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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
-
Africa
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Central Africa
-
Burundi (1)
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Congo Democratic Republic (1)
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East Africa
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Tanzania (2)
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East African Lakes
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Lake Tanganyika (1)
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Gregory Rift (1)
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Limpopo Basin (1)
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Limpopo Belt (1)
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Southern Africa
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South Africa
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Bushveld Complex (1)
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Eastern Cape Province South Africa
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Cape Town South Africa (1)
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Gauteng South Africa
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Johannesburg South Africa (1)
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KwaZulu-Natal South Africa
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Durban South Africa (1)
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Transvaal region (3)
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Western Cape Province South Africa (1)
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Zimbabwe (1)
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Altiplano (1)
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Antarctica
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Victoria Land (1)
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Arctic region
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Greenland
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East Greenland (1)
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Kangerlussuaq (1)
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West Greenland (1)
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Svalbard
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Spitsbergen
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Spitsbergen Island
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Brogger Peninsula (1)
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Asia
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Arabian Peninsula
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Oman (1)
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Saudi Arabia (1)
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United Arab Emirates
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Abu Dhabi (1)
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Far East
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China
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Gansu China
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Linxia Basin (1)
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Xinjiang China
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Japan
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Honshu
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Kyushu (1)
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Korea
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South Korea
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Philippine Islands
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Himalayas (1)
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Indian Peninsula
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India
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Middle East
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Atlantic Ocean
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North Atlantic
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Gulf of Mexico
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North Sea
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East Shetland Basin (1)
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Atlantic Ocean Islands (1)
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Australasia
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Australia
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New England Range (1)
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Northparkes Mine (1)
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Queensland Australia
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Victoria Australia
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Western Australia
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Norseman-Wiluna Belt (1)
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Yilgarn Craton (1)
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New Zealand
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Te Aroha New Zealand (1)
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Papua New Guinea (1)
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Avalon Zone (1)
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Cache Creek Terrane (1)
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Caledonides (1)
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Canada
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Amisk Lake (1)
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Arctic Archipelago (4)
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Eastern Canada
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Maritime Provinces
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New Brunswick (2)
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Nova Scotia
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Cape Breton Island (1)
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Gays River Deposit (1)
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Minas Basin (1)
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Yarmouth County Nova Scotia
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Meguma Terrane (2)
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Ontario
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Dryden Ontario (1)
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Kenora District Ontario (1)
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Quebec
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Horne Mine (1)
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Noranda Quebec (2)
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Temiscamingue County Quebec
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Nunavut
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Devon Island (1)
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Ellesmere Island (1)
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Haughton impact structure (1)
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Sverdrup Islands
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Queen Elizabeth Islands
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Sverdrup Islands
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Ungava (1)
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Western Canada
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Alberta
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British Columbia
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Canadian Cordillera (8)
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Manitoba (3)
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Northwest Territories
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Saskatchewan (5)
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Central America
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Coast Ranges (3)
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Commonwealth of Independent States
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Europe
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Alps
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Swiss Alps
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Western Alps
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Central Europe
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Germany
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Hungary (1)
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Switzerland
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Graubunden Switzerland
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Swiss Alps
-
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Valais Switzerland (1)
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-
-
Pannonian Basin
-
Slovakian Pannonian Basin (1)
-
-
Southern Europe
-
Bulgaria
-
Bulgarian Rhodope Mountains (1)
-
Plovdiv Bulgaria
-
Madan Bulgaria (1)
-
-
-
Greece
-
Greek Aegean Islands
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Cyclades
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Milos (1)
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Iberian Peninsula
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Iberian pyrite belt (1)
-
Portugal
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Algarve (1)
-
-
Spain
-
Andalusia Spain (1)
-
-
-
Italy
-
Campania Italy
-
Naples Italy (1)
-
Phlegraean Fields (1)
-
-
Emilia-Romagna Italy (1)
-
Piemonte Italy
-
Dora Maira Massif (1)
-
-
Po Valley (2)
-
Sicily Italy (2)
-
-
Rhodope Mountains
-
Bulgarian Rhodope Mountains (1)
-
-
Romania (1)
-
-
Western Europe
-
Cottian Alps
-
Dora Maira Massif (1)
-
-
France
-
Beauvoir Granite (1)
-
Central Massif (2)
-
Indre France (1)
-
-
Iceland (2)
-
Ireland
-
Galway Ireland (1)
-
-
Scandinavia
-
Norway
-
Oslo Graben (2)
-
Vestfold Norway
-
Larvik Norway (1)
-
-
-
Sweden
-
Dalarna Sweden
-
Siljan (1)
-
Siljan Ring (1)
-
-
-
-
United Kingdom
-
Great Britain
-
England
-
Kent England (1)
-
London Basin (2)
-
-
Scotland
-
Hebrides
-
Inner Hebrides
-
Isle of Skye (1)
-
-
-
Highland region Scotland
-
Inverness-shire Scotland
-
Isle of Skye (1)
-
-
-
Moine thrust zone (1)
-
-
Wales
-
Gwynedd Wales
-
Harlech Dome (1)
-
-
-
-
Northern Ireland (1)
-
-
-
-
Front Range (1)
-
Grand Canyon (1)
-
Green Canyon (1)
-
Indian Ocean
-
Arabian Sea
-
Persian Gulf (1)
-
-
Bengal Fan (1)
-
-
Indian Ocean Islands
-
Kerguelen Islands (1)
-
-
Lake George (1)
-
Mediterranean region
-
Aegean Islands
-
Greek Aegean Islands
-
Cyclades
-
Milos (1)
-
-
-
-
-
Mediterranean Sea
-
West Mediterranean
-
Tyrrhenian Sea (1)
-
-
-
Mexico
-
Baja California (1)
-
Colima Mexico (1)
-
Jalisco Mexico (1)
-
Queretaro Mexico (1)
-
Trans-Mexican volcanic belt (1)
-
Zacatecas Mexico (1)
-
-
Middle Valley (1)
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
Carolina slate belt (1)
-
Northern Appalachians (1)
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Piedmont (1)
-
Southern Appalachians (1)
-
-
Basin and Range Province
-
Great Basin (4)
-
-
Canadian Shield
-
Churchill Province
-
Cape Smith fold belt (1)
-
-
Flin Flon Belt (1)
-
Superior Province
-
Abitibi Belt (4)
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Kapuskasing Zone (1)
-
Michipicoten Belt (1)
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Wawa Belt (1)
-
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Great Lakes region (1)
-
Great Plains
-
Southern Great Plains (1)
-
-
Michigan Basin (3)
-
North American Cordillera
-
Canadian Cordillera (8)
-
-
Ogilvie Mountains (1)
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Okanagan Valley (1)
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Omineca Belt (2)
-
Rocky Mountains
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Canadian Rocky Mountains (2)
-
U. S. Rocky Mountains
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San Juan Mountains (3)
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Wind River Range (1)
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-
Saint Lawrence Lowlands (1)
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Saint Lawrence Valley (1)
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Shuswap Complex (1)
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Western Canada Sedimentary Basin (1)
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Williston Basin (1)
-
-
North Island (1)
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Northern Hemisphere (1)
-
Oceania
-
Melanesia
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Fiji
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Viti Levu (1)
-
-
-
-
Pacific Ocean
-
East Pacific
-
Northeast Pacific
-
Juan de Fuca Ridge (1)
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-
-
North Pacific
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Northeast Pacific
-
Juan de Fuca Ridge (1)
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-
-
Pacific region
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Circum-Pacific region (1)
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Pasco Basin (2)
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Pinon Range (1)
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Pioneer Mountains (1)
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polar regions (1)
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Potiguar Basin (1)
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Puna (1)
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Sacramento Basin (1)
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Sacramento Valley (2)
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San Joaquin Basin (1)
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Santa Catalina Island (1)
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Sierra Nevada (4)
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South America
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Andes (3)
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Argentina
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Bolivia (3)
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Brazil
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Chile
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Southern Ocean
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Ross Sea (1)
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United States
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Alaska
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Arizona
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Maricopa County Arizona (1)
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California
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Idaho
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Michigan
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Missouri
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Montana
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New Mexico (2)
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New York
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-
North Carolina
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Ohio (1)
-
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Tennessee
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Polk County Tennessee
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Texas
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Taylor County Texas (1)
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Texas Panhandle (1)
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-
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U. S. Rocky Mountains
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Wind River Range (1)
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Utah
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Drum Mountains (1)
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Garfield County Utah (1)
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Juab County Utah (1)
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Millard County Utah (1)
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Piute County Utah (1)
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Salt Lake County Utah
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Tintic mining district (1)
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Virginia
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Washington
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West Virginia
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Greenbrier County West Virginia (1)
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Western U.S. (1)
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Wisconsin
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Forest County Wisconsin (1)
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Wyoming
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commodities
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brines (19)
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energy sources (1)
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evaporite deposits (1)
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gems (3)
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geothermal energy (5)
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glass materials (1)
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magnesite deposits (1)
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metal ores
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base metals (7)
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bismuth ores (1)
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copper ores (23)
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polymetallic ores (16)
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water resources (3)
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elements, isotopes
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carbon
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chemical ratios (4)
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hydrogen
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Sr-87/Sr-86 (24)
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metals
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protactinium
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thorium
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uranium
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alkali metals
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cesium (1)
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lithium
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rubidium
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Rb-87/Sr-86 (1)
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sodium (5)
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alkaline earth metals
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calcium (1)
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magnesium (2)
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strontium
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Rb-87/Sr-86 (1)
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Sr-87 (1)
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Sr-87/Sr-86 (24)
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aluminum
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Al-27 (1)
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arsenic (1)
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lead
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Pb-208/Pb-204 (1)
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platinum group
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platinum (1)
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precious metals (3)
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rare earths
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neodymium
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Nd-144/Nd-143 (6)
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Sm-147/Nd-144 (1)
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samarium
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Sm-147/Nd-144 (1)
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tantalum (3)
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tungsten (2)
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zinc (2)
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nitrogen
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N-15 (2)
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N-15/N-14 (8)
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noble gases
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argon
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Ar-40/Ar-39 (1)
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helium
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He-4/He-3 (3)
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neon
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Ne-22/Ne-20 (1)
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-
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oxygen
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O-16 (1)
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O-17/O-16 (1)
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O-18 (15)
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O-18/O-16 (238)
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sulfur
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S-34/S-32 (46)
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tellurium (1)
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fossils
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bacteria (1)
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Chordata
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Vertebrata
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Tetrapoda
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Aves
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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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Bison (1)
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Chiroptera (1)
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Invertebrata
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Arthropoda
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Insecta
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Exopterygota
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Mollusca
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Vermes (1)
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microfossils (1)
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Plantae
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algae
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diatoms (1)
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Spermatophyta
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Gymnospermae
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Coniferales
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Taxodiaceae
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Metasequoia (1)
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-
-
-
-
-
-
geochronology methods
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Ar/Ar (7)
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K/Ar (11)
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paleomagnetism (2)
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Rb/Sr (5)
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geologic age
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Cenozoic
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Quaternary
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Pleistocene
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Wisconsinan (2)
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-
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Siwalik System (1)
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Tertiary
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lower Tertiary (2)
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middle Tertiary (2)
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Neogene
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upper Miocene
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Messinian (2)
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Pliocene (1)
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Paleogene
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Chadron Formation (1)
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Eocene
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Aycross Formation (1)
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upper Eocene (1)
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Oligocene (5)
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Paleocene
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upper Paleocene
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Thanetian (1)
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-
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White River Group (1)
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-
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Tulare Formation (1)
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upper Cenozoic (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (1)
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Aptian (1)
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Clearwater Formation (1)
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Upper Cretaceous (6)
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Jurassic
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Lower Jurassic (1)
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Middle Jurassic
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Bajocian
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Brent Group (1)
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-
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Upper Jurassic
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Morrison Formation (1)
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Smackover Formation (1)
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-
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Triassic
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Mole Granite (1)
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Upper Triassic
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Carnian
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Ischigualasto Formation (1)
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Dockum Group (1)
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-
-
upper Mesozoic (1)
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Paleozoic
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Cambrian
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Upper Cambrian
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Furongian (1)
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-
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Carboniferous
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Huanglong Formation (1)
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Lower Carboniferous
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Dinantian (2)
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Mississippian
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Lower Mississippian
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Tournaisian (1)
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Madison Group (1)
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Middle Mississippian
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Visean (2)
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Upper Mississippian
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Meramecian
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Sainte Genevieve Limestone (1)
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-
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Windsor Group (1)
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Pennsylvanian
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Strawn Series (1)
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-
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Devonian
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Middle Devonian
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Balaklala Rhyolite (1)
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Copley Greenstone (1)
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-
Upper Devonian
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Nisku Formation (1)
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-
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Horton Group (1)
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lower Paleozoic (1)
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Ordovician
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Lower Ordovician
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Beekmantown Group (1)
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Middle Ordovician
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Galena Dolomite (1)
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Trenton Group (1)
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Upper Ordovician
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Maquoketa Formation (1)
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Red River Formation (1)
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Trentonian (1)
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-
-
Permian
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Lower Permian
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Leman Sandstone Formation (1)
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Rotliegendes (1)
-
-
Silurian
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Upper Silurian
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Salina Group (1)
-
-
-
upper Paleozoic
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Antrim Shale (1)
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-
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Precambrian
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Archean
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Amisk Group (1)
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Aravalli System (1)
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Timiskaming Group (1)
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Cuddapah System (1)
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Nipissing Diabase (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic (2)
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Paleoproterozoic
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Urquhart Shale (3)
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-
-
-
-
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igneous rocks
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igneous rocks
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granophyre (1)
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kimberlite (1)
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picrite (1)
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plutonic rocks
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anorthosite (2)
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diabase (1)
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diorites (1)
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gabbros
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alkali gabbros (1)
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granites
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aplite (1)
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microgranite (1)
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two-mica granite (1)
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granodiorites (2)
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lamprophyres
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minette (1)
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monzodiorite (1)
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monzonites (1)
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pegmatite (4)
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quartz monzonite (4)
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syenites
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albitite (1)
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ultramafics
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peridotites
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harzburgite (1)
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lherzolite (1)
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pyroxenite
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clinopyroxenite (2)
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-
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porphyry (3)
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volcanic rocks
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andesites (1)
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basalts
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alkali basalts
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spilite (3)
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trachybasalts (1)
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dacites (1)
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glasses
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obsidian (2)
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pitchstone (1)
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melilitite (1)
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pyroclastics
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green tuff (1)
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ignimbrite (2)
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tuff (2)
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rhyolites (3)
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trachyandesites (1)
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trachytes (1)
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-
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ophiolite (1)
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volcanic ash (1)
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metamorphic rocks
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K-bentonite (1)
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metamorphic rocks
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eclogite (1)
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gneisses
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orthogneiss (1)
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paragneiss (1)
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granulites (2)
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impactites
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impact breccia (1)
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jadeitite (1)
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listwanite (1)
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marbles
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ophicalcite (1)
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-
metaigneous rocks
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meta-anorthosite (1)
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metadacite (1)
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metagabbro (1)
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metagranite (1)
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serpentinite (2)
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metaplutonic rocks (1)
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metasedimentary rocks
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metapelite (2)
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paragneiss (1)
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metasomatic rocks
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greisen (2)
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rodingite (1)
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serpentinite (2)
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skarn (11)
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metavolcanic rocks (2)
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mylonites (2)
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quartzites (2)
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schists
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chlorite schist (1)
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greenstone (5)
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slates (1)
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ophiolite (1)
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turbidite (1)
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meteorites
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meteorites
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micrometeorites (1)
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minerals
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alloys
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electrum (1)
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arsenates
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scorodite (1)
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arsenides (1)
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borates
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borax (1)
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carbonates
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ankerite (1)
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calcite (11)
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dolomite (3)
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gaylussite (1)
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magnesite (1)
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rhodochrosite (1)
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halides
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chlorides
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halite (5)
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fluorides
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fluorite (1)
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-
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hydrates (1)
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K-bentonite (1)
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minerals (24)
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molybdates (1)
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organic minerals
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amber (1)
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oxides
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aluminum oxides (1)
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boehmite (1)
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brucite (2)
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cassiterite (2)
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iron oxides (1)
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rutile (1)
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spinel (1)
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phosphates
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apatite (4)
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fluorapatite (1)
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hydroxylapatite (1)
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platinum minerals (1)
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silicates
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chain silicates
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amphibole group
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clinoamphibole
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actinolite (3)
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arfvedsonite (1)
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hastingsite (2)
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hornblende (2)
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kaersutite (3)
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pargasite (2)
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tremolite (1)
-
-
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prehnite (1)
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pyroxene group
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clinopyroxene
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diopside (3)
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spodumene (1)
-
-
orthopyroxene
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enstatite (1)
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ferrosilite (2)
-
-
-
-
framework silicates
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feldspar group
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alkali feldspar
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K-feldspar (3)
-
-
plagioclase
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albite (2)
-
-
-
scapolite group (1)
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silica minerals
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amethyst (1)
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chalcedony (1)
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opal
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opal-A (1)
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opal-CT (1)
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quartz (23)
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zeolite group
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analcime (2)
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laumontite (1)
-
-
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orthosilicates
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nesosilicates
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garnet group
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andradite (1)
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grossular (2)
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pyrope (1)
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olivine group
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fayalite (2)
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olivine (1)
-
-
-
sorosilicates
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epidote group
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epidote (1)
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lawsonite (1)
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-
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ring silicates
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beryl (1)
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emerald (2)
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tourmaline group
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dravite (1)
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foitite (1)
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schorl (1)
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uvite (1)
-
-
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sheet silicates
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chlorite group
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chlorite (3)
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sudoite (1)
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clay minerals
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dickite (2)
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halloysite (1)
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kaolinite (14)
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montmorillonite (2)
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smectite (11)
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illite (11)
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magadiite (1)
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mica group
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biotite (6)
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glauconite (1)
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muscovite (8)
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phengite (1)
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phlogopite (3)
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palygorskite (1)
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pyrophyllite (1)
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sericite (1)
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serpentine group
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antigorite (1)
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berthierine (1)
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chrysotile (2)
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lizardite (1)
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talc (3)
-
-
-
sulfates
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alunite (2)
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anhydrite (1)
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epsomite (1)
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gypsum (4)
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jarosite (2)
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melanterite (1)
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thenardite (1)
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sulfides
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galena (1)
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molybdenite (2)
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sphalerite (2)
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stibnite (1)
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sulfosalts
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sulfantimonites
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tetrahedrite (1)
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-
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tellurides (1)
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tungstates
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scheelite (2)
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wolframite (3)
-
-
vanadates (1)
-
-
Primary terms
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absolute age (23)
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Africa
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Central Africa
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Burundi (1)
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Congo Democratic Republic (1)
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-
East Africa
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Tanzania (2)
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East African Lakes
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Lake Tanganyika (1)
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Gregory Rift (1)
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Limpopo Basin (1)
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Limpopo Belt (1)
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Southern Africa
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South Africa
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Bushveld Complex (1)
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Eastern Cape Province South Africa
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Cape Town South Africa (1)
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Gauteng South Africa
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Johannesburg South Africa (1)
-
-
KwaZulu-Natal South Africa
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Durban South Africa (1)
-
-
Transvaal region (3)
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Western Cape Province South Africa (1)
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Zimbabwe (1)
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-
-
Antarctica
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Victoria Land (1)
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-
Arctic region
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Greenland
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East Greenland (1)
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Fiskenaesset Greenland (1)
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Kangerlussuaq (1)
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West Greenland (1)
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Svalbard
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Spitsbergen
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Spitsbergen Island
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Brogger Peninsula (1)
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-
-
-
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asbestos deposits (1)
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Asia
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Arabian Peninsula
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Oman (1)
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Saudi Arabia (1)
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United Arab Emirates
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Abu Dhabi (1)
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-
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Far East
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China
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Gansu China
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Linxia Basin (1)
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Guangxi China (1)
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Hunan China (1)
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Jiangsu China (1)
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Xinjiang China
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Tarim Basin (1)
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-
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Japan
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Honshu
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Iwate Japan (1)
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Kyushu (1)
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Korea
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South Korea
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Kyongsang Basin (1)
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-
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Philippine Islands
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Luzon (1)
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Sino-Korean Platform (1)
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Himalayas (1)
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Indian Peninsula
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Ganga Basin (1)
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India
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Andhra Pradesh India (1)
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Jharkhand India
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Singhbhum India (1)
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Rajasthan India (1)
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West Bengal India (1)
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Yamuna River (1)
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Nepal (1)
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Pakistan (1)
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Lake Baikal (1)
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Middle East
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Israel (1)
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Turkey (3)
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Siwalik Range (1)
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Tibetan Plateau (2)
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-
Atlantic Ocean
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North Atlantic
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Gulf of Mexico
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Garden Banks (1)
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North Sea
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East Shetland Basin (1)
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-
-
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Atlantic Ocean Islands (1)
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atmosphere (2)
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Australasia
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Australia
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New South Wales Australia
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New England Range (1)
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Northparkes Mine (1)
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Queensland Australia
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Denison Trough (1)
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Mount Isa Australia (3)
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Tasmania Australia (1)
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Victoria Australia
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Gippsland Basin (1)
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-
Western Australia
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Norseman-Wiluna Belt (1)
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Yilgarn Craton (1)
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-
-
New Zealand
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Te Aroha New Zealand (1)
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-
Papua New Guinea (1)
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-
bacteria (1)
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barite deposits (3)
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bentonite deposits (2)
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bibliography (1)
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biogeography (1)
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bitumens (1)
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boron
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B-11/B-10 (2)
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brines (19)
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Canada
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Amisk Lake (1)
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Arctic Archipelago (4)
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Eastern Canada
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Maritime Provinces
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New Brunswick (2)
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Nova Scotia
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Cape Breton Island (1)
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Gays River Deposit (1)
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Minas Basin (1)
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Yarmouth County Nova Scotia
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Yarmouth Nova Scotia (1)
-
-
-
-
Meguma Terrane (2)
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Ontario
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Algoma District Ontario
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Wawa Ontario (1)
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Dryden Ontario (1)
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Gowganda Ontario (1)
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Kenora District Ontario (1)
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Lambton County Ontario (1)
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Sudbury Basin (1)
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Thunder Bay District Ontario (1)
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Timiskaming District Ontario
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Cobalt Ontario (1)
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Kirkland Lake Ontario (2)
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-
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Quebec
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Gaspe Peninsula (1)
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Horne Mine (1)
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Noranda Quebec (2)
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Temiscamingue County Quebec
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Rouyn Quebec (1)
-
-
-
-
Nunavut
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Devon Island (1)
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Ellesmere Island (1)
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Haughton impact structure (1)
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Sverdrup Islands
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Axel Heiberg Island (1)
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-
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Queen Elizabeth Islands
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Devon Island (1)
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Ellesmere Island (1)
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Parry Islands (1)
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Sverdrup Islands
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Axel Heiberg Island (1)
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Ungava (1)
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Western Canada
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Alberta
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Athabasca Oil Sands (1)
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Athabasca Basin (1)
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Athabasca District (2)
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British Columbia
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Fraser River delta (1)
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Mount Meager (1)
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Canadian Cordillera (8)
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Northwest Territories
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Great Bear Lake (1)
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Mackenzie Delta (1)
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Pine Point mining district (1)
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Tuktoyaktuk Peninsula (2)
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Saskatchewan (5)
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Yukon Territory
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Klondike (1)
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-
-
-
carbon
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C-13 (2)
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C-13/C-12 (101)
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C-14 (10)
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organic carbon (1)
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-
Cenozoic
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lower Cenozoic (1)
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Quaternary
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Holocene
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lower Holocene (2)
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upper Holocene (3)
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-
Pleistocene
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upper Pleistocene
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Weichselian
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upper Weichselian
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Younger Dryas (1)
-
-
-
Wisconsinan (2)
-
-
-
-
Siwalik System (1)
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Tertiary
-
Arikaree Group (1)
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lower Tertiary (2)
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middle Tertiary (2)
-
Neogene
-
Miocene
-
Columbia River Basalt Group (1)
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upper Miocene
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Messinian (2)
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Tortonian (1)
-
-
-
Pliocene (1)
-
-
Paleogene
-
Chadron Formation (1)
-
Eocene
-
lower Eocene (1)
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middle Eocene
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Aycross Formation (1)
-
-
upper Eocene (1)
-
-
Oligocene (5)
-
Paleocene
-
upper Paleocene
-
Thanetian (1)
-
-
-
White River Group (1)
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-
-
Tulare Formation (1)
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upper Cenozoic (1)
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Central America
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Costa Rica (1)
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El Salvador (2)
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Guatemala (1)
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chemical analysis (1)
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Chordata
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Vertebrata
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Tetrapoda
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Aves
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Neornithes (1)
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-
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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Bovidae
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Bison (1)
-
-
-
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Chiroptera (1)
-
-
-
-
-
-
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clay deposits (1)
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clay mineralogy (27)
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climate change (7)
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continental slope (1)
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core (2)
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crust (7)
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crystal chemistry (10)
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
deuterium
Using δD of methyl aromatics and oils to trace the reservoir charging characteristics of complex petroleum systems in Tarim Basin, northwestern China Available to Purchase
O- and H-isotope record of Cape Town rainfall from 1996 to 2022: the effect of increasing temperature, and the ‘water crisis’ of 2015 to 2018 Available to Purchase
Hydrogen occupation and hydrogen-induced volume expansion in Fe 0.9 Ni 0.1 D x at high P-T conditions Available to Purchase
5. NOBLE GASES IN WATER – THE COLLABORATION WITH EAWAG Available to Purchase
Mantellic degassing of helium in an extensional active tectonic setting at the front of a magmatic arc (central Mexico) Open Access
Comparison of Pretreatment Methods for Organic-matter Removal and their Effects on the Hydrogen Isotope (δ 2 H) Composition of Kaolinite Available to Purchase
Future Outlook for Applications of Biomarkers and Isotopes in Organic Geochemistry Available to Purchase
Enhanced precipitation in the Gulf of Mexico during the Eocene–Oligocene transition driven by interhemispherical temperature asymmetry Available to Purchase
Hydrogen diffusion mechanisms in quartz: insights from H–Li, 2 H–H and 2 H–H–Li exchange experiments Open Access
Tracing Organic-Inorganic Interactions by Light Stable Isotopes (H, Li, B, O) of an Oil-Bearing Shale and its Clay Fraction During Hydrous Pyrolysis Available to Purchase
Oxygen and hydrogen isotopic composition of tap waters in France Available to Purchase
Abstract The isotopic compositions of oxygen ( δ 18 O) and hydrogen ( δ 2 H) are widely used to locate the geographical origin of biological remains or manufactured products. In this paper, we analyse the distributions of δ 18 O and δ 2 H in tap waters sampled across France, and in precipitation interpolated with the Online Isotopes in Precipitation Calculator and modelled with the isotope-enabled ECHAM6-wiso model. Our aim is to provide isoscapes usable in archaeology and forensics and evaluate whether the modelled data could be surrogates for measured ones. The δ 18 O and δ 2 H in the 396 tap waters sampled varied spatially within a range of 10‰ and 77‰, respectively. Their consistent distributions followed rules summarized by the effects of altitude and distance from the coast. Their variations along the year were small. Therefore, the database provides a solid reference for δ 18 O and δ 2 H of the water supply system at the regional scale. The areas with the most uncommon oxygen and hydrogen isotopic compositions (Atlantic coast south of Brittany and the highest elevations in the Alps) are the most accurately traceable areas in provenancing studies. The isotopic compositions of modelled precipitation have the same spatial distributions but different absolute values from those of tap waters. Therefore, our results favour the use of statistical isoscapes rather than general circulation model-based isoscapes in provenancing studies.
Time series analysis of the δ 2 H, δ 18 O and d excess values in correlation with monthly temperature, relative humidity and precipitation in Râmnicu Vâlcea, Romania: 2012–2018 Available to Purchase
Abstract To investigate the influence of local climate and transboundary circulation of moisture on the stable isotope of precipitation in Ramnicu Valcea, Romania, monthly values of δ 2 H, δ 18 O, deuterium excess (d excess ), temperature, relative humidity and precipitation were determined between January 2012 and December 2018. Monthly analysis showed differences in d excess varying between 24.2‰ (October 2015) and −23.7‰ (July 2013) with a multi-annual average of 6.1 ± 5.9‰, suggesting an Atlantic origin of moisture with episodic Mediterranean transport. Also a significant correlation between the North Atlantic Oscillation on the local temperature during winter season was noticed. The local meteoric water line (LMWL) for the entire period showed slope and intercept values similar to those for neighbouring localities with the same altitude. When the analysis was extended to summer (April–October) and winter (November–March) seasons, the LMWL slope and intercept were different, reflecting the summer–winter difference in temperatures and air circulation. The monthly values of all parameters formed equal-spaced time series whose detailed analysis confirmed at p < 0.01 that δ 2 H, δ 18 O, temperature and relative humidity show a well-evidenced one-year periodicity. In contrast, precipitation and d excess seasonality were almost unrecognizable, most probably owing to the reduced number of observations.
Understanding groundwater recharge processes in the Sutlej-Yamuna plain in NW India using an isotopic approach Available to Purchase
Abstract The isotopic composition of water has been widely used to investigate groundwater dynamics and recharge processes. In the present study, we have analysed the isotopic composition of groundwater, and of Sutlej River, Yamuna River, Ghaggar River and canal water from the Sutlej-Yamuna plain in NW India. We document spatial and depth-related variations in δ 18 O and deuterium excess (d-excess) values of groundwater in three zones based on topography and slope (zones I–III) from NE to SW. In Zone I, precipitation is the main recharge source for groundwater, as indicated by the isotopic values. We infer mixed recharge from precipitation and irrigation return flow in Zone II. Zone III records depleted δ 18 O and higher d-excess values in most of the groundwater samples, suggesting active recharge from canals. Further, we have calculated the contribution of canal water in groundwater using the hydrograph separation approach and have also quantified the uncertainty in its estimation. We note significant spatial and depth-related variability in the canal water contribution to groundwater recharge. The canal contribution is as high as 83 ± 10% at 18 m below ground level (bgl) in Zone III, and as low as 5 ± 3% at 43 m bgl in Zone II. The present study provides the baseline data on recharge processes in NW India, which is critical for developing sustainable management strategies for groundwater resources in this region.