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Cenozoic
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Paleogene
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Oligocene
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Paleocene (5)
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Shahejie Formation (2)
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upper Cenozoic (1)
-
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Mesozoic
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Cretaceous
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Graneros Shale (1)
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Lower Cretaceous
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Albian (2)
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Upper Cretaceous
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Gulfian
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Hilliard Shale (1)
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Judith River Formation (1)
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Williams Fork Formation (2)
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Viking Formation (1)
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Great Valley Sequence (1)
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Jurassic
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Arapien Shale (1)
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Lower Jurassic
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Middle Jurassic
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Upper Jurassic
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Arab Formation (1)
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Mist Mountain Formation (1)
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Triassic
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Lower Triassic
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Middle Triassic
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Doig Formation (2)
-
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Moenkopi Formation (1)
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Nicola Group (1)
-
Shublik Formation (1)
-
Upper Triassic
-
Baldonnel Formation (1)
-
Pardonet Formation (1)
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Sag River Sandstone (1)
-
Stuhini Group (3)
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Yanchang Formation (3)
-
-
-
upper Mesozoic (2)
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Yanshanian (1)
-
-
Paleozoic
-
Cambrian
-
Lower Cambrian (6)
-
-
Carboniferous
-
Benxi Formation (2)
-
Huanglong Formation (1)
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Lower Carboniferous
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Dinantian (1)
-
-
Mississippian
-
Barnett Shale (4)
-
Lower Mississippian
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Lodgepole Formation (1)
-
Osagian
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Burlington Limestone (1)
-
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Tournaisian (1)
-
-
Middle Mississippian
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Visean (2)
-
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Sunbury Shale (1)
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Upper Mississippian
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Chesterian (1)
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Hartselle Sandstone (1)
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Meramecian
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Saint Louis Limestone (1)
-
Sainte Genevieve Limestone (1)
-
Salem Limestone (1)
-
-
-
-
Pennsylvanian
-
Hermosa Group (1)
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Lower Pennsylvanian
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New River Formation (1)
-
-
Middle Pennsylvanian
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Allegheny Group (1)
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Atokan
-
Atoka Formation (1)
-
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Paradox Formation (3)
-
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Morrow Formation (1)
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Upper Pennsylvanian (1)
-
-
Upper Carboniferous
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Stephanian (1)
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-
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Devonian
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Beaverhill Lake Group (1)
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Keg River Formation (1)
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Lower Devonian
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Oriskany Sandstone (1)
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-
Middle Devonian
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Hamilton Group (1)
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Marcellus Shale (2)
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Nahanni Formation (1)
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Onondaga Limestone (1)
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Prairie Evaporite (1)
-
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Old Red Sandstone (1)
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-
Thirtyone Formation (1)
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Upper Devonian
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Domanik Formation (1)
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Frasnian
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Leduc Formation (1)
-
-
Grosmont Formation (2)
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Ohio Shale (2)
-
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Waterways Formation (1)
-
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Hunton Group (1)
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lower Paleozoic (3)
-
New Albany Shale (1)
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Ordovician
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Lower Ordovician
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-
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Middle Ordovician
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-
Upper Ordovician
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Katian (1)
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Wufeng Formation (3)
-
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Viola Limestone (1)
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-
Permian
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Cutler Formation (1)
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Guadalupian
-
Brushy Canyon Formation (1)
-
-
Kaibab Formation (1)
-
Khuff Formation (1)
-
Longtan Formation (1)
-
Lower Permian
-
Cisuralian
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Kungurian (1)
-
-
-
Maokou Formation (1)
-
Meade Peak Member (1)
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Middle Permian (1)
-
Park City Formation (1)
-
Phosphoria Formation (1)
-
Retort Phosphatic Shale Member (1)
-
Rotliegendes (1)
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Upper Permian
-
Changxing Formation (1)
-
Zechstein (1)
-
-
-
Silurian
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Lower Silurian
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Llandovery
-
Rhuddanian (1)
-
-
Tuscarora Formation (1)
-
-
Middle Silurian
-
Clinton Group (1)
-
-
Niagaran (4)
-
Upper Silurian
-
Ludlow
-
Ludfordian (1)
-
-
-
-
Taiyuan Formation (2)
-
upper Paleozoic
-
Antrim Shale (1)
-
Bakken Formation (4)
-
Shanxi Formation (2)
-
-
Woodford Shale (1)
-
-
Phanerozoic (8)
-
Precambrian
-
Archean
-
Blake River Group (2)
-
Mesoarchean (1)
-
Neoarchean
-
Jiaodong Group (1)
-
-
-
Chuar Group (1)
-
Nipissing Diabase (1)
-
Nonesuch Shale (1)
-
Sokoman Formation (1)
-
upper Precambrian
-
Proterozoic
-
Athabasca Formation (2)
-
Cahill Formation (1)
-
Huronian
-
Gowganda Formation (1)
-
-
Mesoproterozoic
-
Helikian (1)
-
-
Neoproterozoic
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
Infracambrian (1)
-
Otavi Group (1)
-
Riphean (4)
-
Vendian (7)
-
-
Paleoproterozoic
-
Aphebian (2)
-
Birimian (4)
-
-
Sinian
-
Dengying Formation (1)
-
Doushantuo Formation (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (5)
-
hypabyssal rocks (1)
-
kimberlite (1)
-
plutonic rocks
-
anorthosite (1)
-
diorites
-
quartz diorites (3)
-
tonalite (3)
-
-
gabbros (1)
-
granites
-
aplite (2)
-
A-type granites (1)
-
felsite (1)
-
monzogranite (1)
-
-
granodiorites (3)
-
monzodiorite (2)
-
monzonites (4)
-
pegmatite (3)
-
syenites (2)
-
ultramafics
-
chromitite (2)
-
peridotites
-
dunite (4)
-
harzburgite (3)
-
-
pyroxenite
-
orthopyroxenite (1)
-
-
-
urtite (1)
-
-
porphyry (5)
-
volcanic rocks
-
andesites (7)
-
basalts
-
flood basalts (2)
-
mid-ocean ridge basalts (1)
-
-
dacites (2)
-
glasses (1)
-
komatiite (2)
-
pyroclastics
-
ignimbrite (1)
-
tuff (5)
-
-
rhyodacites (2)
-
rhyolites (6)
-
trachyandesites (1)
-
-
-
ophiolite (2)
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (3)
-
gneisses
-
orthogneiss (1)
-
paragneiss (2)
-
-
hornfels (1)
-
marbles (3)
-
metaigneous rocks
-
metaperidotite (1)
-
metapyroxenite (1)
-
-
metasedimentary rocks
-
paragneiss (2)
-
-
metasomatic rocks
-
greisen (2)
-
rodingite (1)
-
skarn (19)
-
-
metavolcanic rocks (1)
-
phyllites (2)
-
quartzites (1)
-
schists
-
greenschist (1)
-
-
slates (2)
-
-
ophiolite (2)
-
turbidite (4)
-
-
meteorites
-
meteorites (1)
-
-
minerals
-
alloys
-
awaruite (1)
-
electrum (1)
-
-
arsenides
-
arsenopyrite (1)
-
cobaltite (1)
-
-
carbonates
-
calcite (2)
-
dolomite (3)
-
-
halides
-
chlorides
-
halite (1)
-
-
fluorides
-
fluorite (2)
-
topaz (1)
-
-
-
hydrates (2)
-
minerals (5)
-
oxides
-
baddeleyite (1)
-
cassiterite (1)
-
chromite (1)
-
corundum (1)
-
goethite (1)
-
hematite (2)
-
ilmenite (1)
-
iron oxides (4)
-
magnetite (6)
-
martite (1)
-
pitchblende (1)
-
rutile (1)
-
uraninite (2)
-
-
phosphates
-
apatite (5)
-
francolite (1)
-
monazite (2)
-
xenotime (2)
-
-
platinum minerals (1)
-
silicates
-
aluminosilicates (1)
-
chain silicates
-
amphibole group
-
clinoamphibole
-
cummingtonite (1)
-
hornblende (2)
-
-
orthoamphibole
-
anthophyllite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
hedenbergite (1)
-
-
orthopyroxene (1)
-
-
wollastonite group
-
wollastonite (1)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
adularia (3)
-
-
plagioclase (1)
-
-
nepheline group
-
nepheline (1)
-
-
silica minerals
-
chalcedony (1)
-
quartz (8)
-
-
-
orthosilicates
-
nesosilicates
-
andalusite (1)
-
garnet group (1)
-
kyanite (1)
-
olivine group
-
olivine (1)
-
-
sillimanite (2)
-
topaz (1)
-
zircon group
-
zircon (21)
-
-
-
sorosilicates
-
epidote group
-
epidote (2)
-
-
-
-
ring silicates
-
cordierite (1)
-
tourmaline group (1)
-
-
sheet silicates
-
chlorite group
-
chlorite (3)
-
clinochlore (2)
-
-
clay minerals
-
dickite (1)
-
halloysite (1)
-
kaolinite (3)
-
nacrite (1)
-
smectite (2)
-
-
illite (4)
-
mica group
-
biotite (6)
-
muscovite (4)
-
-
pyrophyllite (1)
-
sericite (1)
-
serpentine group
-
antigorite (1)
-
lizardite (1)
-
-
-
-
sulfates
-
alunite (5)
-
anhydrite (2)
-
barite (1)
-
celestine (1)
-
gypsum (1)
-
-
sulfides
-
aikinite (1)
-
arsenopyrite (1)
-
bismuthinite (1)
-
bornite (1)
-
chalcocite (1)
-
chalcopyrite (3)
-
cobaltite (1)
-
galena (4)
-
molybdenite (6)
-
nickel sulfides (1)
-
pentlandite (1)
-
pyrite (13)
-
pyrrhotite (1)
-
sphalerite (4)
-
tetradymite (1)
-
-
sulfosalts
-
sulfantimonites
-
freibergite (1)
-
pyrargyrite (1)
-
tetrahedrite (1)
-
-
sulfarsenites
-
pearceite (1)
-
proustite (1)
-
tennantite (1)
-
-
sulfobismuthites
-
berryite (1)
-
-
-
tellurides
-
tetradymite (1)
-
-
tungstates
-
scheelite (2)
-
-
vanadates (1)
-
-
Primary terms
-
absolute age (47)
-
academic institutions (2)
-
Africa
-
Central Africa
-
Angola
-
Cuanza Basin (1)
-
-
Congo (1)
-
Congo Democratic Republic (3)
-
Gabon (2)
-
-
Chad Basin (1)
-
East Africa
-
Afar Depression (1)
-
Ethiopia (2)
-
Sudan (6)
-
Tanzania (3)
-
Uganda (1)
-
-
East African Rift (1)
-
Mozambique Belt (1)
-
North Africa
-
Algeria (6)
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
-
Egypt
-
Aswan Egypt
-
Kom Ombo Egypt (1)
-
-
Bahariya Oasis (1)
-
Eastern Desert (2)
-
Nile Delta (1)
-
-
Libya
-
Murzuk Basin (1)
-
Sirte Basin (1)
-
-
Morocco
-
Moroccan Atlas Mountains
-
Middle Atlas (1)
-
-
-
Tunisia (8)
-
-
Nubian Shield (3)
-
Red Sea Hills (1)
-
Southern Africa
-
Botswana (1)
-
Namibia
-
Otavi Namibia (1)
-
-
South Africa
-
Bushveld Complex (1)
-
Transvaal region (1)
-
Witwatersrand (2)
-
-
-
West Africa
-
Adamawa (1)
-
Benue Valley (2)
-
Burkina Faso (1)
-
Cameroon (1)
-
Ghana (2)
-
Guinea (1)
-
Ivory Coast (1)
-
Liberia (1)
-
Mali (1)
-
Niger (1)
-
Nigeria
-
Jos Plateau (1)
-
Niger Delta (1)
-
-
Senegal (1)
-
Sierra Leone (1)
-
-
-
Antarctica (2)
-
Arctic Ocean
-
Barents Sea
-
Pechora Sea (1)
-
-
Beaufort Sea (4)
-
Chukchi Sea (2)
-
East Siberian Sea (1)
-
Kara Sea (2)
-
Laptev Sea (3)
-
-
Arctic region
-
Russian Arctic (4)
-
-
Asia
-
Arabian Peninsula
-
Arabian Shield (4)
-
Oman (3)
-
Saudi Arabia (5)
-
United Arab Emirates
-
Abu Dhabi (1)
-
-
-
Buryat Russian Federation (1)
-
Central Asia
-
Caspian Depression (1)
-
Kazakhstan
-
Karachaganak Field (2)
-
Tengiz Field (1)
-
-
-
Far East
-
Borneo
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
Kalimantan Indonesia (2)
-
-
China
-
-
-
-