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Dating Methods template



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QuestionsAnswers
Fluorine DatingA relative (chemical) dating method that compares the accumulation of fluorine in animal and human bones from the same site.
Chemical DatingDating methods that use predictable chemical changes that occur over time.
Index fossilsFossils that are from specified time ranges, are found in multiple locations, and can be used to determine the age of associated strata.
Cultural DatingRelative dating methods that are based on material remains' time spans.
Pebble ToolsThe earliest stone tools, in which simple flakes were knocked off to produce an edge used for cutting and scraping.
DendrochronologyA chronometric dating method that uses a tree-ring count to determine numerical age
Radiocarbon DatingThe radiometric dating method in which the ratio of 14C to 12C is measured to provide an absolute date for a material younger than 50,000 years.
IsotopesTwo or more forms of a chemical element that vary in the number of neutrons in the nucleus and by the atomic mass.
Half-LifeThe time it takes for half of the radioisotopes in a substance to decay; used in various radiometric dating methods.
IgneousRock formed from the crystallization of molten magma, which contains the radioisotope 40K; used in potassium-argon dating.
Radiopotassium DatingThe radiometric dating method in which the ratio of 40K to 40Ar is measured to provide an absolute date for a material older than 200,000 years.
Fission Track DatingAn absolute dating method based on the measurement of the number of tracks left by the decay of uranium-238



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