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Module 7 - Geologic Time Vocabulary Quiz

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