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Navesink Formation (1)
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Pierre Shale (2)
-
Raritan Formation (1)
-
Senonian (6)
-
Teapot Sandstone Member (1)
-
Turonian (1)
-
Tuscaloosa Formation (1)
-
-
Viking Formation (1)
-
-
Jurassic
-
Lower Jurassic
-
upper Liassic (1)
-
-
Middle Jurassic
-
Bajocian
-
Brent Group (1)
-
Ness Formation (1)
-
-
Bathonian (1)
-
Callovian (2)
-
Dogger (1)
-
-
Opalinus Clay (3)
-
Oxford Clay (3)
-
Upper Jurassic
-
Cotton Valley Group (1)
-
Entrada Sandstone (1)
-
Haynesville Formation (2)
-
Kimmeridge Clay (5)
-
Kimmeridgian (3)
-
Oxfordian (5)
-
Stump Formation (1)
-
-
-
Moenave Formation (1)
-
Nugget Sandstone (2)
-
Triassic
-
Lower Triassic
-
Dinwoody Formation (1)
-
Panchet Series (1)
-
Permian-Triassic boundary (1)
-
-
Middle Triassic
-
Ladinian (1)
-
-
Upper Triassic
-
Mercia Mudstone (2)
-
Rhaetian (1)
-
Yanchang Formation (1)
-
-
-
-
MIS 5 (1)
-
Paleozoic
-
Berea Sandstone (2)
-
Cambrian
-
Lower Cambrian (2)
-
Upper Cambrian
-
Wilberns Formation (1)
-
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (1)
-
-
Mississippian
-
Barnett Shale (2)
-
Madison Group (2)
-
Middle Mississippian
-
Visean (1)
-
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Morrowan (1)
-
-
Middle Pennsylvanian
-
Desmoinesian
-
Cherokee Group (1)
-
-
-
Morrow Formation (1)
-
Pottsville Group (2)
-
-
-
Devonian
-
Middle Devonian
-
Marcellus Shale (1)
-
-
Old Red Sandstone (2)
-
Upper Devonian
-
Frasnian (1)
-
-
-
lower Paleozoic (2)
-
Ordovician
-
Middle Ordovician
-
Bromide Formation (1)
-
-
Upper Ordovician
-
Bighorn Dolomite (1)
-
Caradocian
-
Borrowdale Volcanic Group (1)
-
-
-
-
Permian
-
Gharif Formation (1)
-
Lower Permian
-
Cisuralian (1)
-
Leonardian (1)
-
-
Phosphoria Formation (1)
-
Upper Permian
-
Permian-Triassic boundary (1)
-
-
-
Silurian
-
Lower Silurian
-
Grimsby Sandstone (1)
-
Wenlock (1)
-
-
Middle Silurian
-
Clinton Group (1)
-
-
Upper Silurian
-
Ludlow (1)
-
-
-
Woodford Shale (1)
-
-
Precambrian
-
Adirondack Anorthosite (1)
-
Archean
-
Neoarchean (1)
-
-
upper Precambrian
-
Proterozoic
-
Lewisian (1)
-
Malmani Subgroup (1)
-
Neoproterozoic
-
Ediacaran (1)
-
Torridonian (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
anorthosite (1)
-
diabase (2)
-
granites
-
aplite (1)
-
-
ultramafics (1)
-
-
volcanic rocks
-
andesites (2)
-
basalts
-
tholeiite (1)
-
trap rocks (1)
-
-
glasses
-
palagonite (1)
-
volcanic glass (1)
-
-
nephelinite (1)
-
pyroclastics
-
hyaloclastite (1)
-
ignimbrite (3)
-
tuff (5)
-
-
rhyolites (1)
-
-
-
ophiolite (3)
-
volcanic ash (2)
-
-
metamorphic rocks
-
metamorphic rocks
-
cataclasites (1)
-
gneisses (1)
-
metaigneous rocks
-
serpentinite (2)
-
-
metasedimentary rocks (1)
-
metasomatic rocks
-
serpentinite (2)
-
-
phyllites (1)
-
schists
-
greenstone (1)
-
-
slates (2)
-
-
ophiolite (3)
-
turbidite (11)
-
-
minerals
-
alloys
-
carbides (1)
-
-
carbonates
-
ankerite (1)
-
aragonite (4)
-
bastnaesite (1)
-
calcite (23)
-
dolomite (7)
-
magnesian calcite (1)
-
rhodochrosite (1)
-
siderite (3)
-
thaumasite (1)
-
witherite (1)
-
-
chromates (2)
-
halides
-
chlorides
-
halite (1)
-
-
fluorides
-
bastnaesite (1)
-
-
-
iron minerals (1)
-
minerals (44)
-
oxalates (2)
-
oxides
-
aluminum oxides (2)
-
birnessite (1)
-
boehmite (1)
-
chromite (1)
-
diaspore (3)
-
ferrihydrite (1)
-
gibbsite (4)
-
goethite (9)
-
hematite (8)
-
hydroxides
-
aluminum hydroxides (1)
-
iron hydroxides (2)
-
-
ilmenite (1)
-
iron oxides (11)
-
lepidocrocite (2)
-
limonite (2)
-
maghemite (1)
-
magnetite (5)
-
manganese oxides (2)
-
rancieite (1)
-
rutile (1)
-
titanium oxides (1)
-
todorokite (1)
-
uraninite (1)
-
vernadite (1)
-
-
phosphates
-
crandallite (1)
-
goyazite (1)
-
monazite (1)
-
-
silicates
-
aluminosilicates (4)
-
chain silicates
-
amphibole group
-
clinoamphibole
-
hornblende (1)
-
-
-
pyroxene group
-
clinopyroxene (1)
-
-
wollastonite group
-
wollastonite (2)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (4)
-
-
plagioclase
-
andesine (1)
-
anorthite (1)
-
-
-
silica minerals
-
cristobalite (2)
-
opal
-
opal-A (2)
-
opal-CT (1)
-
-
quartz (38)
-
-
zeolite group
-
analcime (1)
-
-
-
orthosilicates
-
nesosilicates
-
larnite (1)
-
mullite (2)
-
thaumasite (1)
-
titanite group
-
titanite (1)
-
-
zircon group
-
zircon (3)
-
-
-
sorosilicates
-
epidote group
-
epidote (1)
-
-
melilite group
-
gehlenite (2)
-
melilite (1)
-
-
-
-
ring silicates
-
tourmaline group
-
schorl (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (34)
-
-
clay minerals
-
allophane (4)
-
beidellite (6)
-
dickite (5)
-
halloysite (12)
-
hectorite (2)
-
imogolite (2)
-
kaolinite (90)
-
montmorillonite (50)
-
nacrite (1)
-
nontronite (4)
-
saponite (5)
-
smectite (109)
-
stevensite (2)
-
vermiculite (12)
-
-
corrensite (1)
-
illite (100)
-
mica group
-
biotite (1)
-
glauconite (17)
-
muscovite (5)
-
-
palygorskite (13)
-
pyrophyllite (4)
-
sepiolite (4)
-
serpentine group
-
berthierine (3)
-
chrysotile (1)
-
serpentine (2)
-
-
stilpnomelane (1)
-
talc (6)
-
-
-
sulfates
-
alunite (1)
-
anhydrite (4)
-
barite (3)
-
gypsum (11)
-
jarosite (1)
-
selenite (1)
-
thaumasite (1)
-
-
sulfides
-
galena (1)
-
iron sulfides (2)
-
pyrite (11)
-
-
-
Primary terms
-
absolute age (37)
-
Africa
-
Central Africa
-
Angola (1)
-
Gabon
-
Oklo (1)
-
-
-
East Africa
-
Ethiopia (2)
-
Kenya (3)
-
Tanzania
-
Laetoli (1)
-
-
-
Kalahari Desert (1)
-
Nile River (1)
-
Nile Valley (1)
-
North Africa
-
Algeria (3)
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
High Atlas (1)
-
Middle Atlas (1)
-
-
-
Egypt
-
Bahariya Oasis (1)
-
Dakhla Oasis (1)
-
Kharga Oasis (1)
-
Nile Delta (1)
-
-
Illizi Basin (1)
-
Morocco
-
Casablanca Morocco (1)
-
-
-
-
-