rock
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| strata |
In geology, a layer of rock
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| nonconformity | An unconformity between sedimentary rock and either igneous or metamorphic rock
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| unconformity |
A surface of erosion that separates one layer of rock from another
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| paraconformity | An unconformity for which there is no evidence, but geologists think should exist
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| angular unconformity | an unconformity where the strata are tilted relative to each other
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| disconformity | An unconformity between two layers of sedimentary rock.
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| Intrusion | "Veins" of igneous rock that shoot right through several layers of sedimentary rock
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| dikes | intrusions that run perpendicular to the strata
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| sill | intrusions that run parallel to the strata
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| humus | the decayed remains of once-living creatures
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| Lamination | A layer of rock less then 1 centimeter thick
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| Laminae | Many layers of lamination stacked together
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| Sediments | Sand, silt, minerals, and other components of soil
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| Delta | A typically fan shaped area where a river deposits it's sediments at it's mouth
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