Incised-valley morphologies and sedimentary-fills within the inner shelf of the northern Bay of Biscay

Details Incised-valley morphologies and sedimentary-fills within the inner shelf of the northern Bay of Biscay Incised-valley morphologies and sedimentary-fills within the inner shelf of the northern Bay of Biscay

2008-10-14

arxiv.org/abs/0810.2370v1

Journal of Marine Systems 72, 3-4 (2008) 383-396

Physics

Geophysics

Scientific paper

10.1016/j.jmarsys.2007.05.014

This study is a first synthesis focused on incised-valleys located within the inner shelf of the Bay of Biscay. It is based on previously published results obtained during recent seismic surveys and coring campaigns. The morphology of the valleys appears to be strongly controlled by tectonics and lithology. The Pleistocene sedimentary cover of the shelf is very thin and discontinuous with a maximum thickness ranging between 30 and 40 m in incised-valley fills. Thus the incised bedrock morphology plays a key-role by controlling hydrodynamics and related sediment transport and deposition that explains some variations of those incised-valley fills with respect to the previously published general models.

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