Discussion
A clastic sedimentary rock is one built from
Answer: A
Correct answer: fragments of pre-existing rock
Clastic rocks are built from clasts - fragments produced by the weathering and erosion of older rock, transported and then deposited and cemented. Conglomerate, sandstone and shale are the familiar members, distinguished by grain size. The non-clastic sediments form differently: by chemical precipitation, as with rock salt, or by the accumulation of organic remains, as with many limestones and coal.
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