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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Zambia (1)
-
-
Limpopo Belt (2)
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
-
Southern Africa
-
Kaapvaal Craton (1)
-
Namibia
-
Damara Belt (1)
-
Kaoko Belt (1)
-
-
Zimbabwe (1)
-
-
West Africa
-
Ghana (1)
-
-
Zimbabwe Craton (1)
-
-
Asia
-
Altai Mountains
-
Mongolian Altai (1)
-
-
Baikal region (1)
-
Far East
-
China
-
Jiangsu China (1)
-
-
Korea
-
South Korea (2)
-
-
Mongolia
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Mongolian Altai (1)
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Indian Peninsula
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India
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Jharkhand India (1)
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Jammu and Kashmir
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Ladakh (1)
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Kohistan (1)
-
-
Middle East
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Iran (1)
-
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Tuva Russian Federation
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Sangilen Mountains (1)
-
-
-
Atlantic Ocean
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North Atlantic
-
North Sea (2)
-
-
-
Australasia
-
New Zealand
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Southland New Zealand
-
Fiordland (2)
-
-
-
-
Black Hills (2)
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Caledonides (1)
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Canada
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Eastern Canada
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Newfoundland and Labrador
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Labrador (1)
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Newfoundland (1)
-
-
Ontario
-
Thunder Bay District Ontario
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Manitouwadge Ontario (1)
-
-
-
-
Western Canada
-
Manitoba
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Thompson nickel belt (1)
-
-
-
-
Commonwealth of Independent States
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Russian Federation
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Baikal region (1)
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Northern Urals (1)
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Tuva Russian Federation
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Sangilen Mountains (1)
-
-
-
Urals
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Northern Urals (1)
-
-
-
Europe
-
Alps
-
Eastern Alps
-
Austroalpine Zone (2)
-
-
Piedmont Alps
-
Dora Maira Massif (2)
-
-
Swiss Alps
-
Central Swiss Alps (2)
-
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Western Alps
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Cottian Alps
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Dora Maira Massif (2)
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-
-
Central Europe
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Austria (1)
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Germany
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Eifel (1)
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Rhineland-Palatinate Germany (1)
-
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Hungary
-
Transdanubia
-
Southern Transdanubia (1)
-
-
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Penninic Zone (1)
-
Switzerland
-
Basel Switzerland (1)
-
Graubunden Switzerland (1)
-
Swiss Alps
-
Central Swiss Alps (2)
-
-
-
-
Pyrenees
-
French Pyrenees (2)
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Rhenish Schiefergebirge
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Eifel (1)
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Rhine River (1)
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Southern Europe
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Greece
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Greek Aegean Islands
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Samos (2)
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Iberian Peninsula
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Spain
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Andalusia Spain
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Nevado-Filabride Complex (1)
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Galicia Spain
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La Coruna Spain
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Cabo Ortegal (1)
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Ordenes Complex (1)
-
-
-
-
Italy
-
Lombardy Italy (1)
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Piemonte Italy
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Dora Maira Massif (2)
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Slovenia (1)
-
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Variscides (2)
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Western Europe
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Belgium
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Brabant Belgium (1)
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Cottian Alps
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Dora Maira Massif (2)
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France
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Armorican Massif (1)
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Brittany (2)
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Finistere France (1)
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French Pyrenees (2)
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Hautes-Pyrenees France (1)
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Ireland
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Galway Ireland
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Connemara (1)
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Netherlands
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Zeeland Netherlands (1)
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Scandinavia
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Norway (1)
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United Kingdom
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Great Britain
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England (1)
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Scotland
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Aberdeenshire Scotland (1)
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Perthshire Scotland (1)
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Scottish Highlands (1)
-
-
-
-
-
-
Front Range (1)
-
Mediterranean region
-
Aegean Islands
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Greek Aegean Islands
-
Samos (2)
-
-
-
-
North America
-
Appalachians
-
Central Appalachians (1)
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Piedmont (1)
-
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Canadian Shield
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Flin Flon Belt (1)
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Superior Province (2)
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Rocky Mountains
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U. S. Rocky Mountains
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Sangre de Cristo Mountains (1)
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Sierra de San Luis (1)
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South America
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Argentina
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Pampean Mountains (1)
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Brazil
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Goias Brazil (1)
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Chile (1)
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United States
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Arizona
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Rincon Mountains (1)
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California
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San Bernardino County California
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Old Woman Mountains (1)
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Southern California (1)
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Colorado (1)
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Connecticut (1)
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Connecticut Valley (1)
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Delaware (1)
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Florida (1)
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Great Smoky Mountains (1)
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Idaho
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Cassia County Idaho (1)
-
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Maine
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Franklin County Maine (5)
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Kennebec County Maine (1)
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Oxford County Maine (1)
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Somerset County Maine (1)
-
-
Maryland
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Baltimore County Maryland
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Baltimore Maryland (1)
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-
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Massachusetts
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Franklin County Massachusetts (2)
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Hampden County Massachusetts (1)
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Hampshire County Massachusetts (1)
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Mojave Desert (1)
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New Hampshire (2)
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New Mexico
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Mora County New Mexico (1)
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Picuris Range (3)
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Rio Arriba County New Mexico (2)
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New York
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Adirondack Mountains (1)
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Saint Lawrence County New York (1)
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North Carolina (2)
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Sevier orogenic belt (2)
-
South Dakota
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Texas
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Llano County Texas (1)
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Llano Uplift (2)
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U. S. Rocky Mountains
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Utah
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Garfield County Utah (1)
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Piute County Utah (1)
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Sevier County Utah (1)
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Vermont (2)
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Virginia (2)
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Wyoming Province (1)
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Yavapai Province (1)
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-
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commodities
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gems (1)
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metal ores
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base metals (1)
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lead ores (1)
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mineral deposits, genesis (4)
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mineral exploration (1)
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mineral resources (1)
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-
elements, isotopes
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chemical ratios (1)
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hydrogen (5)
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isotope ratios (3)
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isotopes
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stable isotopes
-
Hf-177/Hf-176 (1)
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Nd-144/Nd-143 (1)
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O-18/O-16 (1)
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Lu/Hf (2)
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metals
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actinides
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thorium (1)
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uranium (1)
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alkali metals
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lithium (4)
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alkaline earth metals
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beryllium (3)
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calcium (3)
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magnesium (7)
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strontium (2)
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aluminum (1)
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chromium (2)
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cobalt (3)
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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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manganese (2)
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niobium (2)
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rare earths
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europium (1)
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neodymium
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Nd-144/Nd-143 (1)
-
-
yttrium (1)
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tantalum (2)
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titanium (2)
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zinc (6)
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zirconium (1)
-
-
oxygen
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O-18/O-16 (1)
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trace metals (1)
-
-
geochronology methods
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Ar/Ar (3)
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K/Ar (1)
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Lu/Hf (2)
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Pb/Pb (3)
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Pb/Th (1)
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Sm/Nd (2)
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Th/U (1)
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thermochronology (1)
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U/Pb (8)
-
-
geologic age
-
Cenozoic
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Quaternary (1)
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Tertiary
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Neogene
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Miocene (2)
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-
Paleogene
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Paleocene (1)
-
-
-
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Dalradian (3)
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Mesozoic
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Cretaceous
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Upper Cretaceous
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Raritan Formation (1)
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-
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Triassic (1)
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Paleozoic
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Cambrian
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Acadian (1)
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Middle Cambrian (1)
-
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Carboniferous
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Upper Carboniferous (2)
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Devonian
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Littleton Formation (2)
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Upper Devonian (2)
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lower Paleozoic (1)
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Ordovician
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Lower Ordovician (1)
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Middle Ordovician
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Ammonoosuc Volcanics (1)
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Partridge Formation (1)
-
-
-
Permian (2)
-
Rangeley Formation (2)
-
Silurian
-
Perry Mountain Formation (1)
-
Sangerville Formation (1)
-
-
Silvretta Group (1)
-
-
Precambrian
-
Archean
-
Neoarchean (2)
-
-
Kisseynew Complex (1)
-
upper Precambrian
-
Proterozoic
-
Damara System (1)
-
Mesoproterozoic (1)
-
Neoproterozoic (4)
-
Ortega Group (2)
-
Paleoproterozoic (2)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
diorites
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quartz diorites (1)
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trondhjemite (1)
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-
gabbros (1)
-
granites
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alaskite (1)
-
-
monzodiorite (1)
-
pegmatite (5)
-
-
volcanic rocks
-
basalts
-
mid-ocean ridge basalts (1)
-
tholeiitic basalt (1)
-
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites
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orthoamphibolite (1)
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eclogite (5)
-
gneisses
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augen gneiss (1)
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biotite gneiss (2)
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paragneiss (1)
-
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granulites (3)
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hornfels (1)
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marbles (1)
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metaigneous rocks
-
metabasalt (1)
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metabasite (4)
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metagabbro (1)
-
-
metasedimentary rocks
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metagraywacke (1)
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metapelite (17)
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paragneiss (1)
-
-
metasomatic rocks (1)
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metavolcanic rocks (2)
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migmatites
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anatexite (1)
-
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quartzites (2)
-
schists
-
glaucophane schist (1)
-
greenschist (1)
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hornblende schist (1)
-
-
-
-
minerals
-
carbonates
-
hydromagnesite (1)
-
-
halides
-
chlorides
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eudialyte (1)
-
-
fluorides
-
topaz (1)
-
-
-
minerals (32)
-
oxides
-
brookite (1)
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cassiterite (1)
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chrysoberyl (1)
-
corundum (5)
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diaspore (2)
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gahnite (5)
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hercynite (2)
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hoegbomite (1)
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ilmenite (4)
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magnetite (1)
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nigerite (1)
-
niobates
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columbite (1)
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ixiolite (1)
-
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rutile (3)
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spinel (7)
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spinel group (2)
-
tantalates
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ixiolite (1)
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wodginite (1)
-
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zincite (1)
-
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phosphates
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monazite (7)
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xenotime (1)
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selenites (1)
-
silicates
-
aluminosilicates (3)
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borosilicates (1)
-
chain silicates
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aenigmatite group
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sapphirine (1)
-
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amphibole group
-
clinoamphibole
-
cummingtonite (1)
-
hornblende (3)
-
-
orthoamphibole
-
anthophyllite (1)
-
gedrite (2)
-
-
-
pyroxene group
-
clinopyroxene
-
omphacite (1)
-
titanaugite (1)
-
-
orthopyroxene
-
enstatite (1)
-
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (3)
-
microcline (1)
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microperthite (1)
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perthite (1)
-
sanidine (1)
-
-
plagioclase
-
albite (2)
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andesine (1)
-
oligoclase (1)
-
-
-
silica minerals
-
coesite (1)
-
quartz (9)
-
-
sodalite group
-
genthelvite (1)
-
-
zeolite group
-
natrolite (1)
-
-
-
magnesian silicates (1)
-
orthosilicates
-
nesosilicates
-
andalusite (9)
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chloritoid (11)
-
dumortierite (1)
-
garnet group
-
almandine (2)
-
pyrope (1)
-
-
grandidierite (1)
-
kyanite (28)
-
mullite (1)
-
olivine group (1)
-
phenakite group
-
willemite (1)
-
-
sillimanite (22)
-
staurolite (145)
-
titanite group
-
titanite (3)
-
-
topaz (1)
-
zircon group
-
zircon (11)
-
-
-
sorosilicates
-
axinite group (1)
-
epidote group
-
allanite (2)
-
clinozoisite (1)
-
epidote (7)
-
-
lawsonite (1)
-
melilite group
-
akermanite (1)
-
gehlenite (2)
-
melilite (1)
-
-
vesuvianite (1)
-
-
-
ring silicates
-
beryl (2)
-
cordierite (9)
-
eudialyte (1)
-
joaquinite (1)
-
tourmaline group (6)
-
-
sheet silicates
-
chlorite group
-
chlorite (7)
-
-
gillespite (1)
-
mica group
-
biotite (11)
-
muscovite (12)
-
paragonite (1)
-
phengite (4)
-
phlogopite (1)
-
-
stilpnomelane (1)
-
-
-
sulfates
-
jarosite (1)
-
-
sulfides
-
galena (1)
-
genthelvite (1)
-
sphalerite (1)
-
stibnite (1)
-
-
-
Primary terms
-
absolute age (12)
-
Africa
-
East Africa
-
Zambia (1)
-
-
Limpopo Belt (2)
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
-
Southern Africa
-
Kaapvaal Craton (1)
-
Namibia
-
Damara Belt (1)
-
Kaoko Belt (1)
-
-
Zimbabwe (1)
-
-
West Africa
-
Ghana (1)
-
-
Zimbabwe Craton (1)
-
-
Asia
-
Altai Mountains
-
Mongolian Altai (1)
-
-
Baikal region (1)
-
Far East
-
China
-
Jiangsu China (1)
-
-
Korea
-
South Korea (2)
-
-
Mongolia
-
Mongolian Altai (1)
-
-
-
Indian Peninsula
-
India
-
Jharkhand India (1)
-
-
Jammu and Kashmir
-
Ladakh (1)
-
-
Kohistan (1)
-
-
Middle East
-
Iran (1)
-
-
Tuva Russian Federation
-
Sangilen Mountains (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
North Sea (2)
-
-
-
Australasia
-
New Zealand
-
Southland New Zealand
-
Fiordland (2)
-
-
-
-
Canada
-
Eastern Canada
-
Newfoundland and Labrador
-
Labrador (1)
-
Newfoundland (1)
-
-
Ontario
-
Thunder Bay District Ontario
-
Manitouwadge Ontario (1)
-
-
-
-
Western Canada
-
Manitoba
-
Thompson nickel belt (1)
-
-
-
-
Cenozoic
-
Quaternary (1)
-
Tertiary
-
Neogene
-
Miocene (2)
-
-
Paleogene
-
Paleocene (1)
-
-
-
-
chemical analysis (5)
-
continental drift (1)
-
crust (3)
-
crystal chemistry (37)
-
crystal growth (10)
-
crystal structure (23)
-
crystallography (4)
-
data processing (3)
-
deformation (7)
-
diagenesis (1)
-
economic geology (5)
-
Europe
-
Alps
-
Eastern Alps
-
Austroalpine Zone (2)
-
-
Piedmont Alps
-
Dora Maira Massif (2)
-
-
Swiss Alps
-
Central Swiss Alps (2)
-
-
Western Alps
-
Cottian Alps
-
Dora Maira Massif (2)
-
-
-
-
Central Europe
-
Austria (1)
-
Germany
-
Eifel (1)
-
Rhineland-Palatinate Germany (1)
-
-
Hungary
-
Transdanubia
-
Southern Transdanubia (1)
-
-
-
Penninic Zone (1)
-
Switzerland
-
Basel Switzerland (1)
-
Graubunden Switzerland (1)
-
Swiss Alps
-
Central Swiss Alps (2)
-
-
-
-
Pyrenees
-
French Pyrenees (2)
-
-
Rhenish Schiefergebirge
-
Eifel (1)
-
-
Rhine River (1)
-
Southern Europe
-
Greece
-
Greek Aegean Islands
-
Samos (2)
-
-
-
Iberian Peninsula
-
Spain
-
Andalusia Spain
-
Nevado-Filabride Complex (1)
-
-
Galicia Spain
-
La Coruna Spain
-
Cabo Ortegal (1)
-
-
Ordenes Complex (1)
-
-
-
-
Italy
-
Lombardy Italy (1)
-
Piemonte Italy
-
Dora Maira Massif (2)
-
-
-
Slovenia (1)
-
-
Variscides (2)
-
Western Europe
-
Belgium
-
Brabant Belgium (1)
-
-
Cottian Alps
-
Dora Maira Massif (2)
-
-
France
-
Armorican Massif (1)
-
Brittany (2)
-
Finistere France (1)
-
French Pyrenees (2)
-
Hautes-Pyrenees France (1)
-
-
Ireland
-
Galway Ireland
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Connemara (1)
-
-
-
Netherlands
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Zeeland Netherlands (1)
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Scandinavia
-
Norway (1)
-
-
United Kingdom
-
Great Britain
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England (1)
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Scotland
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Aberdeenshire Scotland (1)
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Perthshire Scotland (1)
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Scottish Highlands (1)
-
-
-
-
-
-
faults (7)
-
folds (8)
-
foliation (7)
-
gems (1)
-
geochemistry (10)
-
geochronology (1)
-
heavy mineral deposits (1)
-
hydrogen (5)
-
igneous rocks
-
plutonic rocks
-
diorites
-
quartz diorites (1)
-
trondhjemite (1)
-
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staurolite
Major-element geochemistry of pelites
Stages of Formation of the South Altai Metamorphic Belt (Central Asia)
Anatectic Granitic Pegmatites from the Eastern Alps: A Case of Variable Rare Metal Enrichment During High-Grade Regional Metamorphism. III: Fluid Inclusions as Potential Indicators for Anatectic Pegmatite Parent Melt Formation
The influence of microscale lithological layering and fluid availability on the metamorphic development of garnet and zircon: insights into dissolution–reprecipitation processes
Metamorphism of the Buchan type-area, NE Scotland and its relation to the adjacent Barrovian domain
A High-Pressure Thermal Aureole of the Bayan-Kol Gabbro–Monzodiorite Intrusion (Western Sangilen, Southeastern Tuva): Evidence for Lower-Crust Mafic Magma Chambers
Partial melting and P-T evolution of eclogite-facies metapelitic migmatites from the Egere terrane (Central Hoggar, South Algeria)
Prograde polyphase regional metamorphism of pelitic rocks, NW of Jamshedpur, eastern India: constraints from textural relationship, pseudosection modelling and geothermobarometry
Structural interpretation of a new twin in staurolite from Coray, Brittany, France
Anatectic Granitic Pegmatites from the Eastern Alps: A Case of Variable Rare Metal Enrichment During High-Grade Regional Metamorphism. II: Pegmatite Staurolite As an Indicator of Anatectic Pegmatite Parent Melt Formation – A Field and Experimental Study
Workflow for analysis of compositional data in sedimentary petrology: provenance changes in sedimentary basins from spatio-temporal variation in heavy-mineral assemblages
The Cordierite-orthoamphibole Rocks of the Variscan Dome of Gavarnie-gÈdre-hÉas: the Gedrite of GÈdre (hautes PyrÉnÉes, France)
Chromium-rich kyanite, magnesiostaurolite and corundum in ultrahigh-pressure eclogites (examples from Pohorje Mountains, Slovenia and Tromsø Nappe, Norway)
The U–Pb age and Lu–Hf isotope composition of detrital zircon from metasedimentary rocks of the Onot greenstone belt (Sharyzhalgay uplift, southern Siberian craton)
Tetrahedrally coordinated Co 2+ in oxides and silicates: Effect of local environment on optical properties
Abstract Paleoproterozoic supracrustal rocks in the region near Big Thompson Canyon, northern Colorado, have long been recognized as a spectacularly exposed example of regionally zoned metamorphism, preserving an apparently complete sequence from biotite- to migmatite-zones. Due to its location and relatively easy access, the Big Thompson Metamorphic Suite has also provided a valuable field-based educational experience for universities and colleges all along the Front Range and from elsewhere. In addition to a number of other studies, the pioneering work of William Braddock and graduate students from the University of Colorado resulted in more than a dozen M.Sc. and Ph.D. theses from the 1960s to the 1990s. Despite the volume of ground-breaking science conducted on these rocks in the past, there remain a number of fundamental questions regarding the metamorphic history and overall tectonic significance of many of the observable features. Several lines of evidence suggest there is potential for a complex tectonometamorphic history that likely spans from ~1.8 to 1.4 Ga. These include: thermochronologic and geochronologic data supporting multiple thermal and magmatic episodes, structural evidence for multiple deformation events, multiple generations of typical Barrovian minerals (e.g., staurolite), and the widespread occurrence of minerals not commonly associated with a classic Barrovian sequence (e.g., andalusite, cordierite). One purpose of this fieldtrip is to foster new ideas and stimulate new research directions that will utilize the Big Thompson Metamorphic Suite, and the Colorado Rockies in general, as field laboratories for better understanding fundamental orogenic processes.