Information About ®Flysch |
| CATEGORIES ABOUT FLYSCH | |
| german loanwords | |
| sedimentary rocks | |
| sedimentology | |
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A flysch is a Sandstone formation, the word being Borrowed from Swiss German . Flysch is a relatively archaic term describing Syn-orogenic (occurring contemporaneously with mountain building) clastic Sedimentation within marine depositional Facies . It is contrasted with the term Molasse , which also describes syn-orogenic sediments, but are deposited in a terrestrial realm. These terms originated from descriptions of rocks within the European Alps . These terms were created before a true understanding of their Tectonic significance was realized. Flysch deposits occur at Collisional Plate Boundaries , often where remnant ocean basins exist along the same boundary. Sediment is derived from the uplifted mountains and deposited along axis to reminant ocean basin. The same ocean basin is in the process of Subducting along the same convergent margin. As subduction occurs, the Sandstone s and Shale s are scraped off the down-going oceanic plate and are accreted onto the overriding plate. As a result, flysch deposits are often highly deformed. EXTERNAL LINK
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