Relaciones isotópicas Sm/Nd en rocas graníticas y miloníticas de Sierras Pampeanas del noroeste Argentino

J. P. López; M. M. Rodríguez Areal; A. Sales; K. Kawashita

doi:10.3989/egeol.05611-236

Relaciones isotópicas Sm/Nd en rocas graníticas y miloníticas de Sierras Pampeanas del noroeste Argentino

Authors

J. P. López Instituto Superior de Correlación Geológica, Universidad Nacional de Tucumán
M. M. Rodríguez Areal Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán
A. Sales Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán
K. Kawashita Universidade Federal de Rio Grande do Sul, Porto Alegre-RS

DOI:

https://doi.org/10.3989/egeol.05611-236

Keywords:

Pampean Ranges, Northwestern Argentina, Famatinian Cycle, TIPA shear zone, Sm/Nd age

Abstract

The Velasco, Copacabana and Paimán Ranges in Sierras Pampeanas, are constituted mainly by paleozoic plutonic bodies of the Famatinian cycle (Huaco, Antinaco and Paimán) and for mylonitic rocks (TIPA Shear Zone), originated as a consequence of dynamic events happening during the Upper Ordovician-Devonian. The last magmatic event of the area would probably have of devonian age (Granite San Blas). Model-ages of two stages were calculated based on 147Sm/144Nd relationships; the obtained values are closely grouped at around 1594 Ma. and the more plausible interpretation seems to be a reworking of an Early Proterozoic protolith.

Downloads

Download data is not yet available.

Downloads

Published

2005-04-30

How to Cite

López, J. P., Rodríguez Areal, M. M., Sales, A., & Kawashita, K. (2005). Relaciones isotópicas Sm/Nd en rocas graníticas y miloníticas de Sierras Pampeanas del noroeste Argentino. Estudios Geológicos, 61(1-2), 3–8. https://doi.org/10.3989/egeol.05611-236

Download Citation

Issue

Vol. 61 No. 1-2 (2005)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

© CSIC. Manuscripts published in both the print and online versions of this journal are the property of the Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.

All contents of this electronic edition, except where otherwise noted, are distributed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence. You may read the basic information and the legal text of the licence. The indication of the CC BY 4.0 licence must be expressly stated in this way when necessary.

Self-archiving in repositories, personal webpages or similar, of any version other than the final version of the work produced by the publisher, is not allowed.