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

• Main Authors: Leger, Tancrède P. M., Hein, Andrew S., Bingham, Robert G., Martini, Mateo A., Soteres, Rodrigo L., Sagredo, Esteban A., Martínez, Oscar A.
• Format: Text
• Language: unknown
• Published: Taylor & Francis 2020
• Subjects: Pharmacology; 59999 Environmental Sciences not elsewhere classified; FOS Earth and related environmental sciences; Ecology; FOS Biological sciences; 20199 Astronomical and Space Sciences not elsewhere classified; FOS Physical sciences; Sociology; FOS Sociology; 69999 Biological Sciences not elsewhere classified; Cancer; Computational Biology; Patagonia; Argentina; Chubut; Huemul; Ice Sheet
• Online Access: https://dx.doi.org/10.6084/m9.figshare.12854384; https://tandf.figshare.com/articles/journal_contribution/The_glacial_geomorphology_of_the_R_o_Corcovado_R_o_Huemul_and_Lago_Palena_General_Vintter_valleys_northeastern_Patagonia_43_S_71_W_/12854384

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 km 2 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.