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Revista de la Asociación Geológica Argentina
versão impressa ISSN 0004-4822
Resumo
CICCIOLI, Patricia L.; TEDESCO, Ana M. e LIMARINO, Carlos O.. Evidence of neotectonic activity in the extreme south of the Precordillera Riojana. Rev. Asoc. Geol. Argent. [online]. 2004, vol.59, n.1, pp.158-161. ISSN 0004-4822.
Neotectonic features to the north of Guandacol (Precordillera of La Rioja) include a variety of fault traces, developed within Quaternary deposits, resulting from the interaction of two morphostructural fronts with opposite vergence. The west-verging crystalline basement blocks of Sierras Pampeanas would have produced NNW-SSE reverse faults with the lower block toward the west, whereas the Precordillera thrust belt would have generated NNE-SSW reverse faults with a downthrow to the east.
Palavras-chave : Neotectonic; Precordillera; La Rioja.