A sedimentary discordance shows bedding planes at an angle to each other. It is formed when sedimentary layers,originally horizontal,are warped or become inclined by tectonic forces,later to be overlain by a new cycle of deposition. Such discordances are an illustration of the large-scale cyclic events as they play a continuing role in geology. Subsidence creates marine depositional basins in which sequences of sedimentary rocks are formed. A next phase of tectonic uplift raises these rocks into mountains. Next a similar cycle repeats itself,erosion,subsidence,sedimentation,uplift. The example here seen shows inclined beds of chalk overlain by a flat stratum of coarse conglomerates. Located along the south coast of Cyprus | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
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