flysch

flysch

[flish]
noun Geology.
an association of certain types of marine sedimentary rocks characteristic of deposition in a foredeep.

Origin:
1845–55; < German < Swiss German flīsch referring to such deposits in the Swiss Alps; perhaps akin to Swabian dial. flins slate (akin to flint)

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Flysch (flɪʃ)
 
n
(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
 
[Swiss German]

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