Reconstrucción geomorfológica del último máximo glaciar en la cuenca del río San Juan, Argentina

Forte, Ana Paula; Villarroel, Cristian Daniel

doi:10.17735/cyg.v33i1-2.67099

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The relief in the Central Andes is mainly shaped by tectonic system activity (Strecker et al, 2007) and by Pleistocene glaciations (Forte and Villarroel, 2019;Palacios et al, 2020), thus, there are landforms caused by glacial erosion, e.g. : glacial striae, U-shaped and asymmetric valleys, smooth polished bedrocks, erratic blocks, cirques, rams, truncated spurs, edges, tarns, horns, hanging or suspended valleys, among others.…”

Section: Climatic and Geomorphological Settingmentioning

confidence: 99%

Rock glacier and protalus rampart inventory in Las Salinas river basin, Central Andes of Argentina

Forte

Villarroel

Angillieri

2021

CIG

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This paper presents a detailed rock glacier and protalus rampart inventory from Las Salinas river basin, an arid subtropical mountain hydrological system (between 31°02’ and 31°22’ S latitude) located in the northern sector of the Central Andes of Argentina, where permafrost and cryogenic processes prevail. The inventory is based on a geomorphological characterization by means of optical remote sensing and field description data. The study region covers 630 km2, with 3.25% of the area containing 405±8.2 rock glaciers and protalus ramparts in total, of which 231±2.5 are considered protalus rampart and 49±2 are considered active, 61±1 inactive and 64±3 fossil rock glaciers. Frequency ratio and logistic regression were used as statistical methods to determine the relationship between the distribution of these periglacial landforms and different geological, morphometric and climatic variables as elevation, potential incoming solar radiation, slope, aspect and lithology. Results show that elevation, lithology, and aspect are the most influencing factors for the occurrence of active rock glaciers. According to rock glaciers and protalus ramparts distribution, the permafrost occurrence probability is above 3690 m a.s.l. (current and high periglacial environment). However, some inactive rock glaciers and protalus rampart were found below this elevation, thus between 3300 and 3690 m a.s.l. the landscapes are dominated by an unstable periglacial environment.

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Section: Climatic and Geomorphological Settingmentioning

confidence: 99%

Rock glacier and protalus rampart inventory in Las Salinas river basin, Central Andes of Argentina

Forte

Villarroel

Angillieri

2021

CIG

Self Cite

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Examples of landslide dams and their stability in the Blanco River basin. Central Andes, San Juan Argentina

Angillieri

Villarroel²,

Ocaña³

et al. 2022

Journal of South American Earth Sciences

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Reconstrucción geomorfológica del último máximo glaciar en la cuenca del río San Juan, Argentina

Abstract: Derechos de reproducción bajo licencia Creative Commons 3.0. Se permite su inclusión en repositorios sin ánimo de lucro.

Cited by 2 publications

References 26 publications

Rock glacier and protalus rampart inventory in Las Salinas river basin, Central Andes of Argentina

Rock glacier and protalus rampart inventory in Las Salinas river basin, Central Andes of Argentina

Examples of landslide dams and their stability in the Blanco River basin. Central Andes, San Juan Argentina

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