Module 7 - Geologic Time Vocabulary Quiz
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a principle stating that geologic processes that occur today are similar to those that occurred in the past
uniformitarianism
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the numerical age, in years, of a rock or object
absolute age
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the age of rocks and geologic features compared with other nearby rocks and features
relative age
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the principle that in undisturbed rock layers, the oldest rocks are on the bottom
superposition
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principle that most rock-forming materials are deposited in horizontal layers
original horizontality
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principle that sediments are deposited in large, continuous sheets in all lateral directions
lateral continuity
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a piece of an older rock that becomes a part of a new rock
inclusions