Skip to Main Content
Book Chapter

Thick-skinned tectonic style resulting from the inversion of previous structures in the southern Cordillera Oriental (NW Argentine Andes)

By
N. Carrera
N. Carrera
Search for other works by this author on:
J. A. Muñoz
J. A. Muñoz
Search for other works by this author on:
Published:
January 01, 2013

Abstract

Structures mapped in the southern Cordillera Oriental of the Andes show an unexpected geometry in an east–west cross-sectional view, with a remarkable predominance of west-directed thrusts. Although some of the Andean structures trend north–south perpendicular to the main east–west direction of Andean shortening, many of them clearly differ from this expected orientation. This peculiar structural style has been largely related to the inversion of the Cretaceous Salta Rift Basin; however, some of these anomalously trending Andean folds and faults do not result from the inversion of Cretaceous faults. This lack of inversion of some Cretaceous structures becomes evident where west-dipping extensional faults rest in the footwall of west-directed thrusts instead of developing east-directed thrusts, as would be expected. Detailed study of several structures and examination of the geometry and facies distribution of several basins highlight not only the role played by the inversion of Cretaceous extensional faults on the geometry of the Andean structures, but also that played by basement anisotropies on the development of both the Cretaceous extensional faults and the Andean contractional structures.

You do not currently have access to this article.

Figures & Tables

Contents

Geological Society, London, Special Publications

Thick-Skin-Dominated Orogens: From Initial Inversion to Full Accretion

M. Nemčok
M. Nemčok
EGI, University of Utah, USA
Search for other works by this author on:
A. Mora
A. Mora
Ecopetrol S. A., Colombia
Search for other works by this author on:
J. W. Cosgrove
J. W. Cosgrove
Royal School of Mines, UK
Search for other works by this author on:
Geological Society of London
Volume
377
ISBN electronic:
9781862396388
Publication date:
January 01, 2013

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