Andean deformation in the Choromoro basin, NW Tucuman: mixed structural styles

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Liliana del V. Abascal

Abstract

The Choromoro basin is a tectonic depression in north-western Tucuman Province. Its present structural geometry is the result of Cenozoic compression that yielded a combined deformation style on the Neogene deposits. This structural style is represented by thick- and thin-skinned tectonics, superimposed in time and space. The thin-skinned style developed in the interior of the basin, associated with a detachment surface at a depth of 2.5 to 3 km, probably in shales of the Balbuena Subgroup (Lumbrera Formation). The thickskinned deformation relates to a deep detachment at a depth of about 20 km, incorporating metamorphic basement blocks, bounded by high-angle reverse faults and tilted with the cover strata.

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How to Cite
Abascal, L. del V. (2005). Andean deformation in the Choromoro basin, NW Tucuman: mixed structural styles. Revista De La Asociación Geológica Argentina, 60(2), 268-277. Retrieved from https://revista.geologica.org.ar/raga/article/view/1044
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