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A clastic dike is a seam of sedimentary material that fills an open fracture in and cuts across sedimentary rock strata or layering in other rock types. Clastic dikes form rapidly by fluidized injection (mobilization of pressurized pore fluids) or passively by water, wind, and gravity (sediment swept into open cracks).
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.
Clastic dykes ( Fig. 23) are seams of clastic material that cut across layered strata, usually at a steep angle. There are two main formational mechanisms proposed for clastic dykes. The first suggests that they form rapidly by fluidized injection due to over pressure. The second suggests that sediment was washed or blown into pre-existing ...
Nov 20, 2015 · The clastic dikes are generally opening mode (mode I) fractures. At map view, the geometry of clastic dike swarms can be chaotic, linear, en echelon, subparallel, or radial (Marco et al. 2002 ). Dike width may range from several mm up to several m (Figs. 1 and 2 ). Clastic Dike, Fig. 1. Three disconnected, partially overlapping dike segments ...
Jun 24, 2019 · PDF | Clastic dikes are often the only evidence of past disasters in poorly exposed areas and therefore their findings are extremely important for... | Find, read and cite all the research you...
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Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, [1] chunks, and smaller grains of rock broken off other rocks by physical weathering. [2] Geologists use the term clastic to refer to sedimentary rocks and particles in sediment transport, whether in suspension or ...
