La formación Chango Real (NW de Sierras Pampeanas, República Argentina), ejemplo del magmatismo paleozoico (Cambrico?). Diferencias geoquímicas con batolitos ordovicicos

J. E. Lazarte

doi:10.3989/egeol.92485-6392

La formación Chango Real (NW de Sierras Pampeanas, República Argentina), ejemplo del magmatismo paleozoico (Cambrico?). Diferencias geoquímicas con batolitos ordovicicos

Authors

J. E. Lazarte Facultad de Ciencias Naturales e I.M. Lillo, UNT-CONICET, Tucumán

DOI:

https://doi.org/10.3989/egeol.92485-6392

Keywords:

Paleozoic magmatism, granitic orthogneiss, Sierras Pampeanas, petrogenesis

Abstract

Chango Real Formation is part of Lower Paleozoic magmatism in Sierras Pampeanas Range, Northwestern Argentina. It is a biotitic, granitic ortogneiss, peraluminous, calcalkaline from Cambrian(?), different from others Ordovician batholiths. The origin of the magma was in a convergent active margin of plate, generated in the middle crust. It evolved by fractional crystallization (the last stage ended at 4 kb and 680º C) and was deformed during Famatinian Cycle (Ordovician-Silurian).

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Published

1992-12-30

How to Cite

Lazarte, J. E. (1992). La formación Chango Real (NW de Sierras Pampeanas, República Argentina), ejemplo del magmatismo paleozoico (Cambrico?). Diferencias geoquímicas con batolitos ordovicicos. Estudios Geológicos, 48(5-6), 257–267. https://doi.org/10.3989/egeol.92485-6392

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Issue

Vol. 48 No. 5-6 (1992)

Section

Articles

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