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Earth History Inv 3
Earth History vocab
Term | Definition |
---|---|
cement | the material that holds particles together to make stone |
cementation | the deposition of cement in the spaces between particles of sediment |
compaction | decreasing the volume of accumulated sediments by using pressure to decrease the size and number of the spaces between the particles |
groundwater | water that has soaked into the ground and fills up spaces between rocks or deposited materials |
horizontal | level, not slanted or sloped |
precipitate | a substance separated from a solution |
principle of original horizontality | a theory that says sedimentary layers of rock are flat and horizontal |
principle of superposition | a theory that says sedimentary rocks on the bottom are older than rocks on the top |
sedimentary rock | a rock that forms when layers of sediments get stuck together |
uniformitarianism | a theory that says geological processes observed in the past are the same as those observed today |