Dike (geology)
A sheet of rock that is formed in a fracture of a pre-existing rock body / From Wikipedia, the free encyclopedia
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In geology, a dike or dyke is a sheet of rock that is formed in a fracture of a pre-existing rock body. Dikes can be either magmatic or sedimentary in origin. Magmatic dikes form when magma flows into a crack then solidifies as a sheet intrusion, either cutting across layers of rock or through a contiguous mass of rock. Clastic dikes are formed when sediment fills a pre-existing crack.[1]
This article is about the geological formation. For the flood control embankment, see levee.