Skip to Main Content
Book Chapter

Reflection Profiles Across the Aquitaine Basin (Salt Tectonics)

By
R. Curnelle
R. Curnelle
ELF Aquitaine
Search for other works by this author on:
R. Marco
R. Marco
ELF Aquitaine
Search for other works by this author on:
Published:
January 01, 1983

Abstract

This profile (Figures 2a, 2b) shows three halokinetic (Triassic salt) structures in different stages of theirs evolution:

  1. 1.

    To the north a structure which grew during the Cretaceous as indicated by the thinning of the corresponding beds. Erosion at the base of the Tertiary suggests later reactivation of the salt structure.

  2. 2.

    To the south a pre-Oligocene piercement structure.

  3. 3.

    in the center of the section an exaggerated piercement which almost reaches the present sea floor.

  4. 4.

    Sedimentation during the Albo-Aptian involves thickening of the beds in synclines between salt swells.

This profile (Figures 3a, 3b) shows the following features:

  1. 1.

    Outflow of salt during the Eocene.

  2. 2.

    The "roots" of the structure are related to a deep structural feature causing doming during the Albe-Aptian extensional phase.

  3. 3.

    The Pyreneen compressional phase was very active during the Eocene and leads to the outflow of the salt.

  4. 4.

    The roof of the salt dome carries a Senonian fragment that was encountered by Well B but not penetrated in Well A.

  5. 5.

    The doming of the salt seemingly affects the northern flank of the section with thickening of the beds during the Eocene. Synclinal compensatory filling during the Eocene is also associated with the southern flank.

  6. 6.

    Halokinetic processes ceased during the Miocene and Pliocene. This period corresponds to the east to west progradation of the continental shelf as indicated by a number of channels displayed on the section.

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Studies in Geology

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
A. W. Bally
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
15
ISBN electronic:
9781629810188
Publication date:
January 01, 1983

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal