فلیش

thumb|upright=1.02|Steeply-tilted layers of flysch on the coast of Bay of Biscay, at [[Zumaia, Basque Country, Spain]] Flysch () is a sequence of sedimentary rock layers that progress from deep-water and turbidity flow deposits to shallow-water shales and sandstones. It is deposited when a deep basin forms rapidly on the continental side of a mountain building episode. Examples are found near the North American Cordillera, the Alps, the Pyrenees and the Carpathians.