INVESTIGADORES
PINOTTI Lucio Pedro
artículos
Título:
Pliegues magmáticos en el plutón trondhjemítico de La Fronda, Sierras Pampeanas de Córdoba, Argentina.
Autor/es:
F. J. DERAMO(1), N. VEGAS, L. P. PINOTTI, J. M. TUBÍA Y J. E. CONIGLIO
Revista:
GEOGACETA
Editorial:
Asociación Geológica de España
Referencias:
Lugar: Madrid; Año: 2006 vol. 39 p. 15 - 18
ISSN:
0213-683X
Resumen:
From structural and magnetic fabric patterns, this work reports a complex folded structure in the La
Fronda pluton, a small trondhjemite massif located in the Sierras de Córdoba which form the eastern part
of the Sierras Pampeanas in Argentina. Isoclinal folds with no thickening at the hinge zones deform the
compositional banding of these igneous rocks. Both the orientation of axial sur faces and fold axes vary
from place to place and do not concur with the orientation of folds from the metamorphic countr y rocks.
Microstructural data point to a fabric formed by grain-supported flow in a cr ystal-rich magma during the
imprint of a vanishing regional stress field.
Key words: Sierras Pampeanas, magmatic folds, magnetic fabric, trondhjemite.Sierras Pampeanas, magmatic folds, magnetic fabric, trondhjemite.
