Skip to Main Content
Book Chapter

Palaeomagnetism of Jurassic and Cretaceous rocks from South America and the tectonics of the central Andes

By
Eduardo S. Oviedo
Eduardo S. Oviedo
Search for other works by this author on:
Daniel A. Valencio
Daniel A. Valencio
Search for other works by this author on:
Juan F. Vilas
Juan F. Vilas
Search for other works by this author on:
Published:
January 01, 1991

Paleomagnetic data for Jurassic and Cretaceous rocks from the South American and Patagonian platforms and the Andean chain were recomputed or reevaluated. The reliable data for Lower and Upper Cretaceous rocks from the Andean Chain for sampling sites situated north of Arica do not support the abrupt change in the trend of the Andes north of Arica (Bolivian orocline) as being post-orogenic. The distribution of the Late Cretaceous paleomagnetic poles for South America, including those for the Upper Cretaceous rocks exposed in the Andean chain north of Arica, can be interpreted as the effect of an apparent polar shift of this continent. The paleomagnetic data of the Early and Late Cretaceous rocks from the Andean chain exposed north of Arica can then be explained by continental-scale geodynamic processes.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Special Papers

Andean Magmatism and Its Tectonic Setting

Russell S. Harmon
Russell S. Harmon
Search for other works by this author on:
Carlos W. Rapela
Carlos W. Rapela
Search for other works by this author on:
Geological Society of America
Volume
265
ISBN print:
9780813722658
Publication date:
January 01, 1991

References

Related

Citing Books via

Related Book Content
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal