Reflection Profiles Across the Aquitaine Basin (North Pyrenean Basin)
R. Curnelle, R. Marco, 1983. "Reflection Profiles Across the Aquitaine Basin (North Pyrenean Basin)", Seismic Expression of Structural Styles: A Picture and Work Atlas. Volume 1–The Layered Earth, Volume 2–Tectonics Of Extensional Provinces, & Volume 3–Tectonics Of Compressional Provinces, A. W. Bally
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The Albo-Aptian extension creates tilted, rapidly subsiding, fault blocks filled with thick marly sediments. Reefs are located on high fault blocks (Figures 2a and b).
During the Upper Cretaceous, and related to the orogeny of the Pyrenees to the south, a foredeep filled with flysch formations is being formed. Toward the north this foredeep merges into a carbonate platform that is located on a flexure associated with older Albo-Aptian fault systems.
The accentuation of the Pyrenees orogeny during the Eocene leads to the northward migration of the flysch trough which remains bounded to the north by the carbonate biothermal shelf edge, with a restricted marine platform to the east.
After filling of the flysch trough by mid-Eocene time, sedimentation in the region is dominated by Eocene-Oligocene fluvio-deltaic deposits.
The southern portion of the profile shows the structurally complex north front of the Pyrenees with associated "injections" of Triassic salt.