GEOLOGY
PALEONTOLOGY
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Question
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The numeric age of an object or event, often stated in years before the present, as established by an absolute-dating processes, such as radiometric dating.
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Index fossil
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Period
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Absolute age
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Varve
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Explanation:
Detailed explanation-1: -Absolute dating methods determine how much time has passed since rocks formed by measuring the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals.
Detailed explanation-2: -Absolute dating determines the numerical age while relative dating arranges the fossils in an order.
Detailed explanation-3: -The age of rocks is determined by radiometric dating, which looks at the proportion of two different isotopes in a sample. Radioactive isotopes break down in a predictable amount of time, enabling geologists to determine the age of a sample using equipment like this thermal ionization mass spectrometer.
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