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The AAPG/Datapages Combined Publications Database

Journal of Petroleum Geology

Abstract

Journal of Petroleum Geology, Vol.16, No.4, pp. 397-420, 1993

©Copyright 2000 Scientific Press, Ltd.

HYDROCARBONS HABITAT IN A TRIASSIC-TO-CRETACEOUS
SUB-ANDEAN SETTING: NEUQUÉN BASIN, ARGENTINA

M. A. Uliana* and L. Legarreta*

* ASTRA C.A.P.S.A. Exploration & Production, Tucumán 744, piso 7, 1049 Beunos Aires, Argentina.

Abstract

The Triassic-Cretaceous Neuquén Basin of west-central Argentina covers an area of nearly 200,000 sq. km. encompassing the edge of the Andean Cordillera and the adjacent South American foreland. A seven-km thick sedimentary succession has been developed after three main geotectonic stages: (1) Basin onset and fault-induced subsidence after Triassic--Early Jurassic extensional collapse of a Late Paleozoic marginal orogenic belts; (2) Middle Jurassic--Paleogene regional subsidence behind a retreating subduction system; (3) Neogene contractional deformation and local load subsidence forced by advancing subduction conditions.

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