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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Kenya (1)
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Tanzania (2)
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Madagascar
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Egypt
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Southern Africa
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West Africa
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Mexico
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Pacific Ocean
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North Pacific
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Brazil
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Alabama
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Tallapoosa County Alabama (1)
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Delaware
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Eastern U.S.
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Georgia
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Great Basin (1)
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Idaho
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Illinois
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Yucca Mountain (2)
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New Hampshire
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New Mexico
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Pennsylvania
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Southwestern U.S. (1)
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Texas
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Utah (1)
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Virginia
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Amelia County Virginia (1)
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Washington
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Benton County Washington
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West Virginia
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Harrison County West Virginia (1)
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Monongalia County West Virginia (1)
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Wyoming
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Park County Wyoming (2)
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Yellowstone National Park (3)
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commodities
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metal ores
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mineral deposits, genesis (43)
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elements, isotopes
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boron
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B-11/B-10 (1)
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carbon
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C-13/C-12 (8)
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C-14 (1)
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organic carbon (6)
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chemical ratios (6)
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halogens
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bromine
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chlorine
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chloride ion (14)
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Cl-36 (1)
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Cl-37/Cl-35 (1)
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fluorine
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hydrogen
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deuterium (3)
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tritium (1)
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incompatible elements (1)
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isotope ratios (26)
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isotopes
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C-14 (1)
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Cl-36 (1)
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Cs-137 (1)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Sr-90 (2)
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Tc-99 (2)
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tritium (1)
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stable isotopes
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C-13/C-12 (8)
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Cl-37/Cl-35 (1)
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D/H (3)
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deuterium (3)
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nitrogen
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fossils
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Cenozoic
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Paleogene
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Mesozoic
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Cretaceous
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Triassic
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Silurian
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Waterville Formation (1)
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upper Precambrian
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Primary terms
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GeoRef Categories
Era and Period