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

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, Argenti...

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Bibliographic Details
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.v1
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_/12854384/1
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Summary: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.

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