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10 Cards in this Set
- Front
- Back
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the process by which rocks are formed, changed and destroyed by geological processes
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rock cycle
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type of rock formed by sedimentation of material at the Earth's surface and within bodies of water
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sedimentary
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the order in which sedimentary deposits are layered one above the other
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superposition
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arrangement of rocks and deposits in the order in which they occurred
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relative dating
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determining the age of an object with reference to a specific time scale, such as a calendar
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absolute dating
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an interruption of sedimentation, usally caused by erosion
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unconformity
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decomposition of radioactive material over time
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radioactive decay
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determining the age of an object based on the amount of radioactive decay of the object
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radioactive dating
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the time required for one half of the atoms of a given amount of a radioactive substance to disintegrate
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half-life
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any remains or trace of a living thing of a former geologic age, e.g., a footprint, skeleton, etc.
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fossil
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