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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Atlas Mountains
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
High Atlas (6)
-
-
-
Morocco
-
Moroccan Atlas Mountains
-
Anti-Atlas (2)
-
High Atlas (6)
-
-
-
-
Nubian Shield (1)
-
Southern Africa
-
Namibia
-
Damara Belt (1)
-
Karibib Namibia (1)
-
-
South Africa (1)
-
-
West Africa
-
Guinea (2)
-
Mauritania (1)
-
Mauritanides (1)
-
Senegal (2)
-
Taoudenni Basin (2)
-
-
-
Antarctica
-
East Antarctica (1)
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Transantarctic Mountains
-
Pensacola Mountains (2)
-
Queen Maud Range (1)
-
-
Victoria Land (1)
-
-
Arctic region
-
Greenland
-
Northern Greenland (2)
-
Peary Land (3)
-
West Greenland (1)
-
-
-
Asia
-
Altai Mountains
-
Chuya Alps (1)
-
Gorny Altai (4)
-
Kuznetsk Alatau (1)
-
-
Altai Russian Federation
-
Gorny Altai (4)
-
-
Arabian Peninsula
-
Arabian Shield (1)
-
-
Central Asia
-
Kazakhstan (1)
-
-
Chuya Alps (1)
-
Far East
-
China
-
Guizhou China (12)
-
Hubei China (1)
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Hunan China (1)
-
North China Platform (2)
-
Shandong China (7)
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Sichuan Basin (1)
-
South China Block (3)
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Xinjiang China
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Kuqa Depression (1)
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Tarim Basin (2)
-
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Yangtze Platform (2)
-
Yangtze Three Gorges (1)
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Yunnan China
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Chengjiang China (5)
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Jinning China (1)
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Kunming China (3)
-
-
-
Korea
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South Korea (2)
-
-
-
Himalayas
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Lesser Himalayas (1)
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Zanskar Range (1)
-
-
Indian Peninsula
-
India
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Himachal Pradesh India
-
Spiti (1)
-
-
Northeastern India
-
Arunachal Pradesh India (1)
-
-
-
Jammu and Kashmir (1)
-
-
Irkutsk Russian Federation (2)
-
Kemerovo Russian Federation (1)
-
Krasnoyarsk Russian Federation
-
Igarka Russian Federation (1)
-
-
Lena Basin (2)
-
Main Boundary Fault (1)
-
Middle East
-
Dead Sea (2)
-
Dead Sea Rift (1)
-
Iran
-
Elburz (1)
-
-
Israel
-
Timna (1)
-
-
Jordan (4)
-
Lebanon (1)
-
Turkey (2)
-
Wadi Araba (1)
-
-
Siberia (7)
-
Siberian Platform
-
Aldan Shield (1)
-
-
Tomsk Russian Federation (1)
-
Tunguska Basin (2)
-
Tunguska Syneclise (1)
-
West Siberia
-
Kuznetsk Alatau (1)
-
Siberian Lowland (1)
-
-
Yakutia Russian Federation (7)
-
Yenisei Basin (2)
-
Yenisei River (1)
-
Zabaykalskiy Russian Federation (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Gulf of Saint Lawrence (1)
-
North Sea (1)
-
-
-
Atlantic region (1)
-
Australasia
-
Australia
-
Adelaide Geosyncline (1)
-
Amadeus Basin (1)
-
Georgina Basin (9)
-
New South Wales Australia (2)
-
Northern Territory Australia (6)
-
Queensland Australia
-
Mount Isa Australia (1)
-
-
South Australia
-
Arrowie Basin (2)
-
Flinders Ranges (2)
-
-
Tamworth Belt (1)
-
Tasmania Australia
-
Hellyer Deposit (2)
-
-
-
New Zealand
-
Nelson New Zealand (1)
-
-
-
Bear River Range (2)
-
Canada
-
Eastern Canada
-
Gander Zone (1)
-
Maritime Provinces
-
New Brunswick (6)
-
Nova Scotia
-
Antigonish County Nova Scotia
-
Antigonish Nova Scotia (1)
-
-
Cape Breton Island (4)
-
-
-
Meguma Terrane (2)
-
Newfoundland and Labrador
-
Newfoundland
-
Avalon Peninsula (2)
-
Port au Port Peninsula (1)
-
-
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Ontario
-
Hamilton Ontario (1)
-
-
Quebec
-
Eastern Townships (1)
-
Gaspe Peninsula (3)
-
Saguenay County Quebec
-
Sept-Iles Quebec (1)
-
-
-
-
Mackenzie Mountains (7)
-
Nunavut
-
Ellesmere Island (1)
-
-
Queen Elizabeth Islands
-
Ellesmere Island (1)
-
-
Richardson Mountains (1)
-
Western Canada
-
Alberta
-
Banff National Park (1)
-
Jasper National Park (1)
-
Peace River Arch (1)
-
-
British Columbia (68)
-
Canadian Cordillera (1)
-
Canadian Rocky Mountains (11)
-
Northwest Territories (5)
-
Red Deer River (1)
-
Saskatchewan (2)
-
Selwyn Basin (1)
-
Yukon Territory (1)
-
-
-
Caribbean region
-
West Indies
-
Cayman Islands (1)
-
-
-
Colorado River (1)
-
Commonwealth of Independent States
-
Kazakhstan (1)
-
Russian Federation
-
Altai Russian Federation
-
Gorny Altai (4)
-
-
Chuya Alps (1)
-
Irkutsk Russian Federation (2)
-
Kemerovo Russian Federation (1)
-
Krasnoyarsk Russian Federation
-
Igarka Russian Federation (1)
-
-
Kuznetsk Alatau (1)
-
Lena Basin (2)
-
Siberian Platform
-
Aldan Shield (1)
-
-
Tomsk Russian Federation (1)
-
Tunguska Basin (2)
-
Tunguska Syneclise (1)
-
Yakutia Russian Federation (7)
-
Yenisei River (1)
-
Zabaykalskiy Russian Federation (1)
-
-
West Siberia
-
Kuznetsk Alatau (1)
-
Siberian Lowland (1)
-
-
-
Death Valley (2)
-
Europe
-
Baltic region
-
Estonia (1)
-
Lithuania (1)
-
-
Central Europe
-
Bohemian Massif (3)
-
Czech Republic
-
Barrandian Basin (2)
-
Bohemia
-
Prague Basin (1)
-
Prague Czech Republic (1)
-
-
-
Germany
-
Bavaria Germany
-
Franconian Forest (1)
-
Solnhofen Germany (1)
-
-
Hesse Germany
-
Messel Germany (1)
-
-
-
Poland
-
Swiety Krzyz Mountains (1)
-
-
-
Southern Europe
-
Iberian Peninsula
-
Central Iberian Zone (1)
-
Iberian Massif (1)
-
Iberian pyrite belt (1)
-
Ossa-Morena Zone (2)
-
Portugal (1)
-
Spain
-
Aragon Spain
-
Saragossa Spain (1)
-
-
Asturias Spain (1)
-
Cantabria Spain (2)
-
Cantabrian Mountains (3)
-
Castilla y Leon Spain (1)
-
Iberian Mountains (4)
-
Iberica (1)
-
-
-
-
Tornquist-Teisseyre Zone (1)
-
Western Europe
-
France
-
Ariege France (1)
-
Aude France (1)
-
Central Massif
-
Montagne Noire (2)
-
-
Languedoc (1)
-
-
Ireland
-
Leinster (1)
-
-
Scandinavia
-
Denmark
-
Bornholm (2)
-
-
Norway
-
Finnmark Norway (1)
-
-
Sweden
-
Jamtland Sweden (2)
-
Kalmar Sweden
-
Oland (2)
-
-
Skane (2)
-
Vastergotland (1)
-
-
-
United Kingdom
-
Great Britain
-
England
-
Devon England (1)
-
Shropshire England (1)
-
Warwickshire England (2)
-
-
Scotland (1)
-
Wales
-
Anglesey Wales (1)
-
Welsh Basin (1)
-
-
-
-
-
-
Grand Canyon (3)
-
Homestake Mine (1)
-
Lake District (1)
-
Lake Mead (1)
-
Marathon Basin (1)
-
Marble Canyon (2)
-
Mediterranean region (2)
-
North America
-
Appalachians
-
Central Appalachians (1)
-
Northern Appalachians (1)
-
Piedmont (2)
-
Southern Appalachians (1)
-
Valley and Ridge Province (2)
-
-
Basin and Range Province
-
Great Basin (5)
-
-
Canadian Shield
-
Grenville Province (2)
-
-
Kootenay Arc (1)
-
North American Cordillera
-
Canadian Cordillera (1)
-
-
Rocky Mountains
-
Canadian Rocky Mountains (11)
-
Northern Rocky Mountains (2)
-
Southern Rocky Mountains (1)
-
U. S. Rocky Mountains
-
Absaroka Range
-
Beartooth Mountains (1)
-
-
Bighorn Mountains (2)
-
Bridger Range (2)
-
Wasatch Range (2)
-
Wind River Range (2)
-
-
-
Rocky Mountains foreland (1)
-
Transcontinental Arch (1)
-
Western Canada Sedimentary Basin (1)
-
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific
-
South China Sea (1)
-
-
-
West Pacific
-
Northwest Pacific
-
South China Sea (1)
-
-
-
-
Shackleton Glacier (1)
-
South America
-
Argentina
-
La Rioja Argentina (1)
-
San Juan Argentina (2)
-
-
Precordillera (3)
-
-
South Island (1)
-
South Mountain (1)
-
South Mountain Batholith (1)
-
Southern Ocean
-
Weddell Sea (1)
-
-
Southern Uplands (1)
-
Spring Mountains (1)
-
United States
-
Alabama
-
Cherokee County Alabama (1)
-
Mobile Bay (1)
-
-
Alaska
-
Aleutian Islands (1)
-
Brooks Range (1)
-
Wiseman Quadrangle (1)
-
-
Arizona
-
Coconino County Arizona (1)
-
Mohave County Arizona (1)
-
Pima County Arizona (1)
-
-
Brevard Zone (1)
-
California
-
Central California (1)
-
Inyo County California
-
Inyo Mountains (1)
-
-
Nopah Range (1)
-
San Bernardino County California (1)
-
San Diego County California
-
La Jolla California (1)
-
-
Southern California (1)
-
-
Colorado (1)
-
Colorado Plateau (1)
-
Georgia
-
Floyd County Georgia (1)
-
-
Great Basin (5)
-
Idaho
-
Bannock Range (1)
-
Lemhi County Idaho (1)
-
Lemhi Range (1)
-
-
Illinois
-
Mazon Creek (1)
-
-
Maine
-
Hancock County Maine (1)
-
Penobscot Bay (1)
-
Waldo County Maine (1)
-
-
Massachusetts
-
Middlesex County Massachusetts (1)
-
Norfolk County Massachusetts (1)
-
Suffolk County Massachusetts (1)
-
-
Montana
-
Bridger Range (2)
-
Gallatin County Montana (2)
-
Meagher County Montana (1)
-
Park County Montana (3)
-
-
Narragansett Basin (1)
-
Nevada
-
Clark County Nevada (3)
-
Esmeralda County Nevada (1)
-
Lincoln County Nevada (8)
-
Nye County Nevada (2)
-
White Pine County Nevada (1)
-
-
New England (1)
-
New Hampshire (3)
-
New York
-
Columbia County New York (1)
-
Rensselaer County New York (1)
-
Saint Lawrence County New York (1)
-
-
Oklahoma
-
Arbuckle Mountains (1)
-
Comanche County Oklahoma (1)
-
Criner Hills (1)
-
Kiowa County Oklahoma (1)
-
Wichita Mountains (2)
-
-
Pennsylvania
-
Lancaster County Pennsylvania (1)
-
York County Pennsylvania
-
York Pennsylvania (1)
-
-
-
Rhode Island (2)
-
South Carolina
-
Aiken County South Carolina (1)
-
Oconee County South Carolina (1)
-
-
South Dakota
-
Union County South Dakota (1)
-
-
Southern Oklahoma Aulacogen (1)
-
Southwestern U.S. (1)
-
Tennessee
-
Anderson County Tennessee (1)
-
Carter County Tennessee (1)
-
Greene County Tennessee (1)
-
Hamblen County Tennessee (1)
-
Hawkins County Tennessee (2)
-
Knox County Tennessee (1)
-
Washington County Tennessee (1)
-
-
Texas
-
Brewster County Texas (1)
-
-
U. S. Rocky Mountains
-
Absaroka Range
-
Beartooth Mountains (1)
-
-
Bighorn Mountains (2)
-
Bridger Range (2)
-
Wasatch Range (2)
-
Wind River Range (2)
-
-
Utah
-
Beaver County Utah (1)
-
Box Elder County Utah (10)
-
Drum Mountains (11)
-
Juab County Utah (1)
-
Millard County Utah
-
House Range (19)
-
-
Summit County Utah (1)
-
Wah Wah Mountains (1)
-
Wasatch Plateau (1)
-
Weber County Utah
-
Ogden Utah (1)
-
-
-
Virginia
-
Carroll County Virginia (1)
-
Wythe County Virginia (1)
-
-
Washington
-
Pend Oreille County Washington (2)
-
-
Western U.S. (2)
-
Wisconsin
-
Jackson County Wisconsin (1)
-
-
Wyoming
-
Fremont County Wyoming (2)
-
Park County Wyoming (1)
-
Teton County Wyoming
-
Grand Teton National Park (1)
-
-
Wind River Range (2)
-
-
Yavapai Province (1)
-
-
-
commodities
-
barite deposits (1)
-
bitumens (3)
-
brines (1)
-
magnesite deposits (1)
-
metal ores
-
copper ores (5)
-
gold ores (5)
-
iron ores (1)
-
lead ores (7)
-
lead-zinc deposits (10)
-
molybdenum ores (1)
-
nickel ores (1)
-
polymetallic ores (1)
-
silver ores (5)
-
zinc ores (7)
-
-
mineral deposits, genesis (14)
-
mineral exploration (4)
-
petroleum (12)
-
phosphate deposits (1)
-
talc deposits (2)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (15)
-
organic carbon (7)
-
-
chemical ratios (1)
-
halogens
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bromine (1)
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chlorine (1)
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fluorine (1)
-
iodine (1)
-
-
hydrogen
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D/H (1)
-
-
isotope ratios (23)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
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Pb-208/Pb-204 (1)
-
-
stable isotopes
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C-13/C-12 (15)
-
D/H (1)
-
Hf-177/Hf-176 (1)
-
Nd-144/Nd-143 (3)
-
O-18/O-16 (11)
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-206 (1)
-
Pb-208/Pb-204 (1)
-
S-34/S-32 (4)
-
Sr-87/Sr-86 (5)
-
-
-
Lu/Hf (1)
-
metals
-
actinides
-
uranium (1)
-
-
alkali metals
-
rubidium (1)
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sodium (1)
-
-
alkaline earth metals
-
calcium (1)
-
strontium
-
Sr-87/Sr-86 (5)
-
-
-
aluminum (2)
-
copper (1)
-
hafnium
-
Hf-177/Hf-176 (1)
-
-
iron (1)
-
lead
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-206 (1)
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Pb-208/Pb-204 (1)
-
-
manganese (1)
-
platinum group (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (3)
-
-
-
silver (1)
-
-
noble gases (1)
-
oxygen
-
O-18/O-16 (11)
-
-
phosphorus (1)
-
silicon (1)
-
sulfur
-
S-34/S-32 (4)
-
-
-
fossils
-
bacteria (2)
-
borings (2)
-
burrows (9)
-
Chordata
-
Vertebrata
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Tetrapoda
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Reptilia
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Diapsida
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Lepidosauria
-
Squamata
-
Serpentes
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Colubridae (1)
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-
-
-
-
-
-
-
-
coprolites (2)
-
cyanobacteria (4)
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Enteropneusta (1)
-
eukaryotes (2)
-
fungi (2)
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Graptolithina (5)
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Hemichordata (4)
-
ichnofossils
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Arenicolites (1)
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Cruziana (1)
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Planolites (2)
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Rusophycus (2)
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Skolithos (2)
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Thalassinoides (1)
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Trypanites (1)
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-
Invertebrata
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Archaeocyatha (4)
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Arthropoda
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Chelicerata (3)
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Mandibulata
-
Crustacea
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Cirripedia (2)
-
-
-
Trilobitomorpha
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Trilobita
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Agnostida (9)
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Corynexochida (5)
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Ptychopariida (12)
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Redlichiida (3)
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-
-
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Brachiopoda
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Articulata
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Orthida (1)
-
-
Inarticulata (4)
-
-
Bryozoa (1)
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Cnidaria
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Hydrozoa (2)
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-
Echinodermata
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Crinozoa
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Crinoidea (1)
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Eocrinoidea (7)
-
-
Echinozoa
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Edrioasteroidea (4)
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Holothuroidea (1)
-
-
Homalozoa
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Stylophora (2)
-
-
-
Mollusca
-
Bivalvia (3)
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Cephalopoda (1)
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Gastropoda
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Archaeogastropoda (1)
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Hyolithes (8)
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Tentaculitida
-
Tentaculitidae
-
Tentaculites (1)
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-
-
-
Porifera
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Calcarea
-
Sphinctozoa (1)
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Demospongea (10)
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Hexactinellida (5)
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-
Protista
-
Foraminifera
-
Textulariina
-
Ammodiscacea
-
Ammodiscidae (1)
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-
-
-
Radiolaria
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Spumellina (1)
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-
-
Vermes
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Annelida (2)
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Nematomorpha (1)
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Polychaeta (1)
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Priapulida (2)
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Sipunculoida (1)
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-
-
Metazoa (7)
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microfossils
-
Conodonta (7)
-
problematic microfossils (2)
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-
palynomorphs
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acritarchs (3)
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Plantae
-
algae
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Epiphyton (3)
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-
-
problematic fossils
-
problematic microfossils (2)
-
-
Pterobranchia (3)
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thallophytes (9)
-
tracks (3)
-
trails (3)
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-
geochronology methods
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(U-Th)/He (1)
-
Ar/Ar (4)
-
fission-track dating (1)
-
K/Ar (1)
-
Lu/Hf (1)
-
paleomagnetism (6)
-
Rb/Sr (7)
-
Re/Os (2)
-
Sm/Nd (2)
-
U/Pb (16)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (3)
-
-
Tertiary
-
lower Tertiary (1)
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Neogene
-
Miocene (2)
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-
Paleogene
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Eocene
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Absaroka Supergroup (1)
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-
-
-
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Mesozoic
-
Cretaceous (1)
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Jurassic
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Aztec Sandstone (1)
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Norphlet Formation (1)
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Kayenta Formation (1)
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Triassic
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Lower Triassic
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Bunter
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Voltzia Sandstone (1)
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Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (1)
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-
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Moldanubian (1)
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Paleozoic
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Cambrian
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Acadian (26)
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Bonanza King Formation (1)
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Carrara Formation (4)
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Conasauga Group (2)
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Lancara Formation (3)
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Lower Cambrian
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Atdabanian (4)
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Gog Group (1)
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Kinzers Formation (4)
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Rome Formation (1)
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Shady Dolomite (2)
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Terreneuvian (1)
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Tommotian (4)
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Middle Cambrian
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Barrandian (8)
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Bright Angel Shale (5)
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Burgess Shale (83)
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Flathead Sandstone (13)
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Marjum Formation (17)
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Metaline Limestone (4)
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Mount Scott Granite (3)
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Wheeler Formation (23)
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Zhangxia Formation (3)
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Mount Read Volcanics (6)
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Pioche Shale (8)
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Tapeats Sandstone (3)
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Tintic Quartzite (1)
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Upper Cambrian
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Dunderberg Shale (1)
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Eau Claire Formation (1)
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Furongian
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Paibian (1)
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Goldenville Formation (2)
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Pilgrim Formation (3)
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Potsdam Sandstone (1)
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Steptoean (1)
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-
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Carboniferous
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Mabou Group (1)
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Mississippian
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Madison Group (1)
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Redwall Limestone (1)
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Pennsylvanian
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Lower Pennsylvanian
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Haymond Formation (1)
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-
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Upper Carboniferous (1)
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Cow Head Group (2)
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Deadwood Formation (2)
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Devonian
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Lower Devonian (4)
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Upper Devonian
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Jefferson Group (2)
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Zlichovian (1)
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Horton Group (1)
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lower Paleozoic (7)
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Ordovician
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Lower Ordovician
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Beekmantown Group (1)
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Meguma Group (2)
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Middle Ordovician
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Bromide Formation (1)
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Skiddaw Slates (1)
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Upper Ordovician
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Bighorn Dolomite (1)
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Caradocian
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Borrowdale Volcanic Group (1)
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Katian (1)
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Trentonian (1)
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Wild Bight Group (1)
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Permian
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Toroweap Formation (1)
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Sauk Sequence (3)
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Shawangunk Formation (1)
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Silurian
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Lower Silurian
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Grimsby Sandstone (1)
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Llandovery
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Aberystwyth Grits (1)
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Tuscarora Formation (1)
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Wenlock
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Homerian (1)
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-
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Upper Silurian
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Ludlow
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Ludfordian (1)
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Tensleep Sandstone (1)
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upper Paleozoic (1)
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Phanerozoic (3)
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Precambrian
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Archean
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Gilman Formation (1)
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Chuar Group (1)
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Stirling Quartzite (1)
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upper Precambrian
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Proterozoic
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Belt Supergroup (1)
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Neoproterozoic
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Sinian
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Dengying Formation (1)
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-
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igneous rocks
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agglutinates (1)
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igneous rocks
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carbonatites (2)
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plutonic rocks
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anorthosite (1)
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diabase
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gabbros
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alkali gabbros (2)
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granites
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adamellite (2)
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alaskite (1)
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A-type granites (1)
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leucogranite (1)
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rapakivi (1)
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granodiorites (2)
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ijolite (1)
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syenites
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nepheline syenite (1)
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ultramafics
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chromitite (1)
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pyroxenite
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clinopyroxenite (1)
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volcanic rocks
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andesites
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basalts
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flood basalts (1)
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olivine tholeiite (1)
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basanite
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dacites (1)
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pyroclastics
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rhyolites (4)
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ophiolite (1)
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metamorphic rocks
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phosphates
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pyroxene group
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clinopyroxene
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framework silicates
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silica minerals
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orthosilicates
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zircon group
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zircon (14)
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sorosilicates
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lawsonite (1)
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sheet silicates
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clay minerals
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kaolinite (2)
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illite (3)
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serpentine group
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sulfates (1)
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sulfides
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pyrite (3)
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sphalerite (1)
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Primary terms
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absolute age (29)
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Africa
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Atlas Mountains
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Antarctica
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Asia
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Yakutia Russian Federation (7)
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Atlantic Ocean
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Australasia
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Australia
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New Zealand
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bacteria (2)
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Canada
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Mackenzie Mountains (7)
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carbon
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C-13/C-12 (15)
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organic carbon (7)
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Caribbean region
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Cenozoic
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Quaternary
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Tertiary
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lower Tertiary (1)
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Neogene
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Paleogene
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Eocene
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Absaroka Supergroup (1)
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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Diapsida
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Lepidosauria
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Squamata
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Serpentes
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Colubridae (1)
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clay mineralogy (5)
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climate change (1)
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Europe
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Germany
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Poland
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Southern Europe
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igneous rocks
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Invertebrata
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Brachiopoda
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Tentaculitida
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Porifera
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Protista
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Textulariina
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Radiolaria
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Vermes
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isotopes
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stable isotopes
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C-13/C-12 (15)
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O-18/O-16 (11)
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S-34/S-32 (4)
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lava (3)
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maps (2)
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Mesozoic
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Cretaceous (1)
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Jurassic
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Aztec Sandstone (1)
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Norphlet Formation (1)
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Kayenta Formation (1)
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Triassic
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Lower Triassic
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Bunter
-
Voltzia Sandstone (1)
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-
-
Moenkopi Formation (1)
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Upper Triassic
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Chinle Formation (1)
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metal ores
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North America
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Appalachians
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ocean circulation (1)
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oxygen
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O-18/O-16 (11)
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Pacific Ocean
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West Pacific
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Paleozoic
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Cambrian
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Acadian (26)
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Bonanza King Formation (1)
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Carrara Formation (4)
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Conasauga Group (2)
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Lancara Formation (3)
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Lower Cambrian
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Atdabanian (4)
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Gog Group (1)
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Kinzers Formation (4)
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Rome Formation (1)
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Shady Dolomite (2)
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Middle Cambrian
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Barrandian (8)
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Bright Angel Shale (5)
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Burgess Shale (83)
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Flathead Sandstone (13)
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Marjum Formation (17)
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Metaline Limestone (4)
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Wheeler Formation (23)
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Zhangxia Formation (3)
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Mount Read Volcanics (6)
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Pioche Shale (8)
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Upper Cambrian
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Dunderberg Shale (1)
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Eau Claire Formation (1)
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Furongian
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Goldenville Formation (2)
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Pilgrim Formation (3)
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Carboniferous
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Pennsylvanian
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Lower Pennsylvanian
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Upper Carboniferous (1)
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Devonian
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Zlichovian (1)
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Ordovician
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Katian (1)
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Permian
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Toroweap Formation (1)
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Sauk Sequence (3)
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Silurian
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Lower Silurian
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Grimsby Sandstone (1)
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Llandovery
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Tuscarora Formation (1)
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Wenlock
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Homerian (1)
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Upper Silurian
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Ludlow
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Ludfordian (1)
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Tensleep Sandstone (1)
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palynomorphs
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Plantae
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Epiphyton (3)
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plate tectonics (12)
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Precambrian
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Archean
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Gilman Formation (1)
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Chuar Group (1)
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Stirling Quartzite (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic
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Neoproterozoic
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Sinian
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Dengying Formation (1)
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problematic fossils
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Pterobranchia (3)
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arkose (2)
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South America
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Argentina
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Precordillera (3)
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Southern Ocean
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stratigraphy (34)
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sulfur
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S-34/S-32 (4)
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United States
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Alabama
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California
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