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[flish] /flɪʃ/
noun, Geology.
an association of certain types of marine sedimentary rocks characteristic of deposition in a foredeep.
Origin of flysch
Swiss German
1845-55; < German < Swiss German flīsch referring to such deposits in the Swiss Alps; perhaps akin to Swabian dial. flins slate (akin to flint) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for flysch


(sometimes not capital) a marine sedimentary facies consisting of a sequence of sandstones, conglomerates, marls, shales, and clays that were formed by erosion during a period of mountain building and subsequently deformed as the mountain building continued. The phenomenon was first observed in the Alps
Word Origin
Swiss German
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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