Turbidite
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A turbidite is the geologic deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the
Turbidites are deposited in the deep ocean troughs below the continental shelf, or similar structures in deep lakes, by underwater avalanches which slide down the steep slopes of the continental shelf edge. When the material comes to rest in the ocean trough, it is the sand and other coarse material which settles first followed by mud and eventually the very fine particulate matter. It is this sequence of deposition that creates the Bouma sequences that characterize these rocks.
Complete Bouma sequence in Devonian Sandstone (Becke-Oese Quarry, Germany)
Gorgoglione Flysch, of Miocene age, South Italy
Flysch
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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
Turbidite
…Contourite Flysch High-density turbidity currents (Lowe sequence…
Steeply-tilted layers of flysch on the coast of Bay of Biscay, at Zumaia, Basque Country, Spain
Carpathian flysch