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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Kenya (2)
-
Tanzania (1)
-
-
East African Rift (1)
-
North Africa
-
Libya
-
Sirte Basin (1)
-
-
-
Southern Africa
-
South Africa
-
Northern Cape Province South Africa
-
Kimberley South Africa (1)
-
-
-
-
-
Antarctica
-
Ross Ice Shelf (1)
-
Transantarctic Mountains (1)
-
West Antarctica (1)
-
-
Arctic Ocean
-
Amerasia Basin (1)
-
Nares Strait (1)
-
Norwegian Sea
-
Haltenbanken (3)
-
-
-
Arctic region
-
Greenland (3)
-
-
Asia
-
Central Asia (1)
-
Far East
-
China
-
Anhui China (1)
-
Gansu China
-
Hexi Corridor (1)
-
-
Henan China (1)
-
Hubei China
-
Wuhan China (1)
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Yichang China (1)
-
-
Jiangsu China
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Nanjing China (1)
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Qaidam Basin (1)
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Qilian Mountains (1)
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Shandong China
-
Jiyang Depression (1)
-
-
Shanxi China (1)
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Xinjiang China
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Tahe Field (1)
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Tarim Basin (1)
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-
Yangtze River (1)
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-
Indonesia (1)
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Japan (1)
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Korea
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South Korea (1)
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-
-
Himalayas (1)
-
Indian Peninsula
-
India (2)
-
Jammu and Kashmir
-
Ladakh (1)
-
-
-
Tibetan Plateau (1)
-
-
Atlantic Ocean
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North Atlantic
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Gulf of Mexico (6)
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Labrador Sea (1)
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North Sea
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Viking Graben (1)
-
-
-
-
Australasia
-
Australia
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Queensland Australia
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Brisbane Australia (1)
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Burdekin Delta (1)
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Burdekin River (1)
-
-
South Australia
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Spencer Gulf (2)
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-
-
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Avalon Zone (1)
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Baffin Bay (1)
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Bear Valley (2)
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Border Ranges Fault (1)
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Canada
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Arctic Archipelago (6)
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Eastern Canada
-
Baffin Island (2)
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Gander Zone (1)
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Maritime Provinces
-
New Brunswick
-
Restigouche County New Brunswick (1)
-
-
-
Ontario
-
Moose River basin (1)
-
Ottawa Ontario (3)
-
-
Quebec
-
Charlevoix (1)
-
Quebec City Quebec (2)
-
-
-
Mackenzie Mountains (1)
-
Nunavut
-
Baffin Island (2)
-
Ellesmere Island
-
Tanquary Fiord (1)
-
-
Sverdrup Basin (3)
-
Sverdrup Islands
-
Axel Heiberg Island (2)
-
-
-
Queen Elizabeth Islands
-
Ellesmere Island
-
Tanquary Fiord (1)
-
-
Sverdrup Basin (3)
-
Sverdrup Islands
-
Axel Heiberg Island (2)
-
-
-
Western Canada
-
Alberta
-
Alberta Basin (1)
-
Banff Alberta (1)
-
Calgary Alberta (1)
-
-
British Columbia
-
Mount Meager (1)
-
Vancouver Island (1)
-
-
Canadian Rocky Mountains (2)
-
Manitoba (1)
-
Northwest Territories (6)
-
Saskatchewan (2)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Hispaniola
-
Haiti (1)
-
-
-
-
-
-
Cascade Range (5)
-
Chicxulub Crater (1)
-
Coast Mountains (1)
-
Coast Ranges (7)
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Columbia River (2)
-
Columbia River basin (2)
-
Coyote Lake (3)
-
Death Valley (1)
-
Diablo Range (1)
-
Dunnage Zone (1)
-
East Pacific Ocean Islands
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Hawaii
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Mauna Loa (1)
-
Molokai (1)
-
-
-
Emerson Fault (1)
-
Europe
-
Alps
-
Piedmont Alps
-
Dora Maira Massif (1)
-
-
Western Alps
-
Cottian Alps
-
Dora Maira Massif (1)
-
-
-
-
Central Europe
-
Germany
-
Eifel (1)
-
Hamburg Germany (1)
-
Rhineland-Palatinate Germany (1)
-
-
Poland
-
Podhale (1)
-
-
Switzerland
-
Vaud Switzerland (1)
-
-
-
Rhenish Schiefergebirge
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Eifel (1)
-
-
Southern Europe
-
Iberian Peninsula
-
Spain
-
Basque Provinces Spain (1)
-
Cantabrian Basin (1)
-
Castilla y Leon Spain
-
Burgos Spain (1)
-
-
-
-
Italy
-
Calabria Italy (1)
-
Liguria Italy (1)
-
Piemonte Italy
-
Dora Maira Massif (1)
-
-
Sicily Italy
-
Mount Etna (1)
-
-
-
-
Western Europe
-
Cottian Alps
-
Dora Maira Massif (1)
-
-
Scandinavia
-
Finland
-
Varsinais-Suomi Finland
-
Turku Finland (1)
-
-
-
Norway
-
Sor-Trondelag Norway
-
Trondheim Norway (1)
-
-
-
Sweden
-
Halland Sweden (1)
-
Vastra Gotaland Sweden
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Goteborg Sweden (1)
-
-
-
-
United Kingdom
-
Great Britain
-
Bristol Channel (1)
-
England
-
Bristol England (1)
-
Cumbria England (1)
-
Durham England (1)
-
East Anglia
-
Norfolk England
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Norwich England (1)
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-
-
Somerset England (1)
-
Yorkshire England
-
North Yorkshire England (1)
-
-
-
Wales
-
Caernarvonshire Wales
-
Snowdonia (1)
-
-
Gwynedd Wales
-
Snowdonia (1)
-
-
-
-
-
-
-
Front Range (1)
-
Glacier Bay (1)
-
Glacier Peak (1)
-
Glass Mountains (1)
-
Grand Canyon (1)
-
Gulf of Mexico Basin (1)
-
Indian Ocean
-
Arabian Sea
-
Persian Gulf (1)
-
-
Naturaliste Plateau (1)
-
-
International Ocean Discovery Program (2)
-
Melville Island (1)
-
Mount Baker (1)
-
North America
-
Appalachian Basin (3)
-
Appalachians
-
Northern Appalachians (3)
-
Piedmont (1)
-
Southern Appalachians (2)
-
-
Basin and Range Province
-
Great Basin (7)
-
-
Canadian Shield (1)
-
Coast plutonic complex (2)
-
Grenville Front (1)
-
Gulf Coastal Plain (5)
-
Humber Zone (1)
-
Intermontane Belt (2)
-
Keweenawan Rift (1)
-
Michigan Basin (3)
-
Mississippi River basin (1)
-
Niagara Falls (1)
-
North American Cordillera (1)
-
Okanogan Range (1)
-
Rocky Mountain Trench (1)
-
Rocky Mountains
-
Canadian Rocky Mountains (2)
-
Southern Rocky Mountains (2)
-
U. S. Rocky Mountains
-
Bighorn Mountains (1)
-
San Juan Mountains (3)
-
Sawatch Range (1)
-
-
-
Saint Lawrence River (1)
-
Slide Mountain Terrane (1)
-
Western Canada Sedimentary Basin (5)
-
Western Interior
-
Western Interior Seaway (1)
-
-
Yukon-Tanana Upland (1)
-
-
Oceania
-
Kiribati (1)
-
Melanesia
-
New Caledonia (1)
-
-
Micronesia (1)
-
Polynesia
-
Cook Islands (1)
-
French Polynesia
-
Society Islands
-
Tahiti (1)
-
-
-
Hawaii
-
Mauna Loa (1)
-
Molokai (1)
-
-
Tonga (1)
-
-
-
Pacific Coast (2)
-
Pacific Ocean
-
East Pacific
-
Southeast Pacific (1)
-
-
Equatorial Pacific (1)
-
North Pacific
-
Northwest Pacific
-
South China Sea (1)
-
Yellow Sea
-
Bohai Sea
-
Bohai Bay (1)
-
-
-
-
-
South Pacific
-
Southeast Pacific (1)
-
Southwest Pacific
-
Coral Sea
-
Great Barrier Reef (1)
-
-
-
-
West Pacific
-
Northwest Pacific
-
South China Sea (1)
-
Yellow Sea
-
Bohai Sea
-
Bohai Bay (1)
-
-
-
-
Southwest Pacific
-
Coral Sea
-
Great Barrier Reef (1)
-
-
-
-
-
Pasco Basin (1)
-
Permian Basin (1)
-
Salinas Valley (1)
-
San Andreas Fault (27)
-
San Bernardino Mountains (1)
-
Santa Clara Valley (10)
-
Santa Cruz Mountains (11)
-
Shackleton Glacier (1)
-
Sierra Nevada (3)
-
South America
-
Andes (2)
-
Argentina
-
San Juan Argentina (1)
-
-
Peru
-
Pasco Peru
-
Cerro de Pasco Peru (1)
-
-
-
-
Southern Ocean
-
Ross Sea (1)
-
-
Twin Lakes (1)
-
United States
-
Alabama (3)
-
Alaska
-
Aleutian Islands
-
Amchitka Island (1)
-
-
Glacier Bay National Park (1)
-
Skagway Quadrangle (1)
-
-
Anadarko Basin (1)
-
Ardmore Basin (2)
-
Arizona (1)
-
Arkansas (5)
-
Arkoma Basin (1)
-
Atlantic Coastal Plain (1)
-
California
-
Butte County California
-
Oroville California (1)
-
-
Calaveras Fault (12)
-
Central California (14)
-
Contra Costa County California (1)
-
Hayward Fault (1)
-
Inyo County California
-
Funeral Mountains (1)
-
-
Lake County California (1)
-
Mono County California
-
Mono Craters (1)
-
-
Monterey County California
-
Parkfield California (1)
-
Salinas California (1)
-
-
Northern California (4)
-
Salinian Block (1)
-
San Benito County California
-
Hollister California (2)
-
San Juan Bautista California (3)
-
-
San Bernardino County California
-
Johnson Valley Fault (1)
-
-
San Francisco Bay (5)
-
San Francisco Bay region (6)
-
San Francisco County California
-
San Francisco California (1)
-
-
San Gregorio Fault (1)
-
San Luis Obispo County California (1)
-
Santa Barbara County California
-
Point Conception (1)
-
Santa Barbara California (1)
-
-
Santa Clara County California
-
San Jose California (3)
-
-
Santa Cruz County California (5)
-
Siskiyou County California
-
Mount Shasta (3)
-
-
Solano County California (1)
-
Sonoma County California
-
Santa Rosa California (1)
-
-
Southern California (18)
-
-
Carolina Terrane (1)
-
Cherokee Basin (1)
-
Colorado
-
Chaffee County Colorado (1)
-
Douglas County Colorado (1)
-
Fremont County Colorado
-
Canon City Colorado (1)
-
-
Gunnison County Colorado (1)
-
Saguache County Colorado (4)
-
San Juan volcanic field (1)
-
Sawatch Range (1)
-
-
Colorado Plateau (3)
-
Connecticut Valley (1)
-
Eastern U.S. (1)
-
Florida
-
Broward County Florida (1)
-
Everglades (1)
-
Miami-Dade County Florida (1)
-
Monroe County Florida (1)
-
Palm Beach County Florida (1)
-
-
Forest City Basin (2)
-
Georgia
-
Dade County Georgia (1)
-
-
Great Basin (7)
-
Hawaii
-
Mauna Loa (1)
-
Molokai (1)
-
-
Hudson River (1)
-
Hurricane Fault (1)
-
Idaho
-
Boise County Idaho (1)
-
Snake River plain (2)
-
-
Illinois
-
Alexander County Illinois (1)
-
Calhoun County Illinois (1)
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Champaign County Illinois (1)
-
Fulton County Illinois (1)
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Grundy County Illinois (1)
-
Hamilton County Illinois (1)
-
Kendall County Illinois (1)
-
La Salle County Illinois (1)
-
Macon County Illinois (4)
-
McHenry County Illinois (2)
-
Putnam County Illinois (1)
-
Randolph County Illinois (1)
-
Wabash County Illinois (1)
-
White County Illinois (3)
-
Will County Illinois (2)
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Williamson County Illinois (1)
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-
Illinois Basin (24)
-
Indiana
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Bartholomew County Indiana (1)
-
-
Iowa
-
Jackson County Iowa (1)
-
-
Kentucky
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Carlisle County Kentucky (1)
-
Henderson County Kentucky (1)
-
Rough Creek fault zone (5)
-
-
Klamath Mountains (1)
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Louisiana (2)
-
Maine
-
Piscataquis County Maine
-
Mount Katahdin (1)
-
-
-
Maryland
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Montgomery County Maryland (1)
-
-
Merrimack Synclinorium (1)
-
Midcontinent (5)
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Midwest (4)
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Mississippi (2)
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Mississippi Embayment (2)
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Mississippi River (2)
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Mississippi Valley
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Upper Mississippi Valley (1)
-
-
Missouri
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Mississippi County Missouri (1)
-
Saint Louis County Missouri
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Saint Louis Missouri (1)
-
-
-
Montana
-
Granite County Montana (1)
-
Lincoln County Montana
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Libby Montana (2)
-
-
Powell County Montana (1)
-
-
Nevada
-
Clark County Nevada
-
Las Vegas Nevada (1)
-
-
Esmeralda County Nevada
-
Silver Peak Mountains (1)
-
-
Lander County Nevada (1)
-
Lincoln County Nevada (3)
-
Mormon Mountains (1)
-
Nevada Test Site (10)
-
Nye County Nevada
-
Pahute Mesa (8)
-
Yucca Mountain (8)
-
-
Pershing County Nevada (1)
-
Shoshone Mountains (1)
-
Yucca Flat (1)
-
-
New England (1)
-
New Hampshire
-
Coos County New Hampshire (1)
-
-
New Jersey
-
Mercer County New Jersey
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Trenton New Jersey (1)
-
-
-
New Madrid region (10)
-
New Mexico
-
Jemez Mountains (1)
-
Lea County New Mexico (1)
-
Valles Caldera (1)
-
-
New York (1)
-
North Dakota
-
Emmons County North Dakota (1)
-
Morton County North Dakota (1)
-
-
Ohio (2)
-
Ohio River valley (1)
-
Oklahoma
-
Arbuckle Mountains (1)
-
Meers Fault (1)
-
Wichita Mountains (1)
-
-
Oregon
-
Gilliam County Oregon (1)
-
Hood River County Oregon (1)
-
Multnomah County Oregon
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Portland Oregon (1)
-
-
Sherman County Oregon (1)
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Wasco County Oregon (1)
-
-
Ouachita Mountains (2)
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Paradox Basin (1)
-
Pennsylvania
-
Carbon County Pennsylvania (1)
-
Philadelphia County Pennsylvania
-
Philadelphia Pennsylvania (1)
-
-
Schuylkill County Pennsylvania (1)
-
-
Reelfoot Rift (9)
-
Sevier orogenic belt (1)
-
South Carolina
-
Charleston County South Carolina
-
Charleston South Carolina (1)
-
-
Savannah River Site (1)
-
-
Southwestern U.S. (1)
-
Tennessee
-
Hamilton County Tennessee (1)
-
-
Texas
-
Brazoria County Texas (1)
-
East Texas Field (1)
-
Hardeman County Texas (1)
-
Harris County Texas (1)
-
-
U. S. Rocky Mountains
-
Bighorn Mountains (1)
-
San Juan Mountains (3)
-
Sawatch Range (1)
-
-
Utah
-
Garfield County Utah (1)
-
Grand Staircase-Escalante National Monument (2)
-
Kaiparowits Plateau (1)
-
Kane County Utah (4)
-
Utah County Utah
-
Provo Utah (1)
-
-
Washington County Utah (1)
-
-
Wabash Valley (7)
-
Walker Lane (1)
-
Wasatch fault zone (1)
-
Washington
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Clark County Washington (1)
-
Klickitat County Washington (1)
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Skamania County Washington (1)
-
-
West Virginia (1)
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Western U.S. (4)
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Wisconsin (1)
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Wyoming (2)
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White Mountains (1)
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commodities
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anhydrite deposits (1)
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bitumens (2)
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brines (6)
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coal deposits (1)
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energy sources (1)
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fluorspar deposits (1)
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geothermal energy (1)
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gypsum deposits (1)
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metal ores
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gold ores (2)
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lead ores (1)
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lead-zinc deposits (1)
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zinc ores (1)
-
-
mineral deposits, genesis (4)
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oil and gas fields (13)
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petroleum
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natural gas (11)
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vermiculite deposits (1)
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water resources (1)
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zeolite deposits (1)
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elements, isotopes
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carbon
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C-13 (1)
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C-13/C-12 (13)
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C-14 (6)
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organic carbon (2)
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chemical ratios (2)
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halogens (1)
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hydrogen
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D/H (1)
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isotope ratios (25)
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isotopes
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radioactive isotopes
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Be-10 (1)
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C-14 (6)
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stable isotopes
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C-13 (1)
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C-13/C-12 (13)
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D/H (1)
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He-3 (1)
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Hf-177/Hf-176 (1)
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N-15/N-14 (1)
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Nd-144/Nd-143 (2)
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O-16 (1)
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O-17/O-16 (2)
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O-18/O-16 (14)
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Sr-87/Sr-86 (6)
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Lu/Hf (1)
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metals
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alkali metals
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potassium (1)
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alkaline earth metals
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beryllium
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Be-10 (1)
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calcium (1)
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magnesium (4)
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strontium
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Sr-87/Sr-86 (6)
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aluminum (1)
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copper (1)
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hafnium
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Hf-177/Hf-176 (1)
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iron
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ferric iron (1)
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lead (2)
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rare earths
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neodymium
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Nd-144/Nd-143 (2)
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-
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silver (1)
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zinc (2)
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nitrogen
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N-15/N-14 (1)
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noble gases
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helium
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He-3 (1)
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oxygen
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O-16 (1)
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O-17/O-16 (2)
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O-18/O-16 (14)
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trace metals (1)
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fossils
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bacteria (1)
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burrows (1)
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Chordata
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Vertebrata
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Agnatha (1)
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Tetrapoda
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Aves (1)
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Mammalia (2)
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-
-
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Graptolithina
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Graptoloidea (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (1)
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Trilobitomorpha
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Trilobita
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Ptychopariida
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Asaphidae (1)
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-
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Brachiopoda
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Articulata
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Pentamerida (1)
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-
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Cnidaria (1)
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Mollusca
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Bivalvia
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Ostreoidea
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Ostreidae (1)
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-
-
Gastropoda
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Neogastropoda (1)
-
-
-
Porifera
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Stromatoporoidea (4)
-
-
Protista
-
Foraminifera (2)
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Thecamoeba (1)
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-
-
microfossils
-
Conodonta
-
Palmatolepis (1)
-
-
-
palynomorphs
-
Dinoflagellata (1)
-
megaspores (1)
-
miospores
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Paleogene
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Renova Formation (1)
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Mesozoic
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Paleozoic
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Carboniferous
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Mississippian
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Upper Mississippian
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Pennsylvanian
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Upper Carboniferous (1)
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Primary terms
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Bivalvia
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Ostreoidea
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Ostreidae (1)
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Gastropoda
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Neogastropoda (1)
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Porifera
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Stromatoporoidea (4)
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Protista
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Foraminifera (2)
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Thecamoeba (1)
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isostasy (2)
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isotopes
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radioactive isotopes
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Be-10 (1)
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C-14 (6)
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stable isotopes
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C-13 (1)
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C-13/C-12 (13)
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D/H (1)
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He-3 (1)
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Hf-177/Hf-176 (1)
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N-15/N-14 (1)
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Nd-144/Nd-143 (2)
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O-16 (1)
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O-17/O-16 (2)
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O-18/O-16 (14)
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Sr-87/Sr-86 (6)
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land subsidence (5)
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land use (2)
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lava (3)
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lineation (1)
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magmas (9)
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mantle (4)
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maps (4)
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marine geology (1)
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Mesozoic
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Cretaceous
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Dakota Formation (2)
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Lower Cretaceous
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Cedar Mountain Formation (1)
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Middle Cretaceous (1)
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Upper Cretaceous
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Campanian (2)
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Fox Hills Formation (1)
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Kaiparowits Formation (2)
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Maestrichtian (1)
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Santonian (1)
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Senonian (3)
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Straight Cliffs Formation (2)
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Tropic Shale (1)
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Wahweap Formation (4)
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Viking Formation (1)
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Franciscan Complex (1)
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Glen Canyon Group (1)
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Jurassic
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Carmel Formation (1)
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Fernie Formation (1)
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Lower Jurassic
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Dunlin Group (1)
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Middle Jurassic
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Bajocian
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Brent Group (1)
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San Rafael Group (1)
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Upper Jurassic
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Morrison Formation (2)
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Kayenta Formation (1)
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Navajo Sandstone (2)
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Statfjord Formation (1)
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Triassic
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Fremouw Formation (1)
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Lower Triassic
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Permian-Triassic boundary (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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Mercia Mudstone (1)
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metal ores
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gold ores (2)
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lead ores (1)
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lead-zinc deposits (1)
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zinc ores (1)
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metals
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alkali metals
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potassium (1)
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alkaline earth metals
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beryllium
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Be-10 (1)
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calcium (1)
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magnesium (4)
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strontium
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Sr-87/Sr-86 (6)
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aluminum (1)
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copper (1)
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hafnium
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Hf-177/Hf-176 (1)
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iron
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ferric iron (1)
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lead (2)
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rare earths
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neodymium
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Nd-144/Nd-143 (2)
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silver (1)
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zinc (2)
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metamorphic rocks
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eclogite (1)
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metaigneous rocks (1)
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metaplutonic rocks (1)
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metasedimentary rocks (2)
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metavolcanic rocks (2)
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migmatites (1)
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schists
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blueschist (1)
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metamorphism (6)
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metasomatism (5)
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meteorites (1)
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mineral deposits, genesis (4)
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mineralogy (1)
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mining geology (1)
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Mohorovicic discontinuity (1)
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Moon (1)
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museums (1)
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nitrogen
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N-15/N-14 (1)
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noble gases
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helium
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He-3 (1)
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North America
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Appalachian Basin (3)
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Appalachians
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Northern Appalachians (3)
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Piedmont (1)
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Southern Appalachians (2)
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Basin and Range Province
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Great Basin (7)
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Canadian Shield (1)
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Coast plutonic complex (2)
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Grenville Front (1)
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Gulf Coastal Plain (5)
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Humber Zone (1)
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Intermontane Belt (2)
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Keweenawan Rift (1)
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Michigan Basin (3)
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Mississippi River basin (1)
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Niagara Falls (1)
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North American Cordillera (1)
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Okanogan Range (1)
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Rocky Mountain Trench (1)
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Rocky Mountains
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Canadian Rocky Mountains (2)
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Southern Rocky Mountains (2)
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U. S. Rocky Mountains
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Bighorn Mountains (1)
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San Juan Mountains (3)
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Sawatch Range (1)
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Saint Lawrence River (1)
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Slide Mountain Terrane (1)
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Western Canada Sedimentary Basin (5)
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Western Interior
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Western Interior Seaway (1)
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Yukon-Tanana Upland (1)
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Ocean Drilling Program
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Leg 184
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ODP Site 1148 (1)
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ocean waves (1)
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Oceania
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Kiribati (1)
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Melanesia
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New Caledonia (1)
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Micronesia (1)
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Polynesia
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Cook Islands (1)
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French Polynesia
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Society Islands
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Tahiti (1)
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Hawaii
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Mauna Loa (1)
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Molokai (1)
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Tonga (1)
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oil and gas fields (13)
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orogeny (11)
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oxygen
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O-16 (1)
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O-17/O-16 (2)
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O-18/O-16 (14)
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Pacific Coast (2)
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Pacific Ocean
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East Pacific
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Southeast Pacific (1)
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Equatorial Pacific (1)
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North Pacific
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Northwest Pacific
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South China Sea (1)
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Yellow Sea
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Bohai Sea
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Bohai Bay (1)
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South Pacific
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Southeast Pacific (1)
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Southwest Pacific
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Coral Sea
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Great Barrier Reef (1)
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West Pacific
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Northwest Pacific
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South China Sea (1)
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Yellow Sea
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Bohai Sea
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Bohai Bay (1)
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Southwest Pacific
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Coral Sea
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Great Barrier Reef (1)
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paleoclimatology (4)
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paleoecology (7)
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paleogeography (11)
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paleomagnetism (7)
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paleontology (2)
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Paleozoic
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Cambrian
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Lower Cambrian
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Gog Group (1)
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Middle Cambrian (1)
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Upper Cambrian
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Eau Claire Formation (6)
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Furongian (1)
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Mount Simon Sandstone (11)
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Carboniferous
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Jackfork Group (1)
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Mississippian
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Lower Mississippian
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Kinderhookian
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Banff Formation (1)
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Upper Mississippian
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Fayetteville Formation (1)
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Pennsylvanian
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Lower Pennsylvanian
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Caseyville Formation (1)
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Middle Pennsylvanian
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Atokan
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Atoka Formation (1)
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Carbondale Formation (1)
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Moscovian (1)
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Upper Carboniferous (1)
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Chattanooga Shale (1)
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Devonian
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Beaverhill Lake Group (1)
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Guilmette Formation (1)
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Lower Devonian
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Emsian (2)
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Littleton Formation (1)
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Middle Devonian
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Givetian (1)
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Prairie Evaporite (1)
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Winnipegosis Formation (1)
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Swan Hills Formation (2)
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Upper Devonian
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Famennian (1)
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Frasnian (2)
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Nisku Formation (1)
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Palliser Formation (1)
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Waterways Formation (1)
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Exshaw Formation (1)
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Knox Group (1)
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lower Paleozoic (1)
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New Albany Shale (3)
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Ordovician
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Lower Ordovician
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Beekmantown Group (1)
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Prairie du Chien Group (1)
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Middle Ordovician
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Black River Group (1)
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Chazy Group (1)
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Deicke Bentonite Bed (1)
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Galena Dolomite (1)
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Millbrig Bentonite Bed (1)
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Saint Peter Sandstone (1)
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Trenton Group (3)
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Upper Ordovician
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Maquoketa Formation (4)
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Queenston Shale (1)
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Trentonian (2)
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Utica Shale (1)
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Permian
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Lyons Sandstone (1)
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Upper Permian
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Permian-Triassic boundary (1)
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Zechstein (1)
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Rangeley Formation (1)
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Silurian
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Lockport Formation (1)
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Lower Silurian
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