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GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Central Africa
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Gabon
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Oklo (1)
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East Africa
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Afar Depression (1)
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Eritrea (1)
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Ethiopian Rift (1)
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Lake Natron (1)
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Tanzania
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East African Lakes
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East African Rift (3)
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Atlas Mountains
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Morocco
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Nubian Shield (1)
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Barberton greenstone belt (12)
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Kaapvaal Craton (11)
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Zimbabwe
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Far East
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Atlantic Ocean
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Western Australia
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Humboldt County Nevada
-
Getchell Mine (1)
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Lander County Nevada (4)
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-
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Pershing County Nevada (2)
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Washoe County Nevada
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-
-
White Pine County Nevada (3)
-
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-
New Mexico
-
Colfax County New Mexico (1)
-
Datil-Mogollon volcanic field (4)
-
Dona Ana County New Mexico (2)
-
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-
Carlsbad Caverns (1)
-
Lechuguilla Cave (1)
-
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Grant County New Mexico (2)
-
Hidalgo County New Mexico (2)
-
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-
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-
Los Alamos County New Mexico
-
Los Alamos National Laboratory (2)
-
-
Luna County New Mexico (1)
-
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-
San Juan County New Mexico (2)
-
San Miguel County New Mexico (1)
-
Sandoval County New Mexico (1)
-
Santa Fe County New Mexico (3)
-
Socorro County New Mexico (1)
-
Taos County New Mexico
-
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-
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-
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-
-
New York
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-
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Steens Mountain (3)
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Jackson County Oregon (2)
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Texas
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Balcones fault zone (2)
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Webb County Texas (1)
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-
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Trans-Pecos (1)
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Western U.S. (28)
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polymetallic ores (18)
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rare earth deposits
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silver ores (56)
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-
mineral deposits, genesis (178)
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phosphate deposits (2)
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placers (8)
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ruby (1)
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-
-
elements, isotopes
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boron (1)
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carbon
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C-13 (3)
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C-13/C-12 (41)
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C-14 (17)
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organic carbon (2)
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chemical elements (1)
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chemical ratios (14)
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halogens
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chlorine
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Cl-36 (2)
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fluorine (3)
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hydrogen
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D/H (19)
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incompatible elements (1)
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isotope ratios (208)
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isotopes
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Al-26 (2)
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Ar-40/Ar-39 (6)
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Be-10 (4)
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C-14 (17)
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Cl-36 (2)
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Cs-137 (1)
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Pb-206/Pb-204 (33)
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Pb-207/Pb-204 (26)
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Pb-208/Pb-204 (26)
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Pb-210 (1)
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Ra-226 (1)
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Rb-87/Sr-86 (2)
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Sm-147/Nd-144 (7)
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Th-230 (1)
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Th-232/Th-230 (1)
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tritium (1)
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U-238 (1)
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U-238/U-234 (1)
-
-
stable isotopes
-
Ar-36 (1)
-
Ar-40 (1)
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Ar-40/Ar-39 (6)
-
C-13 (3)
-
C-13/C-12 (41)
-
D/H (19)
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deuterium (1)
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Fe-56/Fe-54 (1)
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He-3 (2)
-
Hf-177/Hf-176 (20)
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Li-6 (1)
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Li-7 (1)
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Li-7/Li-6 (1)
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Nd-144/Nd-143 (63)
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O-18 (1)
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O-18/O-16 (85)
-
Os-188/Os-187 (1)
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Pb-206/Pb-204 (33)
-
Pb-207/Pb-204 (26)
-
Pb-207/Pb-206 (6)
-
Pb-208/Pb-204 (26)
-
Pb-208/Pb-206 (4)
-
Rb-87/Sr-86 (2)
-
S-33 (1)
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S-33/S-32 (1)
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S-34 (1)
-
S-34/S-32 (27)
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Sm-147/Nd-144 (7)
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Sr-87/Sr-86 (72)
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-
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large-ion lithophile elements (2)
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Lu/Hf (7)
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metals
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actinides
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uranium
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alkali metals
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cesium
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Cs-137 (1)
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lithium
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Li-7 (1)
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Li-7/Li-6 (1)
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potassium (1)
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rubidium
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Rb-87/Sr-86 (2)
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sodium (2)
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alkaline earth metals
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barium (6)
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beryllium
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Be-10 (4)
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-
calcium
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Sr/Ca (1)
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-
magnesium (8)
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radium
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Ra-226 (1)
-
-
strontium
-
Rb-87/Sr-86 (2)
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Sr/Ca (1)
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Sr-87/Sr-86 (72)
-
-
-
aluminum
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Al-26 (2)
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chromium (2)
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copper (3)
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gold (8)
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hafnium
-
Hf-177/Hf-176 (20)
-
-
indium (1)
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iron
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Fe-56/Fe-54 (1)
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ferric iron (4)
-
ferrous iron (4)
-
-
lead
-
Pb-206/Pb-204 (33)
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Pb-207/Pb-204 (26)
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Pb-207/Pb-206 (6)
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Pb-208/Pb-204 (26)
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Pb-208/Pb-206 (4)
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Pb-210 (1)
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manganese (1)
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platinum group
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osmium
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Os-188/Os-187 (1)
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palladium ores (2)
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cerium (2)
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lutetium (2)
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neodymium
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Nd-144/Nd-143 (63)
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Sm-147/Nd-144 (7)
-
-
samarium
-
Sm-147/Nd-144 (7)
-
-
ytterbium (3)
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-
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silver (4)
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tantalum (1)
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thallium (2)
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tin (1)
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vanadium (1)
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-
nitrogen (5)
-
noble gases
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argon
-
Ar-36 (1)
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Ar-40 (1)
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Ar-40/Ar-39 (6)
-
-
helium
-
He-3 (2)
-
-
neon (1)
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radon (2)
-
-
oxygen
-
O-18 (1)
-
O-18/O-16 (85)
-
-
selenium (1)
-
silicon (3)
-
sulfur
-
S-33 (1)
-
S-33/S-32 (1)
-
S-34 (1)
-
S-34/S-32 (27)
-
-
tellurium (3)
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trace metals (4)
-
-
fossils
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Archaea (1)
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Chordata
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Vertebrata
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Pisces
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Osteichthyes
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-
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Tetrapoda
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Amphibia
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Caudata (1)
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-
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Aves (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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Tylopoda
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-
-
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Carnivora
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Fissipeda
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Canidae (1)
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Chiroptera (1)
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Edentata
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Lagomorpha (1)
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Perissodactyla
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Ceratomorpha
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Rhinocerotidae
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Rhinoceros (1)
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Hippomorpha
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Equidae (1)
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Primates
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Hominidae
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Australopithecinae
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Homo
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Homo erectus (1)
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-
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simians (1)
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Rodentia
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Castoridae (1)
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Myomorpha
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Arvicolidae (1)
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Sciuromorpha
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Sciuridae (1)
-
-
-
-
-
-
Reptilia
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Diapsida
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Ichthyosauria (1)
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Sauropterygia (1)
-
-
-
-
-
-
coprolites (1)
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cyanobacteria (2)
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eukaryotes (1)
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fossil man (1)
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Graptolithina
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Graptoloidea (1)
-
-
Hemichordata (1)
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ichnofossils (3)
-
Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (4)
-
-
Insecta
-
Pterygota
-
Neoptera
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Endopterygota
-
Hymenoptera (1)
-
-
-
-
-
-
Trilobitomorpha
-
Trilobita (1)
-
-
-
Brachiopoda (2)
-
Bryozoa (2)
-
Cnidaria
-
Anthozoa
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Zoantharia
-
Scleractinia (1)
-
-
-
-
Echinodermata
-
Crinozoa
-
Crinoidea (1)
-
-
-
Mollusca
-
Bivalvia
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Heterodonta
-
Rudistae (1)
-
-
Pterioida
-
Pteriina
-
Anthraconaia (1)
-
-
-
-
Cephalopoda
-
Ammonoidea
-
Ammonites (1)
-
-
Coleoidea
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Belemnoidea
-
Belemnitidae (1)
-
-
-
-
-
Protista
-
Foraminifera
-
Fusulinina
-
Fusulinidae (1)
-
-
Rotaliina
-
Globigerinacea
-
Globotruncanidae
-
Globotruncana (1)
-
-
-
Orbitoidacea
-
Orbitoididae (1)
-
-
-
-
Radiolaria (8)
-
-
-
microfossils
-
Conodonta (8)
-
Fusulinina
-
Fusulinidae (1)
-
-
-
palynomorphs
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acritarchs (1)
-
Dinoflagellata (2)
-
miospores
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pollen (11)
-
-
-
Plantae
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algae
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diatoms (7)
-
nannofossils (2)
-
-
Pteridophyta (2)
-
Spermatophyta
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Angiospermae
-
Dicotyledoneae
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Quercus (1)
-
Rosidae (1)
-
-
Monocotyledoneae
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Cyperaceae (1)
-
-
-
Gymnospermae
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Coniferales
-
Araucariaceae (1)
-
-
Glossopteridales
-
Gangamopteris (1)
-
Glossopteris
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Glossopteris flora (1)
-
-
-
-
-
-
problematic fossils (1)
-
Pterobranchia (1)
-
thallophytes (3)
-
-
geochronology methods
-
(U-Th)/He (19)
-
Ar/Ar (222)
-
exposure age (5)
-
fission-track dating (23)
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He/He (1)
-
hydration of glass (1)
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infrared stimulated luminescence (2)
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K/Ar (36)
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Lu/Hf (7)
-
Nd/Nd (2)
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optically stimulated luminescence (3)
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paleomagnetism (73)
-
Pb/Pb (7)
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racemization (1)
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radiation damage (1)
-
Rb/Sr (7)
-
Re/Os (12)
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Sm/Nd (16)
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Sr/Sr (1)
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tephrochronology (28)
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Th/U (8)
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thermochronology (34)
-
U/Pb (260)
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U/Th/Pb (5)
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uranium disequilibrium (3)
-
-
geologic age
-
Cenozoic
-
Blancan (1)
-
Glenns Ferry Formation (2)
-
middle Cenozoic (2)
-
Quaternary
-
Cordilleran ice sheet (2)
-
Holocene
-
Neoglacial (1)
-
upper Holocene (7)
-
-
Mazama Ash (1)
-
Pleistocene
-
Bandelier Tuff (5)
-
Bishop Tuff (13)
-
Irvingtonian (1)
-
Lake Lahontan (1)
-
Lake Missoula (1)
-
Loveland Loess (1)
-
lower Pleistocene
-
Jaramillo Subchron (1)
-
-
Matuyama Chron (2)
-
middle Pleistocene (2)
-
upper Pleistocene
-
Wisconsinan
-
upper Wisconsinan (1)
-
-
-
-
upper Quaternary
-
Brunhes Chron (2)
-
Bull Lake Glaciation (1)
-
Pinedale Glaciation (2)
-
-
-
Sierra Ladrones Formation (2)
-
Tertiary
-
Calipuy Group (1)
-
Challis Volcanics (9)
-
John Day Formation (4)
-
lower Tertiary
-
Taishu Group (1)
-
-
middle Tertiary (5)
-
Muddy Creek Formation (3)
-
Neogene
-
Bidahochi Formation (4)
-
Deschutes Formation (1)
-
Hemphillian (3)
-
Miocene
-
Ash Hollow Formation (1)
-
Clarendonian (2)
-
Columbia River Basalt Group (28)
-
Ellensburg Formation (1)
-
Grande Ronde Basalt (5)
-
lower Miocene (12)
-
middle Miocene (14)
-
Oakville Sandstone (1)
-
Paintbrush Tuff (1)
-
Peach Springs Tuff (3)
-
Picture Gorge Basalt (2)
-
Saddle Mountains Basalt (1)
-
Topopah Spring Member (2)
-
upper Miocene
-
Modelo Formation (1)
-
Puente Formation (1)
-
-
Valentine Formation (1)
-
Wanapum Basalt (1)
-
-
Ogallala Formation (1)
-
Pliocene
-
Gauss Chron (1)
-
Goliad Sand (1)
-
lower Pliocene (3)
-
upper Pliocene (3)
-
-
Ringold Formation (1)
-
Salt Lake Formation (2)
-
Tesuque Formation (1)
-
upper Neogene (2)
-
-
Paleogene
-
Calvert Bluff Formation (1)
-
Eocene
-
Absaroka Supergroup (1)
-
Bridger Formation (1)
-
Bridgerian (1)
-
Chuckanut Formation (1)
-
Chumstick Formation (3)
-
Clarno Formation (2)
-
Crescent Formation (2)
-
Green River Formation (4)
-
Lake Gosiute (1)
-
Lake Uinta (1)
-
lower Eocene
-
Wasatchian (1)
-
Willwood Formation (1)
-
Wind River Formation (2)
-
Ypresian (2)
-
-
middle Eocene
-
Aycross Formation (1)
-
Lutetian (2)
-
Tyee Formation (1)
-
-
Mirador Formation (1)
-
Ootsa Lake Group (2)
-
Swauk Formation (3)
-
Uintan (1)
-
upper Eocene
-
Cowlitz Formation (1)
-
Whitsett Formation (1)
-
-
Yamhill Formation (1)
-
-
lower Paleogene (4)
-
Oligocene
-
Fish Canyon Tuff (7)
-
Hemlock Conglomerate (1)
-
middle Oligocene (1)
-
upper Oligocene (3)
-
-
Orca Group (1)
-
Paleocene
-
lower Paleocene
-
K-T boundary (2)
-
-
Tullock Member (1)
-
upper Paleocene
-
Thanetian (1)
-
-
-
Paleocene-Eocene Thermal Maximum (1)
-
Renova Formation (1)
-
Sespe Formation (2)
-
Tyonek Formation (2)
-
Wasatch Formation (2)
-
White River Group (1)
-
Wilcox Group (1)
-
-
-
upper Cenozoic
-
Pico Formation (1)
-
-
Yakataga Formation (1)
-
-
Coal Measures (1)
-
Lake Bonneville (4)
-
Mesozoic
-
Antalya Complex (1)
-
Condrey Mountain Schist (3)
-
Cretaceous
-
Kuskokwim Group (2)
-
Lower Cretaceous
-
Albian (1)
-
Aptian (3)
-
Barremian (2)
-
Berriasian (1)
-
Christopher Formation (1)
-
Hauterivian (1)
-
Isachsen Formation (1)
-
Valanginian (2)
-
-
Mancos Shale (1)
-
Middle Cretaceous (4)
-
Upper Cretaceous
-
Campanian (3)
-
Cenomanian (3)
-
Gulfian
-
Austin Group (1)
-
-
Hell Creek Formation (1)
-
Hornbrook Formation (1)
-
Kanguk Formation (1)
-
K-T boundary (2)
-
Montana Group (1)
-
Niobrara Formation (2)
-
Senonian (2)
-
Tuolumne Intrusive Suite (3)
-
-
Valdez Group (1)
-
-
Franciscan Complex (5)
-
Great Valley Sequence (3)
-
Jurassic
-
Arapien Shale (1)
-
Aztec Sandstone (1)
-
Bonanza Group (1)
-
Carmel Formation (1)
-
Coast Range Ophiolite (3)
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (1)
-
middle Liassic (2)
-
Pliensbachian (2)
-
Sinemurian (1)
-
Talkeetna Formation (2)
-
Toarcian (2)
-
upper Liassic (2)
-
-
Middle Jurassic
-
Bajocian
-
Yakoun Group (1)
-
-
Bathonian (2)
-
Callovian (1)
-
Page Sandstone (1)
-
-
Smartville Complex (1)
-
Upper Jurassic
-
Bowser Lake Group (4)
-
Galice Formation (3)
-
Josephine Ophiolite (6)
-
Kimmeridgian (1)
-
Naknek Formation (3)
-
Oxfordian (3)
-
Portlandian (1)
-
Tithonian (1)
-
-
-
Kayenta Formation (1)
-
Kunga Group (2)
-
lower Mesozoic (4)
-
McHugh Complex (1)
-
Navajo Sandstone (1)
-
Orocopia Schist (2)
-
Triassic
-
Lower Triassic
-
Olenekian (1)
-
Permian-Triassic boundary (8)
-
-
Middle Triassic (9)
-
Moenkopi Formation (1)
-
Nicola Group (1)
-
Shublik Formation (1)
-
Upper Triassic
-
Carnian (2)
-
Chinle Formation (1)
-
Karmutsen Group (2)
-
Norian (4)
-
Rhaetian (1)
-
Sag River Sandstone (1)
-
Stuhini Group (1)
-
-
-
Yanshanian (1)
-
-
MIS 5 (1)
-
MIS 6 (1)
-
MIS 7 (1)
-
Paleozoic
-
Cambrian
-
Brigham Group (2)
-
Kanmantoo Group (1)
-
Lower Cambrian
-
Tommotian (1)
-
-
Middle Cambrian
-
Bright Angel Shale (1)
-
-
Mount Read Volcanics (3)
-
Tapeats Sandstone (1)
-
Upper Cambrian
-
Lamotte Sandstone (1)
-
-
-
Carboniferous
-
Chilliwack Group (1)
-
Lower Carboniferous
-
Asbian (1)
-
Dinantian (2)
-
-
Mississippian
-
Lower Mississippian
-
Kayak Shale (1)
-
Kinderhookian
-
Banff Formation (1)
-
-
Tournaisian (2)
-
-
Middle Mississippian
-
Visean (1)
-
-
Rampart Group (1)
-
Redwall Limestone (1)
-
Upper Mississippian (1)
-
-
Namurian (2)
-
Pennsylvanian
-
Lower Pennsylvanian (1)
-
Middle Pennsylvanian (1)
-
Upper Pennsylvanian
-
Gzhelian (1)
-
Kasimovian (1)
-
-
-
Upper Carboniferous
-
Stephanian (3)
-
Westphalian (4)
-
-
-
Devonian
-
Lower Devonian
-
Emsian (2)
-
Lochkovian (1)
-
Pragian (1)
-
Shap Granite (1)
-
-
Middle Devonian (1)
-
Old Red Sandstone (2)
-
Upper Devonian
-
Kanayut Conglomerate (1)
-
-
-
Earn Group (1)
-
Endicott Group (1)
-
Exshaw Formation (1)
-
Leinster Granite (1)
-
Lisburne Group (1)
-
lower Paleozoic
-
Chopawamsic Formation (1)
-
-
middle Paleozoic
-
Hillabee Chlorite Schist (2)
-
-
Ordovician
-
Lower Ordovician
-
Tremadocian (1)
-
-
Middle Ordovician (2)
-
Upper Ordovician
-
Caradocian
-
Borrowdale Volcanic Group (1)
-
-
Trentonian (1)
-
-
Valmy Formation (1)
-
-
Permian
-
Castile Formation (1)
-
Ecca Group (2)
-
Echooka Formation (1)
-
Guadalupian
-
Capitanian (1)
-
Roadian (1)
-
Wordian (1)
-
-
Longtan Formation (1)
-
Lower Permian
-
Cisuralian
-
Artinskian (1)
-
Asselian (1)
-
Kungurian (1)
-
-
-
Middle Permian (5)
-
Rotliegendes (1)
-
Toroweap Formation (1)
-
Upper Permian
-
Lopingian
-
Changhsingian (1)
-
Wuchiapingian (1)
-
-
Permian-Triassic boundary (8)
-
-
-
Shoo Fly Complex (1)
-
Silurian
-
Lower Silurian
-
Wenlock (1)
-
-
Upper Silurian (3)
-
-
Talladega Group (2)
-
upper Paleozoic
-
Dwyka Formation (1)
-
Kiaman Superchron (1)
-
Tunguska Series (1)
-
-
-
Phanerozoic (17)
-
Precambrian
-
Archean
-
Blake River Group (10)
-
Fig Tree Group (3)
-
Gilman Formation (2)
-
Mesoarchean (6)
-
Neoarchean (22)
-
Opemisca Group (1)
-
Paleoarchean
-
Hooggenoeg Formation (1)
-
-
Roy Group (1)
-
Timiskaming Group (3)
-
Warrawoona Group (3)
-
-
Brockman Iron Formation (1)
-
Chuar Group (2)
-
Fortescue Group (1)
-
Hadean (4)
-
North Shore Volcanics (3)
-
Onverwacht Group (3)
-
Osler Series (1)
-
Pahrump Series (1)
-
Pongola Supergroup (1)
-
Purcell System (1)
-
Transvaal Supergroup (4)
-
Uinta Mountain Group (1)
-
Unkar Group (1)
-
upper Precambrian
-
Proterozoic
-
Algonkian
-
Baraboo Quartzite (2)
-
-
Damara System (1)
-
Huronian
-
Onaping Formation (1)
-
-
Isan Orogeny (1)
-
Keweenawan
-
Portage Lake Lava Series (1)
-
-
Lewisian (1)
-
Mesoproterozoic
-
Belt Supergroup (8)
-
Missoula Group (2)
-
Ravalli Group (1)
-
Revett Quartzite (1)
-
-
Neoproterozoic
-
Cryogenian (4)
-
Ediacaran (4)
-
Sturtian (5)
-
Tonian (5)
-
Vendian (2)
-
-
Oronto Group (1)
-
Paleoproterozoic
-
Orosirian (2)
-
-
Pocatello Formation (1)
-
Pretoria Group (1)
-
Windermere System (2)
-
-
-
Ventersdorp Supergroup (1)
-
-
Vindhyan (1)
-
-
igneous rocks
-
extrusive rocks (3)
-
igneous rocks
-
carbonatites (6)
-
feldspathoid rocks (3)
-
granophyre (1)
-
hypabyssal rocks (4)
-
kimberlite (4)
-
peperite (3)
-
plutonic rocks
-
anorthosite (5)
-
diabase
-
tholeiitic dolerite (3)
-
-
diorites
-
diorite porphyry (1)
-
microdiorite (1)
-
plagiogranite (1)
-
quartz diorites (10)
-
tonalite (8)
-
trondhjemite (5)
-
-
gabbros
-
norite (4)
-
troctolite (1)
-
-
granites
-
alkali granites (2)
-
aplite (3)
-
A-type granites (3)
-
charnockite (1)
-
I-type granites (3)
-
leucogranite (3)
-
monzogranite (3)
-
rapakivi (1)
-
S-type granites (2)
-
-
granodiorites
-
granodiorite porphyry (1)
-
-
ijolite (2)
-
lamproite (7)
-
lamprophyres
-
minette (1)
-
-
monzodiorite (2)
-
monzonites
-
mangerite (1)
-
-
pegmatite (7)
-
quartz monzonite (3)
-
syenites
-
nepheline syenite (3)
-
quartz syenite (1)
-
-
ultramafics
-
chromitite (1)
-
hornblendite (1)
-
peridotites
-
dunite (3)
-
harzburgite (1)
-
-
pyroxenite
-
clinopyroxenite (2)
-
-
-
-
porphyry
-
vitrophyre (4)
-
-
volcanic rocks
-
adakites (6)
-
andesites
-
boninite (2)
-
-
basalts
-
alkali basalts
-
alkali olivine basalt (1)
-
hawaiite (1)
-
mugearite (1)
-
trachybasalts (1)
-
-
flood basalts (29)
-
mid-ocean ridge basalts (15)
-
ocean-island basalts (5)
-
shoshonite (3)
-
tholeiite (12)
-
tholeiitic basalt (5)
-
-
basanite (1)
-
dacites (32)
-
glasses
-
obsidian (6)
-
perlite (1)
-
pitchstone (1)
-
volcanic glass (11)
-
-
komatiite (13)
-
latite (3)
-
melilitite (1)
-
nephelinite (3)
-
phonolites (4)
-
pyroclastics
-
ash-flow tuff (26)
-
hyaloclastite (3)
-
ignimbrite (62)
-
pumice (20)
-
rhyolite tuff (11)
-
scoria (2)
-
tuff (105)
-
tuffite (1)
-
welded tuff (6)
-
-
rhyodacites (10)
-
rhyolites
-
comendite (1)
-
-
trachyandesites (6)
-
trachytes (5)
-
vitrophyre (4)
-
-
-
ophiolite (19)
-
volcanic ash (14)
-
wehrlite (1)
-
-
metamorphic rocks
-
K-bentonite (1)
-
metamorphic rocks
-
amphibolites (7)
-
cataclasites (4)
-
eclogite (5)
-
gneisses
-
granite gneiss (2)
-
orthogneiss (3)
-
paragneiss (1)
-
tonalite gneiss (1)
-
-
granulites (1)
-
marbles (3)
-
metaigneous rocks
-
metabasalt (4)
-
metabasite (3)
-
metadacite (1)
-
metadiabase (1)
-
metagabbro (1)
-
metagranite (2)
-
metaperidotite (2)
-
metarhyolite (2)
-
serpentinite (5)
-
-
metaplutonic rocks (3)
-
metasedimentary rocks
-
metaconglomerate (2)
-
metagraywacke (1)
-
metapelite (1)
-
metasandstone (1)
-
paragneiss (1)
-
shungite (1)
-
-
metasomatic rocks
-
greisen (1)
-
rodingite (1)
-
serpentinite (5)
-
skarn (11)
-
-
metavolcanic rocks (27)
-
migmatites (2)
-
mylonites
-
pseudotachylite (1)
-
ultramylonite (1)
-
-
phyllites (3)
-
phyllonites (1)
-
quartzites (7)
-
schists
-
black schists (1)
-
blueschist (5)
-
greenschist (1)
-
greenstone (5)
-
-
slates (2)
-
-
ophiolite (19)
-
turbidite (20)
-
-
meteorites
-
meteorites
-
stony meteorites
-
achondrites
-
Martian meteorites (1)
-
-
chondrites (1)
-
-
-
-
minerals
-
alloys
-
awaruite (1)
-
carbides
-
moissanite (1)
-
-
silicides (1)
-
-
arsenides
-
arsenopyrite (2)
-
sperrylite (1)
-
-
carbonates
-
calcite (7)
-
dawsonite (2)
-
dolomite (3)
-
magnesite (1)
-
siderite (2)
-
-
halides
-
chlorides
-
halite (3)
-
-
fluorides
-
fluorite (3)
-
topaz (3)
-
-
-
K-bentonite (1)
-
manganese minerals (1)
-
minerals (3)
-
native elements
-
diamond (4)
-
fullerene (1)
-
graphite (2)
-
-
oxides
-
aluminum oxides (1)
-
baddeleyite (2)
-
brannerite (1)
-
chrome spinel (1)
-
chromite (2)
-
chrysoberyl (1)
-
goethite (1)
-
hematite (10)
-
ilmenite (4)
-
iron oxides (11)
-
magnesium oxides (1)
-
magnetite (11)
-
perovskite (1)
-
priderite (1)
-
rutile (3)
-
sapphire (1)
-
specularite (1)
-
spinel (3)
-
titanium oxides (1)
-
titanomagnetite (1)
-
uraninite (2)
-
-
phosphates
-
apatite (27)
-
fluorapatite (2)
-
monazite (7)
-
xenotime (2)
-
-
platinum minerals (1)
-
selenides (1)
-
silicates
-
aluminosilicates (2)
-
asbestos (2)
-
chain silicates
-
amphibole group
-
clinoamphibole
-
hornblende (16)
-
kaersutite (1)
-
richterite (1)
-
-
-
prehnite (1)
-
pyroxene group
-
clinopyroxene
-
aegirine (2)
-
augite (1)
-
diopside (1)
-
-
orthopyroxene (2)
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
adularia (11)
-
celsian (1)
-
hyalophane (1)
-
K-feldspar (9)
-
sanidine (29)
-
-
barium feldspar
-
celsian (1)
-
hyalophane (1)
-
-
plagioclase
-
albite (2)
-
anorthite (1)
-
oligoclase (2)
-
-
-
leucite (1)
-
nepheline group
-
kalsilite (1)
-
nepheline (2)
-
-
scapolite group
-
scapolite (1)
-
-
silica minerals
-
agate (3)
-
chalcedony (4)
-
cristobalite (3)
-
jasper (1)
-
melanophlogite (1)
-
moganite (3)
-
opal
-
opal-A (2)
-
opal-CT (1)
-
-
quartz (34)
-
tridymite (1)
-
-
sodalite group
-
helvite (1)
-
-
zeolite group
-
analcime (7)
-
clinoptilolite (5)
-
epistilbite (1)
-
erionite (2)
-
garronite (1)
-
gmelinite (1)
-
heulandite (5)
-
laumontite (4)
-
mesolite (1)
-
mordenite (5)
-
natrolite (1)
-
stilbite (2)
-
-
-
orthosilicates
-
nesosilicates
-
garnet group
-
almandine (2)
-
andradite (1)
-
grossular (1)
-
-
olivine group
-
olivine (8)
-
peridot (1)
-
-
phenakite group
-
phenakite (1)
-
-
titanite group
-
titanite (8)
-
-
topaz (3)
-
zircon group
-
coffinite (1)
-
zircon (231)
-
-
-
sorosilicates
-
axinite group (1)
-
bertrandite (1)
-
chevkinite group
-
chevkinite (3)
-
perrierite (3)
-
-
epidote group
-
allanite (3)
-
epidote (4)
-
zoisite (1)
-
-
lawsonite (1)
-
pumpellyite group
-
pumpellyite (1)
-
-
-
-
ring silicates
-
aquamarine (1)
-
beryl (1)
-
emerald (1)
-
tourmaline group (4)
-
-
sheet silicates
-
chlorite group
-
chlorite (7)
-
-
clay minerals
-
beidellite (1)
-
kaolinite (6)
-
montmorillonite (6)
-
smectite (9)
-
-
illite (9)
-
mica group
-
biotite (18)
-
celadonite (1)
-
fuchsite (1)
-
muscovite (14)
-
phengite (1)
-
phlogopite (3)
-
-
palygorskite (2)
-
pyrophyllite (1)
-
sepiolite (2)
-
sericite (5)
-
serpentine group
-
antigorite (1)
-
berthierine (2)
-
lizardite (1)
-
serpentine (2)
-
-
talc (1)
-
-
-
sulfates
-
alunite (7)
-
anhydrite (2)
-
barite (3)
-
gypsum (2)
-
jarosite (1)
-
schwertmannite (1)
-
-
sulfides
-
argentite (1)
-
arsenopyrite (2)
-
bornite (1)
-
chalcopyrite (6)
-
cooperite (1)
-
copper sulfides (2)
-
galena (3)
-
helvite (1)
-
laurite (1)
-
marcasite (3)
-
molybdenite (4)
-
nickel sulfides (1)
-
orpiment (1)
-
pentlandite (1)
-
pyrite (10)
-
pyrrhotite (3)
-
realgar (1)
-
sphalerite (5)
-
stibnite (1)
-
tetradymite (1)
-
-
sulfosalts
-
sulfantimonites
-
freibergite (1)
-
-
sulfarsenates
-
enargite (1)
-
-
sulfarsenites
-
tennantite (2)
-
-
-
tellurides
-
altaite (1)
-
calaverite (1)
-
hessite (1)
-
sylvanite (1)
-
tetradymite (1)
-
-
tungstates
-
scheelite (2)
-
-
uranium minerals (1)
-
wehrlite (1)
-
-
Primary terms
-
absolute age (471)
-
Africa
-
Central Africa
-
Gabon
-
Oklo (1)
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North America
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Ocean Drilling Program
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Leg 104 (1)
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Leg 113
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ODP Site 690 (1)
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Leg 135
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ODP Site 840 (1)
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Leg 151 (1)
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Leg 152
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ODP Site 919 (1)
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Leg 159
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ODP Site 959 (1)
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Leg 162
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ODP Site 983 (1)
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ODP Site 984 (1)
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ODP Site 985 (1)
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Leg 170
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ODP Site 1039 (1)
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Leg 174AX (1)
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Leg 189
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ODP Site 1172 (1)
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ODP Site 907 (1)
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ocean floors (9)
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Oceania
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Pacific region
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Paleozoic
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Carboniferous
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Upper Carboniferous
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Stephanian (3)
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Devonian
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lower Paleozoic
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middle Paleozoic
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Hillabee Chlorite Schist (2)
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Ordovician
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Permian
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Longtan Formation (1)
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Lower Permian
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Middle Permian (5)
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Upper Permian
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Lopingian
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Permian-Triassic boundary (8)
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Shoo Fly Complex (1)
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Silurian
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Talladega Group (2)
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Glossopteridales
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plate tectonics (190)
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pollution (5)
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Precambrian
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Paleoarchean
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Hooggenoeg Formation (1)
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Roy Group (1)
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Warrawoona Group (3)
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Brockman Iron Formation (1)
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upper Precambrian
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Proterozoic
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Algonkian
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Damara System (1)
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Isan Orogeny (1)
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Lewisian (1)
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Neoproterozoic
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Pocatello Formation (1)
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coal
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turbidity current structures (3)
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sedimentation (47)
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sediments
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South America
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Brazil
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Southern Ocean
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United States
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Arizona
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California
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Lava Creek Tuff
Zircon grains from the Lava Creek Tuff (North America) unit B (sample LCTB)... Open Access
REENTRANT AND INCLUSION ABUNDANCES FOR LAVA CREEK TUFF A AND B, YELLOWSTONE... Available to Purchase
Petrochronology of zircons from Member B of the Lava Creek Tuff, erupted fr... Available to Purchase
Supereruption quartz crystals and the hollow reentrants Available to Purchase
Schematic of magmatic plumbing system beneath Henrys Fork Caldera and assoc... Available to Purchase
A: Panoramic view of toe (compression) zone, with large open folds and thru... Available to Purchase
Revised ages for tuffs of the Yellowstone Plateau volcanic field: Assignment of the Huckleberry Ridge Tuff to a new geomagnetic polarity event Available to Purchase
Secondary Minerals Associated with Geothermal Features of Yellowstone National Park Available to Purchase
Abstract The Yellowstone Geoecosystem ( Smith and Siegel, 2000 ; Morgan, 2007 ) comprises an amazing diversity of geologic features that control the character and distribution of geothermal features and soils of this landscape. The underlying bedrock geology of Yellowstone National Park (YNP) includes: Precambrian basement along the northern margin of the Park, with both low-grade metasedimentary rocks (biotite-andalusite-staurolite schists, quartzites and banded iron formations) and late Archean granitoid rocks. Phanerozoic sedimentary rocks in the northwestern corner of the Park in the southern Gallatin Range, that includes notably the Mississippian Madison Limestone near Mammoth Hot Springs, and Cretaceous shales and sandstones of the Kootenai, Eagle, Frontier and Harebell formations, south of Gardiner. The voluminous Eocene Absaroka Volcanics dominantly consisting of andesitic flows, tuffs, volcaniclastic rocks and hypabyssal intrusions. The iconic caldera-forming eruptive rocks of the Tertiary Huckleberry Ridge Tuff (2.1 Ma), Mesa Falls Tuff (1.2 Ma), and Lava Creek Tuff (0.61 Ma) of dominantly rhyolitic composition, and the post-caldera rhyolites (Christansen, 2001). The surficial geology of YNP ( Good and Pierce, 1996 ) additionally involves complex interactions of glacial geology ( Pierce, 1979 ) and active tectonics ( Pierce et al., 2007 ; Smith references). Tertiary volcanism and associated hydrothermal activity are directly related to the elevated hot spot that formed the regional Snake River Plain-Yellowstone system ( Smith and Siegel, 2000 ). Yellowstone contains the greatest number and diversity of geothermal systems on the planet, yielding an extensive array of extreme high-temperature environments, many of which are colonized by microorganisms that play either