Flysch (/ f l ɪ ʃ /) 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.

The Flysch Formation refers to a sequence of sedimentary rocks that typically form in deep marine environments along convergent tectonic plate boundaries, often in foreland basins. Flysch deposits are characterized by an alternating series of thin layers of sandstone, shale, siltstone, and sometimes limestone.

flysch, sequence of shales rhythmically interbedded with thin, hard, graywacke-like sandstones. The total thickness of such sequences is commonly many thousands of metres, but the individual beds are thin, only a few centimetres to a few metres thick.

On the cliffs of the west coast of Guipuzcoa we can find a marvel of nature more than 13 kilometers long. Among Deba, Mutriku and Zumaia you’ll see this hidden particular treasure of the flysch, also known as the Geopark of the Basque Coast. What is a flysch?

The waste products that accumulate as a deposit flanking mountains and built in part of the deformed flysch make up the molasse. In field practice the groups of sediments called flysch and molasse, or facies of them, are formations in the American sense.

Jul 1, 2017 · Flysch is a sequence of sedimentary rocks that is deposited in a deep marine facies in the foreland basin of a developing orogen. Flysch is typically deposited during an early stage of the orogenesis.

Flysch refers to a type of sedimentary rock formation consisting of mixed terrigenous siliciclastic and calcareous sediments deposited as deepwater turbidites in a proto-trench along continental margins, indicating the initiation of convergence and subduction in geological processes.

Jan 13, 2024 · The Zumaia Flysch, located in the Basque Country of Northern Spain, is a spectacular geological formation renowned for its stunning cliff faces and stratified rock layers. Not only is it simply stunning to look at, this natural marvel is a key site for geological research, offering insights into millions of years of Earth’s history.

Flysch and Molasse are terms that describe different sets of sedimentary facies associated with orogenic belts. Molasse is defined as terrestrial and shallow marine deposits formed nearest the rising mountain front. It consists of various interbedded rock types including conglomerates, sandstones, and shales.

Jan 31, 2025 · The flysch of Zumaia is the best place in Spain to observe this geological phenomenon. Throughout the eight kilometers of the coastal border that separates Deba from Zumaia, there is the Protected Biotope of the Abrasion Platform and the Flysch Cliffs of Zumaia, one of the most important geological spaces in Spain , famous among geologists all ...