Evidence of neotectonic activity in the extreme south of the Precordillera Riojana

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Patricia L. Ciccioli
Ana María Tedesco
Carlos O. Limarino

Abstract

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.

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Ciccioli, P. L., Tedesco, A. M., & Limarino, C. O. (2004). Evidence of neotectonic activity in the extreme south of the Precordillera Riojana. Revista De La Asociación Geológica Argentina, 59(1), 158-161. Retrieved from https://revista.geologica.org.ar/raga/article/view/1453
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