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The AAPG/Datapages Combined Publications Database

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Abstract


 
Chapter from: M 62:Petroleum Basins of South America 
Edited by 
A. J. Tankard, R. Suarez Soruco, and H. J. Welsink
 

Authors:
A. J. Tankard, M. A. Ultiana, H. J. Welsink, V. A. Ramos, M. Turic, A. B. Franca. E. J. Milani, B. B. de Brito Neves, N. Eyles, J. Skarmeta, H. Santa Ana, F. Wiens, M. Cirbian, O. Lopez P., G. J. B. De Wit, T. Machacha, and R. McG. Miller 

Basin and Aerial Analysis/Evaluation

Published 1995 as part of Memoir 62
Copyright © 1995 The American Association of Petroleum Geologists.  All Rights Reserved.

 

Structural and Tectonic Controls of Basin Evolution in Southwestern Gondwana During the Phanerozoic
A. J. Tankard

Tankard Enterprises

Calgary, Alberta, Canada

M. A. Uliana

ASTRA

Buenos Aires, Argentina

H. J. Welsink

Perez Companc

Neuquén, Argentina

V. A. Ramos

Universidad de Buenos Aires

Buenos Aires, Argentina

M. Turic

YPF

Buenos Aires, Argentina

A. B. França

E. J. Milani

Petrobras/Nexpar

Curitiba, Brazil

B. B. de Brito Neves

Universidade de S. Paulo

São Paulo, Brazil

N. Eyles

Department of Geology

University of Toronto

Scarborough, Ontario, Canada

J. Skarmeta

ENAP

Santiago, Chile

H. Santa Ana

ANCAP

Montevideo, Uruguay

F. Wiens

Geo Consultores

Asunción, Paraguay

M. Cirbián

O. López Paulsen

YPFB

Santa Cruz, Bolivia

G. J. B. Germs

JCI Research Unit

Randfontein, South Africa

M. J. De Wit

University of Cape Town

Rondebosch, South Africa

T. Machacha

Geological Survey Department

Lobatse, Botswana

R. McG. Miller

NAMCOR

Windhoek, Namibia




 

Abstract



The continental lithosphere of southwestern Gondwana, comprising the southern part of South America and southern Africa, was largely assembled before the end of the Proterozoic. Geologic studies indicate that the basement Previous HitanisotropyTop that controlled the development of Phanerozoic basins was established by Neoproterozoic-Early Cambrian tectonism. This tectonism reactivated the older terrane boundaries or cut across them. The backbone linking the system of Pan-African and Brasiliano basins was a system of northeast-trending structures. There were four areas of pronounced Neoproterozoic-Early Cambrian basin subsidence in the study area: the Chiquitanas trough in Bolivia, the Puncoviscana basin in Argentina, the Dom Feliciano-Ribeira basins in Brazil, and the Damara-Nama basin complex of southern Africa.

 

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