Postsedimentary lithogenesis of terrigenous complexes in fold systems: Rock fabric and cleavage |
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Authors: | I. M. Simanovich |
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Affiliation: | (1) Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017, Russia |
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Abstract: | The simplest intergranular cleavage and foliation of clayey rocks are typical of postsedimentary lithogenesis of folded terrigenous complexes at passive continental margins if the rocks do not contain metamorphic minerals. Cleavage zones coincide with metagenesis (anchimetamorphism) zones. Cleavage is often superimposed on the rock fabric formed in the process of subsidence lithogenesis (e.g., in the Verkhoyansk terrigenous complex). In other cases, cleavage in terrigenous rocks is regarded as the final stage of the development of their microfabric formation related to folding (e.g., Jurassic sequence of southern Dagestan). |
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