A name given to the series of sandstones and schists overlying the true nummulitic formation in the Alps, and included in the Eocene Tertiary.

A marine sedimentary facies commonly associated with deposition in a foreland basin created by an orogeny.

A thick marine sequence of sedimentary rocks characterized by thinly interbedded sandy shale, mudstone, sandstone and conglomerate; flysch is indicative of rapid erosion of a nearby newly formed mountain belt.

fine detritic (silty, clayey, or occasionally sandy) sedimentary rock formed during the medium stages of orogenesis in shallow coastal waters or on continental plains

a partly Tertiary, partly Cretaceous formation, consisting chiefly of sandstone, soft marls, and sandy shales, and found in the Alps and other places. [AHDOS

A flysch is a sandstone formation, the word being borrowed from Swiss German.