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Tertiary
-
Florissant Lake Beds (2)
-
John Day Formation (1)
-
Neogene
-
Bidahochi Formation (2)
-
Hemphillian (1)
-
Miocene
-
Ash Hollow Formation (1)
-
Clarendonian (1)
-
lower Miocene (1)
-
middle Miocene
-
Langhian (1)
-
-
Puerto Madryn Formation (1)
-
upper Miocene
-
Tortonian (1)
-
-
Valentine Formation (1)
-
-
Ogallala Formation (3)
-
Pliocene
-
lower Pliocene (1)
-
upper Pliocene (1)
-
-
-
Paleogene
-
Eocene
-
lower Eocene
-
Wind River Formation (1)
-
Ypresian (1)
-
-
middle Eocene
-
Aycross Formation (1)
-
Bartonian (1)
-
Lutetian (1)
-
-
upper Eocene
-
Priabonian (1)
-
-
-
Oligocene
-
lower Oligocene
-
Rupelian (1)
-
-
middle Oligocene
-
Bucatunna Formation (1)
-
Byram Formation (1)
-
-
upper Oligocene (1)
-
Vicksburg Group (1)
-
-
Paleocene
-
lower Paleocene
-
Danian (2)
-
K-T boundary (1)
-
-
middle Paleocene
-
Selandian (1)
-
-
Ravenscrag Formation (1)
-
upper Paleocene
-
Thanetian (1)
-
-
-
Paleocene-Eocene Thermal Maximum (2)
-
-
-
-
Coal Measures (1)
-
Mesozoic
-
Bisbee Group (1)
-
Cretaceous
-
Colorado Group (1)
-
Lower Cretaceous
-
Albian (2)
-
Barremian (1)
-
Berriasian (1)
-
Cadomin Formation (1)
-
Muddy Sandstone (1)
-
Neocomian (1)
-
Purbeckian (1)
-
Speeton Clay (1)
-
Valanginian (1)
-
-
Middle Cretaceous (1)
-
Upper Cretaceous
-
Belle Fourche Shale (1)
-
Campanian
-
upper Campanian (1)
-
-
Carlile Shale (1)
-
Cenomanian (2)
-
Colville Group (1)
-
Coniacian (1)
-
Edmonton Group (1)
-
Frontier Formation (1)
-
Hell Creek Formation (1)
-
Horseshoe Canyon Formation (2)
-
Judith River Formation (1)
-
K-T boundary (1)
-
Maestrichtian
-
lower Maestrichtian (1)
-
-
Niobrara Formation (2)
-
Pierre Shale (1)
-
Prince Creek Formation (2)
-
Saint Mary River Formation (1)
-
Santonian (1)
-
Senonian (4)
-
Turonian (1)
-
Two Medicine Formation (3)
-
-
Viking Formation (1)
-
-
Jurassic
-
Aztec Sandstone (1)
-
Ferrar Group (1)
-
Kingak Shale (1)
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (1)
-
Toarcian (1)
-
upper Liassic (1)
-
-
Middle Jurassic
-
Aalenian (1)
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Bajocian (1)
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Bathonian
-
Great Oolite Group (1)
-
-
Callovian (2)
-
Walloon Coal Measures (1)
-
-
Oxford Clay (1)
-
Upper Jurassic
-
Bowser Lake Group (1)
-
Kimmeridge Clay (2)
-
Oxfordian (1)
-
Portlandian (1)
-
Tithonian (1)
-
-
-
Kayenta Formation (1)
-
Mist Mountain Formation (1)
-
Pucara Group (1)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (5)
-
-
Moenkopi Formation (2)
-
Upper Triassic
-
Chinle Formation (2)
-
Rhaetian
-
Penarth Group (1)
-
-
Yanchang Formation (1)
-
-
-
-
Paleozoic
-
Cambrian
-
Lower Cambrian (1)
-
Middle Cambrian
-
Bright Angel Shale (1)
-
-
Tapeats Sandstone (1)
-
-
Carboniferous
-
Lower Carboniferous
-
Asbian (1)
-
-
Mississippian
-
Middle Mississippian
-
Visean (1)
-
-
Rampart Group (1)
-
Redwall Limestone (1)
-
Upper Mississippian
-
Serpukhovian (1)
-
-
-
Namurian (1)
-
Pennsylvanian
-
Middle Pennsylvanian
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Moscovian (2)
-
-
-
Upper Carboniferous
-
Millstone Grit (1)
-
Westphalian (1)
-
-
-
Devonian
-
Middle Devonian
-
Hamilton Group (1)
-
Marcellus Shale (1)
-
-
Old Red Sandstone (1)
-
Upper Devonian
-
Domanik Formation (1)
-
-
-
Ordovician
-
Middle Ordovician
-
Deicke Bentonite Bed (3)
-
Millbrig Bentonite Bed (3)
-
-
Trenton Group (1)
-
Upper Ordovician
-
Caradocian
-
Borrowdale Volcanic Group (1)
-
-
Katian (1)
-
Sandbian (1)
-
Trentonian (1)
-
-
Womble Shale (1)
-
-
Permian
-
Ecca Group (2)
-
Guadalupian
-
Capitanian (1)
-
-
McCloud Limestone (1)
-
Toroweap Formation (1)
-
Upper Permian
-
Permian-Triassic boundary (5)
-
-
-
Silurian
-
Lower Silurian
-
Llandovery (1)
-
Wenlock (2)
-
-
Upper Silurian
-
Ludlow
-
Ludfordian (1)
-
-
Pridoli (2)
-
-
-
Taiyuan Formation (1)
-
upper Paleozoic
-
Dwyka Formation (1)
-
-
-
Precambrian
-
Archean
-
Blake River Group (2)
-
Mesoarchean (1)
-
Neoarchean (2)
-
-
Pongola Supergroup (1)
-
Uinta Mountain Group (1)
-
upper Precambrian
-
Proterozoic
-
Great Oxidation Event (1)
-
Neoproterozoic
-
Cryogenian (1)
-
Ediacaran (5)
-
Sturtian (1)
-
Torridonian (1)
-
Vendian (6)
-
-
Paleoproterozoic (2)
-
Umberatana Group (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (1)
-
plutonic rocks
-
gabbros (1)
-
granites (3)
-
-
volcanic rocks
-
andesites
-
boninite (1)
-
-
basalts
-
columnar basalt (1)
-
flood basalts (1)
-
ocean-island basalts (1)
-
tholeiite (1)
-
tholeiitic basalt (1)
-
-
basanite (1)
-
dacites (2)
-
glasses
-
obsidian (1)
-
volcanic glass (4)
-
-
nephelinite (1)
-
pyroclastics
-
hyaloclastite (2)
-
ignimbrite (5)
-
pumice (4)
-
scoria (3)
-
tuff (13)
-
-
rhyolites (5)
-
tephrite (1)
-
-
-
ophiolite (2)
-
volcanic ash (14)
-
-
metamorphic rocks
-
K-bentonite (6)
-
metamorphic rocks
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eclogite (1)
-
impactites
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impact breccia
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suevite (1)
-
-
-
metasedimentary rocks (5)
-
schists
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blueschist (1)
-
-
-
ophiolite (2)
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turbidite (2)
-
-
minerals
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carbonates
-
calcite (1)
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dolomite (1)
-
-
halides
-
chlorides
-
halite (1)
-
-
-
K-bentonite (6)
-
oxides
-
hematite (2)
-
hollandite (1)
-
magnetite (1)
-
manganese oxides (1)
-
-
phosphates
-
monazite (1)
-
rhabdophane (1)
-
xenotime (2)
-
-
silicates
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (1)
-
-
plagioclase (1)
-
-
silica minerals
-
opal
-
opal-A (1)
-
-
-
zeolite group
-
clinoptilolite (2)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (29)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (2)
-
-
clay minerals
-
halloysite (1)
-
kaolinite (6)
-
smectite (9)
-
vermiculite (1)
-
-
illite (7)
-
mica group
-
biotite (3)
-
glauconite (3)
-
-
palygorskite (1)
-
sepiolite (1)
-
serpentine group
-
berthierine (2)
-
-
-
-
sulfates
-
alunite (1)
-
gypsum (1)
-
-
sulfides
-
pyrrhotite (1)
-
-
-
Primary terms
-
absolute age (41)
-
Africa
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East Africa
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Afar Depression (1)
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Ethiopia (1)
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Ethiopian Rift (1)
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Kenya (2)
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Lake Turkana (1)
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Turkana Basin (3)
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East African Lakes
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Lake Turkana (1)
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East African Rift (2)
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Gregory Rift (1)
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North Africa
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Egypt (1)
-
-
Southern Africa
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Barberton greenstone belt (1)
-
Kaapvaal Craton (1)
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Karoo Basin (7)
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Namibia (1)
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South Africa
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Cape fold belt (1)
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Cape Province region (1)
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Eastern Cape Province South Africa (3)
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Free State South Africa (1)
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KwaZulu-Natal South Africa (1)
-
-
-
West Africa
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Nigeria (1)
-
-
Zimbabwe Craton (1)
-
-
Antarctica
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Antarctic ice sheet
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East Antarctic ice sheet (1)
-
-
Antarctic Peninsula
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Graham Land (1)
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East Antarctica (1)
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Transantarctic Mountains
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Pensacola Mountains (1)
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-
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Asia
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Central Asia
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Aral region (1)
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Kazakhstan (1)
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Turgay Basin (1)
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-
Far East
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China
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Datong China (1)
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Guizhou China (2)
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Hainan China (1)
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Hebei China (1)
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Hubei China (1)
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Ordos Basin (1)
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Shandong China (1)
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Shanxi China (1)
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Sichuan China (1)
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South China Block (1)
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Indonesia
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Sumatra
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Toba Lake (1)
-
-
-
-
Indian Peninsula
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India
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Bengal Islands
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Andaman Islands (1)
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Deccan Plateau (1)
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Ghats
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Maharashtra India (1)
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Pakistan
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Baluchistan Pakistan (1)
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-
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Krasnoyarsk Russian Federation (1)
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Kurgan Russian Federation (1)
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Middle East
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Iran (1)
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Turkey
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Anatolia (1)
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Omsk Russian Federation (1)
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Siberia (1)
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Siberian Platform
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Yenisei Ridge (1)
-
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Turan (1)
-
West Siberia (2)
-
Yenisei Basin (1)
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
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North Atlantic
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Gulf of Mexico (1)
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North Sea
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Ekofisk Field (1)
-
-
-
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Atlantic Ocean Islands
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Canary Islands
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Tenerife (2)
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atmosphere (1)
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Australasia
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Australia
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New South Wales Australia (2)
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Surat Basin (1)
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Western Australia
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Hamersley Range (1)
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Pilbara Craton (1)
-
-
-
Papua New Guinea
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Bismarck Archipelago (1)
-
-
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bentonite deposits (1)
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bitumens (1)
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boron (1)
-
Canada
-
Eastern Canada
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Newfoundland and Labrador
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Newfoundland
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Avalon Peninsula (2)
-
-
-
Quebec (2)
-
-
Western Canada
-
Alberta
-
Dinosaur Provincial Park (1)
-
Drumheller Alberta (1)
-
Red Deer River valley (3)
-
-
British Columbia
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Bowser Basin (1)
-
-
Canadian Cordillera (1)
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Manitoba (1)
-
Saskatchewan (3)
-
-
-
carbon
-
C-13/C-12 (4)
-
C-14 (2)
-
organic carbon (1)
-
-
Caribbean region
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West Indies
-
Antilles
-
Lesser Antilles
-
Montserrat Island
-
Soufriere Hills (1)
-
-
Saint Kitts (1)
-
-
-
-
-
Cenozoic
-
Blancan (1)
-
Quaternary
-
Holocene
-
lower Holocene (2)
-
upper Holocene
-
Roman period (1)
-
-
-
Pleistocene
-
Irvingtonian (1)
-
Lake Missoula (1)
-
lower Pleistocene (1)
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Younger Dryas (1)
-
-
-
Wisconsinan
-
upper Wisconsinan (1)
-
-
-
-
upper Quaternary (1)
-
-
Stone Age
-
Paleolithic
-
Acheulian (1)
-
-
-
Tertiary
-
Florissant Lake Beds (2)
-
John Day Formation (1)
-
Neogene
-
Bidahochi Formation (2)
-
Hemphillian (1)
-
Miocene
-
Ash Hollow Formation (1)
-
Clarendonian (1)
-
lower Miocene (1)
-
middle Miocene
-
Langhian (1)
-
-
Puerto Madryn Formation (1)
-
upper Miocene
-
Tortonian (1)
-
-
Valentine Formation (1)
-
-
Ogallala Formation (3)
-
Pliocene
-
lower Pliocene (1)
-
upper Pliocene (1)
-
-
-
Paleogene
-
Eocene
-
lower Eocene
-
Wind River Formation (1)
-
Ypresian (1)
-
-
middle Eocene
-
Aycross Formation (1)
-
Bartonian (1)
-
Lutetian (1)
-
-
upper Eocene
-
Priabonian (1)
-
-
-
Oligocene
-
lower Oligocene
-
Rupelian (1)
-
-
middle Oligocene
-
Bucatunna Formation (1)
-
Byram Formation (1)
-
-
upper Oligocene (1)
-
Vicksburg Group (1)
-
-
Paleocene
-
lower Paleocene
-
Danian (2)
-
K-T boundary (1)
-
-
middle Paleocene
-
Selandian (1)
-
-
Ravenscrag Formation (1)
-
upper Paleocene
-
Thanetian (1)
-
-
-
Paleocene-Eocene Thermal Maximum (2)
-
-
-
-
Central America
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Nicaragua (1)
-
-
Chordata
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Vertebrata
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Pisces (1)
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Tetrapoda
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Aves (2)
-
Mammalia
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Theria
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Eutheria
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Artiodactyla
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Ruminantia
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Tylopoda
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Camelidae (1)
-
-
-
-
Carnivora
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Fissipeda
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Canidae (1)
-
-
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Chiroptera (1)
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Lagomorpha (1)
-
Perissodactyla
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Ceratomorpha
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Rhinocerotidae
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Rhinoceros (2)
-
-
-
Hippomorpha
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Equidae
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Equus (1)
-
-
-
-
Primates
-
Hominidae
-
Homo
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Homo erectus (1)
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Homo habilis (1)
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-
-
simians (2)
-
-
Proboscidea
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Elephantoidea
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Elephantidae
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Mammuthus (1)
-
-
-
-
Rodentia
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Sciuromorpha
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Sciuridae (1)
-
-
-
-
-
-
Reptilia
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Diapsida
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Archosauria
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dinosaurs
-
Ornithischia
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Ornithopoda
-
Hadrosauridae (4)
-
-
-
Saurischia
-
Sauropodomorpha
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Sauropoda (1)
-
-
Theropoda (1)
-
-
-
Pterosauria (1)
-
-
-
Synapsida
-
Therapsida
-
Dicynodontia
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Lystrosaurus (1)
-
-
-
-
-
-
-
-
clay deposits (1)
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clay mineralogy (9)
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climate change (6)
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construction materials
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building stone (1)
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continental drift (2)
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coprolites (2)
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crust (3)
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data processing (2)
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deformation (7)
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earthquakes (2)
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East Pacific Ocean Islands
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Hawaii County Hawaii
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Kauai County Hawaii
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economic geology (1)
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Europe
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Italy
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granites (3)
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volcanic rocks
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andesites
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boninite (1)
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basalts
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columnar basalt (1)
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flood basalts (1)
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ocean-island basalts (1)
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tholeiite (1)
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tholeiitic basalt (1)
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basanite (1)
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dacites (2)
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glasses
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obsidian (1)
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volcanic glass (4)
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nephelinite (1)
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pyroclastics
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hyaloclastite (2)
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ignimbrite (5)
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inclusions
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Invertebrata
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Mollusca
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Cephalopoda (1)
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Gastropoda (1)
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Porifera (1)
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Protista
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Foraminifera
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Fusulinina
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Fusulinidae (1)
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Rotaliina
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Orbitoidacea
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Nephrolepidina (1)
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Radiolaria (2)
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isotopes
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radioactive isotopes
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C-14 (2)
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Th-232/Th-230 (1)
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stable isotopes
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C-13/C-12 (4)
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Nd-144/Nd-143 (2)
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O-18/O-16 (2)
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Sr-87/Sr-86 (6)
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land use (1)
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lava (10)
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magmas (9)
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Mesozoic
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Bisbee Group (1)
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Cretaceous
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Colorado Group (1)
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Lower Cretaceous
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Albian (2)
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Berriasian (1)
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Cadomin Formation (1)
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Muddy Sandstone (1)
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Neocomian (1)
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Speeton Clay (1)
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Valanginian (1)
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Middle Cretaceous (1)
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Upper Cretaceous
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Belle Fourche Shale (1)
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Campanian
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upper Campanian (1)
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Carlile Shale (1)
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Cenomanian (2)
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Colville Group (1)
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Coniacian (1)
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Edmonton Group (1)
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Frontier Formation (1)
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Hell Creek Formation (1)
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Horseshoe Canyon Formation (2)
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Judith River Formation (1)
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K-T boundary (1)
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Maestrichtian
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lower Maestrichtian (1)
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Niobrara Formation (2)
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Pierre Shale (1)
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Prince Creek Formation (2)
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Saint Mary River Formation (1)
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Santonian (1)
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Senonian (4)
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Turonian (1)
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Two Medicine Formation (3)
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Viking Formation (1)
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Jurassic
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Aztec Sandstone (1)
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Ferrar Group (1)
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Kingak Shale (1)
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Lower Jurassic
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Hettangian (1)
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lower Liassic (1)
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Toarcian (1)
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upper Liassic (1)
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Middle Jurassic
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Aalenian (1)
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Bathonian
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Great Oolite Group (1)
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Callovian (2)
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Walloon Coal Measures (1)
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Oxford Clay (1)
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Upper Jurassic
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Bowser Lake Group (1)
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Kimmeridge Clay (2)
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Oxfordian (1)
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Portlandian (1)
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Tithonian (1)
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Kayenta Formation (1)
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Mist Mountain Formation (1)
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Pucara Group (1)
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Triassic
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Lower Triassic
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Permian-Triassic boundary (5)
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Moenkopi Formation (2)
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Upper Triassic
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Chinle Formation (2)
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Rhaetian
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Penarth Group (1)
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Yanchang Formation (1)
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metal ores
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chromite ores (1)
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copper ores (2)
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gold ores (2)
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iron ores (1)
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lead ores (1)
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lead-zinc deposits (1)
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nickel ores (1)
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zinc ores (1)
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metals
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actinides
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thorium
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Th-232/Th-230 (1)
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alkali metals
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cesium
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Cs-137 (1)
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lithium (1)
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sodium (1)
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alkaline earth metals
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strontium
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Sr-87/Sr-86 (6)
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aluminum (1)
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manganese (1)
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nickel (1)
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rare earths
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europium (1)
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neodymium
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Nd-144/Nd-143 (2)
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yttrium (1)
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metamorphic rocks
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eclogite (1)
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impactites
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impact breccia
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suevite (1)
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metasedimentary rocks (5)
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schists
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metamorphism (1)
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mineral deposits, genesis (4)
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museums (2)
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North America
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Appalachian Basin (2)
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Appalachians
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Basin and Range Province
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Canadian Shield
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Superior Province
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Abitibi Belt (2)
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Great Plains
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Michigan Basin (1)
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North American Cordillera
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Rocky Mountains
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U. S. Rocky Mountains
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Sweetgrass Arch (2)
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Western Canada Sedimentary Basin (1)
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Western Interior
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Western Interior Seaway (5)
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Yakutat Terrane (1)
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Yukon-Tanana Terrane (1)
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ocean circulation (2)
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ocean floors (2)
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Oceania
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Polynesia
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Hawaii
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Hawaii County Hawaii
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Kauai County Hawaii
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oil and gas fields (2)
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orogeny (3)
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oxygen
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O-18/O-16 (2)
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Pacific Ocean
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East Pacific
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Northeast Pacific
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Gulf of California (1)
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North Pacific
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Northeast Pacific
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Gulf of California (1)
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South Pacific
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Kermadec Trench (1)
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Southwest Pacific
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Bismarck Sea (1)
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West Pacific
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Southwest Pacific
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Bismarck Sea (1)
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paleoclimatology (14)
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paleoecology (32)
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paleogeography (24)
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paleomagnetism (5)
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paleontology (2)
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Paleozoic
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Cambrian
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Lower Cambrian (1)
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Middle Cambrian
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Bright Angel Shale (1)
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Tapeats Sandstone (1)
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Carboniferous
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Lower Carboniferous
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Asbian (1)
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Mississippian
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Middle Mississippian
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Visean (1)
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Rampart Group (1)
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Redwall Limestone (1)
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Upper Mississippian
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Serpukhovian (1)
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Namurian (1)
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Pennsylvanian
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Middle Pennsylvanian
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Moscovian (2)
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Upper Carboniferous
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Millstone Grit (1)
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Westphalian (1)
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Devonian
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Middle Devonian
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Hamilton Group (1)
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Marcellus Shale (1)
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Old Red Sandstone (1)
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Upper Devonian
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Domanik Formation (1)
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Ordovician
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Middle Ordovician
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Deicke Bentonite Bed (3)
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Millbrig Bentonite Bed (3)
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Trenton Group (1)
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Upper Ordovician
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Caradocian
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Borrowdale Volcanic Group (1)
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Katian (1)
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Sandbian (1)
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Trentonian (1)
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Womble Shale (1)
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Permian
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Ecca Group (2)
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Guadalupian
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Capitanian (1)
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McCloud Limestone (1)
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Toroweap Formation (1)
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Upper Permian
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Permian-Triassic boundary (5)
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Silurian
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Lower Silurian
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Llandovery (1)
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Wenlock (2)
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Upper Silurian
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Ludlow
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Ludfordian (1)
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Pridoli (2)
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Taiyuan Formation (1)
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upper Paleozoic
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