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The geology of the Bay of Biscay formed as the North Atlantic opened during the late Cretaceous. Near shore, thinned continental crust shows signs of complicated stress patterns, while basalt oceanic crust lies beneath deep water offshore. Geologists have debated whether the bay opened in a simple rotation "scissor pattern" or through left ...
In the early Cretaceous, the Bay of Biscay started opening around 126 Ma and completed by 85 Ma. This created the Biscay Abyssal Plain, and parted the peninsula from the Trevelyan Escarpment. During this time Iberia rotated anticlockwise relative to Eurasia. This caused the subduction of the Ligurian Basin onto the eastern side.
The Bay of Biscay (/ ˈ b ɪ s k eɪ,-k i / BISS-kay, -kee) is a gulf of the northeast Atlantic Ocean located south of the Celtic Sea.It lies along the western coast of France from Point Penmarc'h to the Spanish border, and along the northern coast of Spain, extending westward to Cape Ortegal.
Steeply-tilted layers of flysch on the coast of Bay of Biscay, at Zumaia, Basque Country, Spain. 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 ...
Gaztelugatxe. Gaztelugatxe is an islet on the coast of the Bay of Biscay belonging to the biscayan municipality of Bermeo, in the Basque Autonomous Community.It is connected to the mainland by a man-made bridge.
Geology of the Bay of Biscay; Grande America; K. Kontxako Bandera This page was last edited on 3 September 2023, at 18:53 (UTC). Text is available under the ...
In geology the "Vasco-Cantabrian Basin" or "Basque-Cantabrian Basin" covers the area and the seas off the coast in the Bay of Biscay, an area between the Iberian and European tectonic plates. The area is of special significance in the archaeology of the Upper Palaeolithic, Epipalaeolithic and Mesolithic periods of the Stone Age.
The Cantabrian Mountains and the Armorican Massif were then rift shoulders of the Bay of Biscay. The competent old rocks of the Armorican Massif have been eroded to a plateaulike peneplain . The highest summit, the Mont des Avaloirs ( Mayenne département), is just 417 m (1,368 ft) above sea level.