Inherited controls in Andean structures in a sector of the Malargüe fold and thrust belt, Mendoza province, Argentina

MESCUA, J., GIAMBIAGI, L. Y RAMOS, V.

Trabajos de Geología

Universidad de Oviedo

Lugar: Oviedo; Año: 2010 vol. 30 p. 81 - 86

1988-5172

The thick-skinned Malargüe fold-and-thrust belt characterizes the Andes in southern Mendoza province, Argentina. This complex structure is the result of the combination of the Andean deformation and inherited fabrics of the substratum. A sector of this fold-and-thrust belt has been mapped in detail to evaluate the controls on the Andean deformation. These controls include the presence of basement pre-existing structures and the rheology of the deformed units, especially the occurence of a thick gypsum horizon that worked as a boundary layer where the cover is detached, and locally produced important diapirism.