Glacial Deposits in the Río del Peñón Formation (Late Carboniferous), Río Blanco Basin, Northwestern Argentina

Autores/as

  • E. Gulbranson Department of Geology, University of California Davis, One Shields Ave, Davis, CA 95616, EE.UU
  • Carlos O. Limarino CONICET-Departamento de Geología, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
  • Sergio Marenssi CONICET-Departamento de Geología, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
  • I. Montanez Department of Geology, University of California Davis, One Shields Ave, Davis, CA 95616, EE.UU.
  • N. Tabor Department of Geological Sciences, Southern Methodist University, Dedman College, Dallas, TX 75275, EE.UU.
  • V. Davydof Department of Geosciences, Boise State University, Boise, ID, 83725, EE.UU.
  • Carina Colombi CONICET-Departamento de Geología, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina

Resumen

The Río del Peñón Formation (Borrello, 1955 nom. subst. González y Bossi, 1986) forms the upper part of the late Paleozoic outcropping in the Río Blanco anticline (northwest Precordillera, La Rioja Province). This unit is predominantly composed of a thick (1270 m.) sandstone and mudstone sequence including thin levels of coal and scarce conglomerates (Scalabrini Ortiz, 1972; Scalabrini Ortiz and Arrondo, 1973; González and Bossi, 1986). These deposits represent a complex interfingering of shallow marine and fluvial deposits recording relative sea-level fluctuations during the Late Carboniferous-Early Permian. The Río del Peñón Formation overlies andesites and volcanic breccias of the Punta del Agua Formation (Fig. 1 and 2a).

Despite well known Late Carboniferous glacigenic deposits from different localities within the Precordillera (López Gamundí, 1987, 1997; López Gamundí and Martinez, 2000; Marenssi et al., 2004; Limarino and Spalletti, 2006; Henry et al., in press), glaciogenic deposits have not been reported from the Río del Peñón Formation. This documentation of glacial-related sediments in this succession serves to further constrain our knowledge of the temporal and paleogeographic distribution of Gondwanan glacial deposits.

Citas

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Publicado

2021-03-31

Cómo citar

Gulbranson, E. ., Limarino, C. O. ., Marenssi, S. ., Montanez, I. ., Tabor, N. ., Davydof, V. ., & Colombi, C. . (2021). Glacial Deposits in the Río del Peñón Formation (Late Carboniferous), Río Blanco Basin, Northwestern Argentina. Latin American Journal of Sedimentology and Basin Analysis, 15(1), 37-42. Recuperado a partir de https://lajsba.sedimentologia.org.ar/index.php/lajsba/article/view/156

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