-
britholite (1)
-
-
datolite group
-
datolite (1)
-
gadolinite (1)
-
-
garnet group
-
almandine (7)
-
andradite (3)
-
grossular (14)
-
hydrogarnet (2)
-
majorite (3)
-
pyrope (4)
-
schorlomite (2)
-
spessartine (2)
-
-
kyanite (3)
-
larnite (1)
-
merwinite (3)
-
olivine group
-
fayalite (1)
-
forsterite (2)
-
kirschsteinite (1)
-
monticellite (2)
-
olivine (14)
-
ringwoodite (3)
-
tephroite (1)
-
wadsleyite (3)
-
-
phenakite group
-
willemite (2)
-
-
sillimanite (2)
-
spurrite (2)
-
staurolite (3)
-
titanite group
-
titanite (5)
-
-
topaz (2)
-
zircon group
-
coffinite (1)
-
zircon (6)
-
-
-
sorosilicates
-
axinite group (1)
-
chevkinite group (1)
-
epidote group
-
allanite (2)
-
epidote (1)
-
piemontite (1)
-
zoisite (1)
-
-
lawsonite (2)
-
melilite group
-
akermanite (1)
-
gehlenite (4)
-
melilite (2)
-
-
vesuvianite (2)
-
-
-
ring silicates
-
cordierite (2)
-
eudialyte (1)
-
tourmaline group
-
dravite (2)
-
elbaite (1)
-
foitite (1)
-
schorl (3)
-
uvite (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (7)
-
-
clay minerals
-
allophane (1)
-
beidellite (3)
-
halloysite (2)
-
hectorite (2)
-
kaolinite (16)
-
montmorillonite (57)
-
nontronite (2)
-
saponite (2)
-
smectite (28)
-
vermiculite (5)
-
-
illite (13)
-
margarite (4)
-
mica group
-
biotite (3)
-
glauconite (3)
-
lepidolite (1)
-
muscovite (4)
-
paragonite (1)
-
phlogopite (1)
-
-
palygorskite (2)
-
pyrophyllite (1)
-
rectorite (3)
-
serpentine group
-
antigorite (1)
-
chrysotile (1)
-
lizardite (1)
-
-
-
-
sulfates
-
alunite (1)
-
anhydrite (5)
-
barite (2)
-
epsomite (1)
-
gypsum (12)
-
hexahydrite (1)
-
kieserite (1)
-
lazurite (2)
-
-
sulfides
-
arsenopyrite (1)
-
chalcopyrite (2)
-
copper sulfides (1)
-
galena (1)
-
lazurite (2)
-
pyrite (11)
-
pyrrhotite (3)
-
sphalerite (5)
-
-
tungstates
-
scheelite (3)
-
-
uranium minerals (4)
-
vanadates
-
descloizite (1)
-
-
-
Primary terms
-
absolute age (15)
-
Africa
-
Central Africa
-
Rwanda (1)
-
-
East Africa
-
Ethiopia (1)
-
Tanzania
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Oldoinyo Lengai (1)
-
-
Uganda (1)
-
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Kalahari Desert (1)
-
Madagascar
-
Antananarivo Madagascar (1)
-
-
North Africa
-
Egypt
-
Sinai Egypt (2)
-
-
Tunisia
-
El Kef Tunisia (1)
-
-
-
Sahara (1)
-
Southern Africa
-
Kaapvaal Craton (1)
-
Karoo Basin (1)
-
Namibia
-
Tsumeb Namibia (1)
-
-
South Africa
-
Bushveld Complex (1)
-
Cape Province region (1)
-
Free State South Africa (2)
-
KwaZulu-Natal South Africa (1)
-
Mpumalanga South Africa (2)
-
Transvaal region (1)
-
-
-
West Africa
-
Cameroon (1)
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Ivory Coast (1)
-
Senegal (1)
-
-
-
Antarctica
-
Antarctic ice sheet
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East Antarctic ice sheet (1)
-
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Larsemann Hills (1)
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South Shetland Islands
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King George Island (1)
-
-
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Arctic Ocean
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East Siberian Sea (1)
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Norwegian Sea (1)
-
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Arctic region
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Greenland
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West Greenland (1)
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Svalbard
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Spitsbergen
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Spitsbergen Island
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Brogger Peninsula (1)
-
-
-
-
-
Asia
-
Altai Mountains (1)
-
Arabian Peninsula
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Oman (5)
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Qatar (1)
-
Saudi Arabia
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Ghawar Field (1)
-
-
United Arab Emirates (1)
-
-
Central Asia
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Kazakhstan (1)
-
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Far East
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Borneo
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Kalimantan Indonesia (2)
-
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China
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Bohaiwan Basin (2)
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Donghai China (1)
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Fujian China (2)
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Guizhou China (1)
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Heilongjiang China (2)
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Hubei China
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Yichang China (1)
-
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Inner Mongolia China
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Bayan Obo China (1)
-
-
Jiangsu China (1)
-
Meishan China (2)
-
Ordos Basin (1)
-
Shandong China
-
Dongying Depression (2)
-
Jiyang Depression (1)
-
-
Sichuan China (2)
-
Songliao Basin (1)
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South China Block (1)
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Globorotaliidae
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Globorotalia
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Globorotalia menardii (1)
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Hedbergella (1)
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Neogloboquadrina
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Neogloboquadrina pachyderma (4)
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Orbitoidacea
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Amphistegina (1)
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Rotaliacea
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Nummulitidae
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Nummulites (1)
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Radiolaria (3)
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Vermes
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Annelida (1)
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Polychaeta
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Serpulidae (1)
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scolecodonts (1)
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isotopes
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radioactive isotopes
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Be-10 (1)
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C-14 (15)
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Ca-41 (1)
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Cl-36 (2)
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Cs-137 (4)
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I-129 (1)
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K-40 (2)
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (2)
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Pb-208/Pb-204 (1)
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Pb-210 (3)
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Ra-226 (2)
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Rb-87/Sr-86 (2)
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Re-187/Os-188 (1)
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Sm-147/Nd-144 (2)
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Sr-90 (1)
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Tc-99 (2)
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Th-232 (1)
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U-234 (1)
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U-238 (2)
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U-238/U-234 (1)
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stable isotopes
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Al-27 (3)
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B-11/B-10 (3)
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C-13 (4)
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C-13/C-12 (74)
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Ca-44 (2)
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Ca-44/Ca-40 (24)
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Cu-65 (1)
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D/H (12)
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deuterium (1)
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Fe-54 (1)
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Fe-56 (1)
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Fe-56/Fe-54 (1)
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He-4 (1)
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Hf-177/Hf-176 (1)
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Li-7/Li-6 (2)
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Mg-26/Mg-24 (4)
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Nd-144/Nd-143 (8)
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Ni-60 (1)
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O-17 (2)
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O-18 (3)
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O-18/O-16 (114)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (2)
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Pb-207/Pb-206 (3)
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Pb-208/Pb-204 (1)
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Pb-208/Pb-206 (1)
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Rb-87/Sr-86 (2)
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Re-187/Os-188 (1)
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S-33/S-32 (1)
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S-34/S-32 (12)
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Si-29 (1)
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Si-29/Si-28 (2)
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Si-30/Si-28 (1)
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Sm-147/Nd-144 (2)
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Sr-87/Sr-86 (35)
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Zn-66 (1)
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land use (5)
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lava (8)
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limestone deposits (3)
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magmas (30)
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Malay Archipelago
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Borneo
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Kalimantan Indonesia (2)
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mantle (27)
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maps (1)
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Mediterranean region
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Aegean Islands
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Greek Aegean Islands (1)
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Mediterranean Sea
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East Mediterranean
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Aegean Sea (1)
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West Mediterranean
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Alboran Sea (1)
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Mesozoic
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Cretaceous
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Comanchean
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Buda Limestone (2)
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Edwards Formation (4)
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Glen Rose Formation (1)
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Trinity Group (1)
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Dakota Formation (1)
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Lower Cretaceous
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Albian (2)
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Aptian (5)
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Barremian (1)
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Edwards Formation (4)
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Gault Clay (1)
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Glen Rose Formation (1)
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McMurray Formation (1)
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Mowry Shale (1)
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Neocomian (1)
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Trinity Group (1)
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Middle Cretaceous (1)
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Nenjiang Formation (1)
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Qingshankou Formation (1)
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Upper Cretaceous
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Buda Limestone (2)
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Campanian
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Dinosaur Park Formation (1)
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upper Campanian (1)
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Cardium Formation (1)
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Cenomanian (6)
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Coniacian (2)
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Duwi Formation (1)
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Gulfian
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Eagle Ford Formation (2)
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Maestrichtian (5)
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Mesaverde Group (1)
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Ripley Formation (1)
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Santonian (1)
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Senonian (6)
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Turonian (5)
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Jurassic
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Coast Range Ophiolite (1)
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Lower Jurassic
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Pliensbachian (1)
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Toarcian (4)
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upper Liassic (1)
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Middle Jurassic
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Bathonian (2)
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Upper Jurassic
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Arab Formation (1)
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Josephine Ophiolite (1)
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Kimmeridgian (1)
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Smackover Formation (1)
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Triassic
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Charlie Lake Formation (1)
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Lower Triassic
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Permian-Triassic boundary (3)
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Middle Triassic
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Doig Formation (1)
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Montney Formation (1)
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Upper Triassic
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Chinle Formation (1)
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Yanshanian (1)
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metal ores
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base metals (1)
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chromite ores (2)
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copper ores (9)
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gold ores (6)
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IOCG deposits (2)
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iron ores (2)
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lead ores (2)
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lead-zinc deposits (5)
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magnesium ores (1)
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manganese ores (2)
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nickel ores (3)
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niobium ores (1)
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platinum ores (1)
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rare earth deposits (3)
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silver ores (1)
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thorium ores (1)
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uranium ores (4)
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vanadium ores (1)
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zinc ores (3)
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metals
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actinides
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thorium
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Th-232 (1)
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uranium
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U-234 (1)
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U-238 (2)
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U-238/U-234 (1)
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alkali metals
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cesium
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Cs-137 (4)
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lithium
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Li-7/Li-6 (2)
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potassium
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K-40 (2)
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rubidium
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Rb-87/Sr-86 (2)
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sodium (182)
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alkaline earth metals
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barium
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Ba/Ca (5)
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beryllium
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Be-10 (1)
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calcium
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Ba/Ca (5)
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Ca-41 (1)
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Ca-44 (2)
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Ca-44/Ca-40 (24)
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Mg/Ca (92)
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Sr/Ca (41)
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magnesium
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Mg/Ca (92)
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Mg-26/Mg-24 (4)
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radium
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Ra-226 (2)
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strontium
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Rb-87/Sr-86 (2)
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Sr/Ca (41)
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Sr-87/Sr-86 (35)
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Sr-90 (1)
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aluminum
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Al-27 (3)
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antimony (3)
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arsenic (7)
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bismuth (2)
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cadmium (13)
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chromium (14)
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cobalt (11)
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copper
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Cu-65 (1)
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gallium (2)
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germanium (1)
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gold (1)
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hafnium
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Hf-177/Hf-176 (1)
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iron
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Fe-54 (1)
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Fe-56 (1)
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Fe-56/Fe-54 (1)
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ferric iron (6)
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ferrous iron (4)
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lead
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Pb-206/Pb-204 (3)
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Pb-207/Pb-204 (2)
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Pb-207/Pb-206 (3)
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Pb-208/Pb-204 (1)
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Pb-208/Pb-206 (1)
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Pb-210 (3)
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manganese (64)
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mercury (1)
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molybdenum (6)
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nickel
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Ni-60 (1)
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niobium (4)
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platinum group
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iridium (5)
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osmium
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Os-188/Os-187 (1)
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Re-187/Os-188 (1)
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palladium (2)
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platinum (1)
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platinum ores (1)
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rhodium (1)
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ruthenium (2)
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precious metals (1)
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rare earths
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cerium (11)
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europium (3)
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lanthanum (7)
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neodymium
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Nd-144/Nd-143 (8)
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Sm-147/Nd-144 (2)
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samarium
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Sm-147/Nd-144 (2)
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scandium (6)
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ytterbium (2)
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yttrium (7)
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rhenium
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Re-187/Os-188 (1)
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silver (1)
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tantalum (1)
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technetium
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Tc-99 (2)
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titanium (26)
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tungsten (3)
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vanadium (3)
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zinc
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Zn-66 (1)
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zirconium (12)
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metamorphic rocks
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amphibolites (4)
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eclogite (5)
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garnetite (1)
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gneisses
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augen gneiss (1)
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paragneiss (2)
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granulites (2)
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marbles (5)
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metaigneous rocks
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metagabbro (1)
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metatuff (1)
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serpentinite (4)
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metasedimentary rocks
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khondalite (1)
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metapelite (2)
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paragneiss (2)
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metasomatic rocks
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fenite (3)
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rodingite (3)
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serpentinite (4)
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skarn (8)
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metavolcanic rocks (3)
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migmatites
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anatexite (1)
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mylonites
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ultramylonite (1)
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quartzites (3)
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schists
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blueschist (1)
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muscovite schist (1)
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metamorphism (38)
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metasomatism (44)
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meteorites
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Northwest Africa Meteorites (1)
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stony meteorites
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acapulcoite (1)
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achondrites
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diogenite (1)
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eucrite (1)
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lunar meteorites (1)
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Martian meteorites (1)
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chondrites
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carbonaceous chondrites
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CH chondrites (1)
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CM chondrites
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Murray Meteorite (1)
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CV chondrites
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Allende Meteorite (3)
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ordinary chondrites
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L chondrites (1)
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LL chondrites
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Semarkona Meteorite (1)
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rumurutiites (1)
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Mexico
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Baja California Sur Mexico (1)
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Chihuahua Mexico
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Sierra Pena Blanca (1)
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Durango Mexico
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Mapimi Mexico (1)
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Guerrero Mexico (1)
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Hidalgo Mexico (1)
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Sierra Madre Occidental (1)
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mineral deposits, genesis (20)
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mineral exploration (6)
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mineral resources (1)
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mineralogy (18)
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minerals (83)
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Mohorovicic discontinuity (1)
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Moon (5)
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mud volcanoes (1)
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nitrogen
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organic nitrogen (1)
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noble gases
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argon (1)
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helium
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He-4 (1)
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nodules (1)
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North America
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Appalachian Basin (2)
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Appalachians
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Blue Ridge Province (1)
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Valley and Ridge Province (1)
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Basin and Range Province
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Great Basin (1)
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Canadian Shield
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Grenville Province
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Central Metasedimentary Belt (1)
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Slave Province (1)
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Superior Province
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Abitibi Belt (1)
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Chihuahuan Desert (1)
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Great Lakes region (1)
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Great Plains
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Northern Great Plains (1)
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Gulf Coastal Plain (11)
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North American Cordillera (1)
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North American Craton (1)
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Ogilvie Mountains (1)
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Rocky Mountains
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Canadian Rocky Mountains (1)
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U. S. Rocky Mountains
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Bighorn Mountains (1)
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Wasatch Range (1)
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-
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Sonoran Desert (1)
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Western Canada Sedimentary Basin (1)
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Western Interior (1)
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Williston Basin (1)
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Northern Hemisphere (1)
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ocean basins (1)
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ocean circulation (4)
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Ocean Drilling Program
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Leg 117
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ODP Site 722 (1)
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ODP Site 723 (1)
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Leg 130
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ODP Site 806 (1)
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Leg 143
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ODP Site 865 (1)
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ODP Site 866 (1)
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Leg 144
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ODP Site 871 (1)
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Leg 154
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ODP Site 926 (1)
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ODP Site 929 (1)
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Leg 161
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ODP Site 978 (1)
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Leg 162
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ODP Site 984 (1)
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Leg 165
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ODP Site 999 (1)
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Leg 171B
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ODP Site 1050 (1)
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Leg 172
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ODP Site 1055 (1)
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Leg 174A
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ODP Site 1073 (1)
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Leg 174AX
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Bass River Site (1)
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Leg 184
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ODP Site 1143 (1)
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ODP Site 1145 (1)
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ODP Site 1146 (1)
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Leg 198
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ODP Site 1209 (2)
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Leg 199
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ODP Site 1218 (2)
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Leg 208
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ODP Site 1262 (1)
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ODP Site 1263 (1)
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ODP Site 1265 (1)
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-
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ocean floors (3)
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Oceania
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Melanesia
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New Caledonia (1)
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Micronesia
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Marshall Islands
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Enewetak Atoll (1)
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-
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Polynesia
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Hawaii
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Hawaii County Hawaii
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Hawaii Island
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Kohala (1)
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Kona (1)
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-
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oceanography (2)
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oil and gas fields (8)
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orogeny (3)
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oxygen
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dissolved oxygen (4)
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O-17 (2)
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O-18 (3)
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O-18/O-16 (114)
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Pacific Coast (1)
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Pacific Ocean
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East Pacific
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East Pacific Rise (2)
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Northeast Pacific
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Gulf of California (1)
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Gulf of Panama (1)
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Hydrate Ridge (1)
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Siqueiros fracture zone (1)
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-
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Equatorial Pacific (3)
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North Pacific
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Bering Sea (1)
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Mid-Pacific Mountains
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Resolution Seamount (1)
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Northeast Pacific
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Gulf of California (1)
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Gulf of Panama (1)
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Hydrate Ridge (1)
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Siqueiros fracture zone (1)
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Northwest Pacific
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East China Sea (1)
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Shatsky Rise (2)
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South China Sea (5)
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-
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South Pacific
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Southwest Pacific
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Campbell Plateau (1)
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Coral Sea
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Great Barrier Reef (1)
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Tasman Sea (1)
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-
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West Pacific
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Northwest Pacific
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East China Sea (1)
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Shatsky Rise (2)
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South China Sea (5)
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Resolution Seamount (1)
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Southwest Pacific
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Campbell Plateau (1)
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Coral Sea
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Great Barrier Reef (1)
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Tasman Sea (1)
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-
-
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paleobotany (1)
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paleoclimatology (62)
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paleoecology (28)
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paleogeography (10)
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paleomagnetism (5)
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paleontology (7)
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Paleozoic
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Cambrian
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Lower Cambrian
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Atdabanian (1)
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Middle Cambrian
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Burgess Shale (1)
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Upper Cambrian
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Eau Claire Formation (1)
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Carboniferous
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Lower Carboniferous
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Dinantian (2)
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Mississippian
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Harrodsburg Limestone (1)
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Lower Mississippian
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Lodgepole Formation (2)
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Osagian
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Burlington Limestone (2)
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Middle Mississippian
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Visean (1)
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Upper Mississippian
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Chesterian
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Imo Formation (1)
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Meramecian
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Saint Louis Limestone (1)
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Sainte Genevieve Limestone (1)
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Salem Limestone (1)
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Windsor Group (1)
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Pennsylvanian
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Kittanning Formation (1)
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Middle Pennsylvanian
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Allegheny Group (1)
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Breathitt Formation (1)
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Desmoinesian (1)
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Morrow Formation (1)
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Upper Pennsylvanian
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Holder Formation (1)
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Devonian
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Beaverhill Lake Group (1)
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Fisset Brook Formation (1)
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Upper Devonian
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Famennian
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Wabamun Group (1)
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Frasnian (1)
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Ellis Bay Formation (1)
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Horton Group (1)
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Hunton Group (1)
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lower Paleozoic
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Conococheague Formation (1)
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Ordovician
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Lower Ordovician (1)
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Middle Ordovician (1)
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Upper Ordovician (3)
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Viola Limestone (1)
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Permian
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Coconino Sandstone (1)
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Glorieta Sandstone (1)
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Kaibab Formation (1)
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Lower Permian (1)
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Rotliegendes (1)
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Toroweap Formation (1)
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Upper Permian
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Permian-Triassic boundary (3)
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Zechstein (1)
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-
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Silurian
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Bass Islands Dolomite (1)
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Lower Silurian
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Tuscarora Formation (1)
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Middle Silurian
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Clinton Group (1)
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Upper Silurian (1)
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upper Paleozoic (3)
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Weber Sandstone (1)
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Wissahickon Formation (1)
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Woodford Shale (1)
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palynomorphs
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Dinoflagellata (1)
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miospores
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pollen (1)
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-
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paragenesis (13)
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peat deposits (1)
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permafrost (2)
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petroleum
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natural gas
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coalbed methane (1)
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shale gas (1)
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shale oil (1)
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petrology (16)
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Phanerozoic (13)
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phase equilibria (52)
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phosphate deposits (1)
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phosphorus (22)
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planetology (1)
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Plantae
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algae
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calcareous algae (1)
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Chlorophyta
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Chlorophyceae
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Codiaceae
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Halimeda (1)
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-
-
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Coccolithophoraceae
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Coccolithus (1)
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Emiliania
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Emiliania huxleyi (1)
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-
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diatoms (1)
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nannofossils
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Nannoconus (1)
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Rhodophyta
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Corallinaceae (1)
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-
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Spermatophyta
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Gymnospermae
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Coniferales (1)
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-
-
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plate tectonics (12)
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pollution (36)
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potash (1)
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Precambrian
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Archean
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Neoarchean (2)
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Sausar Series (1)
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Delhi Supergroup (1)
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Transvaal Supergroup (1)
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upper Precambrian
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Proterozoic
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Bambui Group (1)
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Great Oxidation Event (2)
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Malmani Subgroup (1)
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Mesoproterozoic (2)
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Neoproterozoic
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Ediacaran (2)
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Sturtian (1)
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Vendian (1)
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Paleoproterozoic (4)
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problematic fossils (1)
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reclamation (1)
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reefs (7)
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remote sensing (3)
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reservoirs (1)
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roads (1)
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rock mechanics (1)
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sea water (62)
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sea-floor spreading (2)
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sea-level changes (20)
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sedimentary petrology (28)
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sedimentary rocks
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bauxite (1)
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carbonate rocks
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beachrock (1)
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chalk (7)
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dolostone (9)
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grainstone (2)
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limestone
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dolomitic limestone (1)
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micrite (5)
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microbialite (1)
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packstone (2)
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wackestone (2)
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-
chemically precipitated rocks
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duricrust (1)
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evaporites (19)
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iron formations
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banded iron formations (1)
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-
phosphate rocks (5)
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tufa (2)
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weathering crust (1)
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-
clastic rocks
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arkose (1)
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bentonite (26)
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black shale (5)
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claystone (3)
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conglomerate (4)
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marl (3)
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mudstone (8)
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red beds (2)
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sandstone (26)
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shale (14)
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siltstone (6)
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coal
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bituminous coal (1)
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lignite (3)
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subbituminous coal (1)
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oil sands (5)
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oil shale (2)
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-
sedimentary structures
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biogenic structures
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algal structures
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algal mats (2)
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bioturbation (3)
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stromatolites (4)
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planar bedding structures
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bedding (1)
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cyclothems (1)
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laminations (1)
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1-20 OF 878 RESULTS FOR
calcium
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Journal Article
Diagenetic impacts on Ca isotopes and Mg/Ca ratios of Globigerinoides ruber shells in the eastern Mediterranean Open Access
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 15 January 2025
Journal of the Geological Society (2025) 182 (2): jgs2024-019.
... ocean circulation and chemical inventories . Earth and Planetary Science Letters , 76 , 135 – 150 , doi: 10.1016/0012-821X(85)90154-2 10.1016/0012-821X(85)90154-2 Bradbury , H.J. and Turchyn , A.V. 2018 . Calcium isotope fractionation in sedimentary pore fluids from ODP Leg 175...
Journal Article
INTRATEST TRACE ELEMENT VARIABILITY IN POLAR AND SUBPOLAR PLANKTIC FORAMINIFERA: INSIGHTS INTO VITAL EFFECTS, ONTOGENY, AND BIOMINERALIZATION PROCESSES Open Access
Journal: Journal of Foraminiferal Research
Published: 22 October 2024
Journal of Foraminiferal Research (2024) 54 (4): 355–374.
...: 10.5194/bg-10-6375-2013 . Zhou, X.,
Rosenthal, Y.,
Haynes, L.,
Si, W.,
Evans, D.,
Huang, K.-F.,
Hönisch, B., and Erez, J. 2021 , Planktic foraminiferal Na/Ca: A potential proxy for seawater calcium concentration : Geochimica et Cosmochimica Acta...
Includes: Supplemental Content
Journal Article
Effects of electrokinetic stabilization combined with addition of calcium ions on soil shear strength characteristics in the hilly granitic region of southern China Available to Purchase
Publisher: Geological Society of London
Published: 27 September 2024
Quarterly Journal of Engineering Geology and Hydrogeology (2024) 57 (4): qjegh2023-090.
... investigated the effects of adding calcium chloride (CaCl 2 ) and using EKS techniques on the soil shear characteristics (shear strength and its two components: cohesion and internal friction angle) of three different soil layers in collapsing gullies. The results showed that the EKS techniques significantly...
Journal Article
Influence of wet–dry cycles on the disintegration characteristics of Cretaceous siltstone, China Available to Purchase
Publisher: Geological Society of London
Published: 25 September 2024
Quarterly Journal of Engineering Geology and Hydrogeology (2024) 57 (4): qjegh2024-029.
Journal Article
K isotopic fractionation in K-feldspar: Effects of mineral chemistry Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 September 2024
American Mineralogist (2024) 109 (9): 1523–1534.
Includes: Supplemental Content
Journal Article
Re−Os Isotope and PGE Abundance Systematics of Coast Range Ophiolite Peridotites and Chromitite, California: Insights into Fore-Arc Magmatic Processes Open Access
Journal: Lithosphere
Publisher: GSW
Published: 10 July 2024
Lithosphere (2024) 2024 (3): lithosphere_2024_154.
Includes: Supplemental Content
Journal Article
Early Mississippian global δ 13 C excursion is not a diagenetic artifact Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 23 May 2024
Geology (2024) 52 (9): 641–645.
... the global carbon cycle. Recent studies of calcium isotopes (δ 44/40 Ca) in shallow-water carbonates indicate that δ 44/40 Ca can be altered during early marine diagenesis, implying that δ 13 C may also potentially be altered. Here, we tested the hypothesis that the platform carbonate δ 13 C record...
Journal Article
The Origin and Evolution of Rare Earth Element Mineralization in the Muluozhai Deposit (Sichuan, China): Insights from Mineralogical, Trace Element, and Sr-Nd-Pb-C-O-Ca Isotope Data Open Access
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 2024
Economic Geology (2024) 119 (3): 681–712.
... ( Anenburg et al., 2020a , 2022 ; Yuan et al., 2023 ). Some carbonatites, however, exhibit initial magmatic deposition of REE phases ( Wall and Mariano, 1996 ; Zaitsev et al., 2002 ; Weng et al., 2021 ; Zheng et al., 2023 ) or REE sequestration by calcium minerals (e.g., apatite; Bühn, 2001...
Journal Article
Modelling sulfate concentrations in the global ocean through Phanerozoic time Open Access
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 29 April 2024
Journal of the Geological Society (2024) 181 (4): jgs2023-184.
...Alexander J. Krause; Graham A. Shields; Robert J. Newton; Benjamin J. W. Mills Abstract Understanding the long-term variations in seawater sulfate concentrations ([SO 4 2− ] sw ) is crucial to our understanding of the dynamic relationships between the sulfur, carbon, calcium and oxygen cycles...
Journal Article
Sightings of the Rare Globorotalia Cavernula in the Subantarctic South of Africa: Biogeochemical and Ecological Insights Open Access
Sandi M. Smart, Ralf Schiebel, Klaus P. Jochum, Sonia Chaabane, Anna Jentzen, Janne Repschläger, Brigitte Stoll, Ulrike Weis, Gerald H. Haug
Journal: Journal of Foraminiferal Research
Published: 15 April 2024
Journal of Foraminiferal Research (2024) 54 (2): 81–94.
... portion of each ablation profile was selected in order to exclude any surface contamination and artifacts of beam penetration (Fig. A1). International reference materials from the USGS (MACS-3 synthetic calcium carbonate) and NIST (SRM 610 and 612 silicate glasses), were used for calibration and quality...
Includes: Supplemental Content
Journal Article
Fracture smectites in bedrock at the Kivetty and Romuvaara sites, Finland, as natural analogues for radioactive waste repository buffers Open Access
Journal: Geoenergy
Publisher: Geological Society of London
Published: 10 April 2024
Geoenergy (2024) 2 (1): geoenergy2023-053.
..., the resulting high potassium level actively promotes the illitization of feldspars ( Alekseyev et al. 1997 ; Zhu and Lu 2009 ). With the accumulation of calcium (or magnesium or sodium) in the system, swelling clays such as montmorillonite can be formed. In addition to weathering, hydrothermal alteration...
Journal Article
Natural and pretreated Gördes clinoptilolites for ammonia removal: effect of exchangeable cations (Na + , K + , Ca 2+ and Mg 2+ ) Available to Purchase
Journal: Clay Minerals
Published: 26 February 2024
Clay Minerals (2024) 59 (1): 39–49.
...) are listed in Table 1 . Raw CLN is rich in potassium and calcium and has a SiO 2 /Al 2 O 3 ratio of 5.7. Compared to the raw material, the parent sample prepared using Method 2 showed significant changes in its chemical composition and significant removal of exchangeable cations from the structure without...
Journal Article
Morphotypical and Geochemical Variations of Planktic Foraminiferal Species in Siberian and Central Arctic Ocean Core Tops Open Access
Maya Prabhakar, Kaustubh Thirumalai, Thomas M. Cronin, Laura Gemery, Elizabeth K. Thomas, Patrick A. Rafter
Journal: Journal of Foraminiferal Research
Published: 13 February 2024
Journal of Foraminiferal Research (2024) 54 (1): 1–19.
... seawater , and iteratively solves for the latter two variables and their respective uncertainties in a Monte Carlo framework ( Thirumalai et al., 2016 ). We reconstruct seawater temperatures using the following published calibration equations, where Mg/Ca is the magnesium to calcium ratio in measured...
Includes: Supplemental Content
Journal Article
Crystal structure of calcium-ferrite type NaAlSiO 4 up to 45 GPa Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 2023
American Mineralogist (2023) 108 (12): 2331–2337.
...Fei Qin; Ye Wu; Shengchao Xue; Dongzhou Zhang; Xiang Wu; Steven D. Jacobsen Abstract Alkali-rich aluminous high-pressure phases including calcium-ferrite (CF) type NaAlSiO 4 are thought to constitute ~20% by volume of subducted mid-ocean ridge basalt (MORB) under lower mantle conditions...
Includes: Supplemental Content
Journal Article
Warming, acidification, and calcification feedback during the first hyperthermal of the Cenozoic—The Latest Danian Event Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 07 November 2023
Geology (2024) 52 (1): 51–55.
... to the residence times of boron (~10 m.y.) and calcium (~1 m.y.) within the ocean ( Broecker and Peng, 1982 ; Lemarchand et al., 2000 ), decreases in the [B(OH) 4 – ]/DIC ratio suggest a decrease in seawater borate concentrations due to a decrease in pH (which decreases the abundance of [B(OH) 4 – ] relative...
Journal Article
The Franklin Large Igneous Province and Snowball Earth Initiation Open Access
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 October 2023
Elements (2023) 19 (5): 296–301.
Journal Article
Paleoclimatic Influence on the Evolution of the Late Quaternary Clastic Sediments, Northwestern Arabian Sea Available to Purchase
Publisher: Geological Society of India
Published: 01 October 2023
Jour. Geol. Soc. India (2023) 99 (10): 1349–1360.
... during the interglacial stages, Holocene and interstadial events. The increased total carbonate, elemental concentrations (calcium, barium and phosphorous) and decreased magnetic susceptibility values correlate with the enhanced monsoon intensities during the above events. Glacial stages and millennial...
Journal Article
Calcite-aragonite seas as a driver of echinoderm evolution? Experimental insight and deep-time decoupling Open Access
Journal: Geology
Publisher: Geological Society of America
Published: 12 September 2023
Geology (2023) 51 (12): 1091–1095.
...Selina R. Cole; David F. Wright; Jeffrey R. Thompson Abstract Seawater magnesium (Mg) and calcium (Ca) have undergone secular fluctuations throughout the Phanerozoic, controlling whether the dominant calcium carbonate precipitant is calcite or aragonite + high-Mg calcite. Although...
Journal Article
Theoretical analysis of the effect of doping with Na(I), K(I), Mg(II), Ca(II) and Fe(II) on the electronic and mechanical properties of pyrophyllite Available to Purchase
Journal: Clay Minerals
Published: 02 August 2023
Clay Minerals (2023) 58 (2): 113–120.
Journal Article
Phase Transformations in Feldspar Group Minerals with Paracelsian Topology under High Temperature and High Pressure Open Access
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 August 2023
Russ. Geol. Geophys. (2023) 64 (8): 950–961.
... ). A calcium mineral, danburite, seems to be the most stable among other borosilicates and decomposes only at ~1000 °C with the formation of crystobalite and wollastonite, as well as gaseous B 2 O 3 ( Brun and Ghose, 1964 ). Data on the high-temperature behavior of the strontium analogue of paracelsian, i.e...
Includes: Supplemental Content
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