The glacial geomorphology of the Río Corcovado, Río Huemul and Lago Palena/General Vintter valleys, northeastern Patagonia (43°S, 71°W)

• Published in: Journal of Maps
• Main Authors: Leger, Tancrède, Hein, Andrew, Bingham, Robert, Martini, Mateo, Soteres, Rodrigo, Sagredo, Esteban, Martínez, Oscar
• Other Authors: School of Geosciences Edinburgh, University of Edinburgh, Millenium Nucleus Paleoclimate, Pontificia Universidad Católica de Chile, Santiago - Instituto de Geografía, Estación Patagonia de Investigaciones Interdisciplinarias UC (EPII-UC) - Pontificia Universidad Católica de Chile, Santiago (EPII-UC), Facultad de Ciencias Naturales y Ciencias de la Salud, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Natural Environment Research Council (NERC) University of Edinburgh E3 Doctoral Training Partnership Ph.D. studentship (award code: NE/L002558/1) awarded to TPMLSecond field expedition (January/February 2020) was supported by a crowd-funding campaign through the Crowd. Science fundraising platform (https://crowd.science) and a British Society for Geomorphology Postgraduate Research Grant award (BSG-2019-04) awarded to TPML.Fieldwork in the Lago Palena/General Vintter valley was supported by a Ph.D. Fellowship National Commission of Scientific and Technological Research (#21161417) awarded to RLS and by the ANIS Millennium Science Initiative/millennium Nucleus Paleoclimate (NCN17_079) for EAS, RLS, and MAM.OHmi Patagonia Bahia Exploradorex and LabEx DRIIHM - ANR-11-LABX-0010, ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2020
• Subjects: Patagonia; glacial geomorphology; Quaternary landscape evolution; Río Corcovado glacier; Río Huemul glacier; Lago Palena/General Vintter glacier; OHMi Bahia Exploradores; [SDE]Environmental Sciences; [SDV]Life Sciences [q-bio]; Argentina; Chubut; Huemul; Ice Sheet
• Online Access: https://hal.archives-ouvertes.fr/hal-03677576; https://doi.org/10.1080/17445647.2020.1794990

International audience This study presents the first detailed glacial geomorphological map of the sediment-landform assemblages formed by three eastern outlet glaciers of the former Patagonian Ice Sheet. These glaciers occupied the Río Corcovado, Río Huemul and Lago Palena/General Vintter valleys, Chubut province, Argentina (43°S, 71°W). By combining remote sensing and field-mapping, we build on previous ice-sheet scale mapping and geological surveys to provide high-resolution spatial information on local ice-contact glaciogenic, glaciofluvial, glaciolacustrine, and subglacial landforms. Twenty-five landform types, many of which are newly mapped in the region, were digitized as georeferenced shapefiles over a 5300 km2 area. This map enables the identification of former ice-flow directions, relative ice-margin positions and glaciofluvial drainage pathways for each preserved Quaternary glaciation. It also elucidates the former areal extent, geolocation and spillways of glaciolacustrine bodies formed during the last deglaciation. The map delivers an essential framework on which to build robust glacier-scale geomorphological and geochronological reconstructions.