Metamorfismo de baja presión, su relación con el desarrollo de la Cuenca Puncoviscana, plutonismo y régimen tectónico. Argentina

J. N. Rossi; A. J. Tosselli; F. R. Durand

doi:10.3989/egeol.92485-6394

Metamorfismo de baja presión, su relación con el desarrollo de la Cuenca Puncoviscana, plutonismo y régimen tectónico. Argentina

Authors

J. N. Rossi Facultad de Ciencias Naturales. Universidad Nacional de Tucumán, Tucumán
A. J. Tosselli Facultad de Ciencias Naturales. Universidad Nacional de Tucumán, Tucumán
F. R. Durand Facultad de Ciencias Naturales. Universidad Nacional de Tucumán, Tucumán

DOI:

https://doi.org/10.3989/egeol.92485-6394

Keywords:

Cordillera Oriental Argentina, crustal extension, basic-alkalic lavas, low-pressure/high temperature metamorphism

Abstract

In the Cordillera Oriental Argentina (22 and 26° S), the Puncoviscana Formation Basin was developed, in which an extensional tectonic setting would had been supported from Upper Precambrian to Middle Ordovician. That is suggested by the limited crustal thickening, the insignificant uplift after deformation, the sedimentary-synchronous basic-alkalic lavas and the growth of a low-pressure high-temperature metamorphism that culminates in anatectic migmatites, which have no explanation by the only magmatic heat derived from the little trondhjemite-granodiorite diapires intruded during the Middle Ordovician.

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Published

1992-12-30

How to Cite

Rossi, J. N., Tosselli, A. J., & Durand, F. R. (1992). Metamorfismo de baja presión, su relación con el desarrollo de la Cuenca Puncoviscana, plutonismo y régimen tectónico. Argentina. Estudios Geológicos, 48(5-6), 279–287. https://doi.org/10.3989/egeol.92485-6394

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Issue

Vol. 48 No. 5-6 (1992)

Section

Articles

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