Resumo

BELTRAMONE, C.A.. Morphostructural evolution of the western piedmont of Sierras Chica and Pajarillo-Copacabana, between La Cumbre and Las Lajas - Province of Córdoba. Rev. Asoc. Geol. Argent. [online]. 2004, vol.59, n.3, pp.423-432. ISSN 0004-4822.

The study of the geomorphology, the composition of the detrital series, and the structure, permitted to specify the characteristics of the Plio-Pleistocene morfoestructural evolution of the western piedmont of Sierra Chica and Pajarillo-Copacabana. Its evolution goes back to Late Mesozoic and Cenozoic times and results of diverse deformational events. As many as four Quaternary periods of piedmont fluvial aggradations (Plio-Pleistocene) and two Holocene periods of fluvio-aeolian aggradations are identified. The alluvial fans were controlled by two main fault sets; one of them longitudinal N and NNW trending, and the other oblique with a NW trend. Another E-W fault system took place during the Pliocene and Pleistocene periods.

Palavras-chave : Morphostructural evolution; Piedmont; Sierra Chica and Sierra Pajarillo-Copacabana; Córdoba.

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