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Geologic Time

QuestionAnswer
states that geologic processes that occur today are similar to those that occurred in the past. uniformitarianism
age of rocks and geological features compared with other rocks and features nearby. relative age
principle that in undisturbed rock layers. The oldest rocks are on the bottom. law of superposition
most rock- forming materials are deposited in horizontal layers. principle of original horizontality
sediments are deposited in large continuous sheets in all lateral directions. principle of lateral continuity
one rock contains pieces of another rock. The rock containing the pieces is younger than the pieces. principle of inclusions
remains or traces of ancient living organisms fossils
times when many species on earth died or became extinct within a relatively short period of time. mass extinction
fossils of species that existed on earth for a short length of time. Were abundant and inhabited many locations. index fossils
erath's history from it's origin 4.6 billion years ago to present geologic time scale
Created by: mreid496
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