TY - JOUR AU - Gulbranson, E. AU - Limarino, Carlos O. AU - Marenssi, Sergio AU - Montanez, I. AU - Tabor, N. AU - Davydof, V. AU - Colombi, Carina PY - 2021/03/31 Y2 - 2024/03/28 TI - Glacial Deposits in the Río del Peñón Formation (Late Carboniferous), Río Blanco Basin, Northwestern Argentina JF - Latin American Journal of Sedimentology and Basin Analysis JA - Lajsba VL - 15 IS - 1 SE - DO - UR - https://lajsba.sedimentologia.org.ar/index.php/lajsba/article/view/156 SP - 37-42 AB - <p>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).</p><p>Despite well known Late Carboniferous glacigenic deposits from different localities within the Precordillera (López Gamundí, 1987, 1997; López Gamundí and Martinez, 2000; Marenssi <em>et al</em>., 2004; Limarino and Spalletti, 2006; Henry <em>et al</em>., 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.</p> ER -