Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W)
We present the first extensive high-resolution glacial geomorphic map west of the Andean Cordillera in southernmost Chile (52.8–53.1°S, 73.0–73.9°W). The map extends over 1565 km2 and is based on high-resolution satellite images and aerial photographs. At selected locations, the remotely mapped geom...
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Language: | English |
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Taylor & Francis Group
2023
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Online Access: | http://livrepository.liverpool.ac.uk/3170138/ https://doi.org/10.1080/17445647.2022.2153091 |
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3170138 2023-08-27T04:10:02+02:00 Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) Smedley, Rachel 2023-05-03 http://livrepository.liverpool.ac.uk/3170138/ https://doi.org/10.1080/17445647.2022.2153091 en eng Taylor & Francis Group Smedley, Rachel orcid:0000-0001-7773-5193 (2023) Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W). Journal of Maps, 19 (1). pp. 1-14. Article NonPeerReviewed 2023 ftunivliverpool https://doi.org/10.1080/17445647.2022.2153091 2023-08-10T22:28:13Z We present the first extensive high-resolution glacial geomorphic map west of the Andean Cordillera in southernmost Chile (52.8–53.1°S, 73.0–73.9°W). The map extends over 1565 km2 and is based on high-resolution satellite images and aerial photographs. At selected locations, the remotely mapped geomorphology was corroborated by field observations. The study area is dominated by glacial erosional landforms (77%) over depositional landforms (23%), with published submarine depositional landforms having been included (e.g. moraines). Glacial drift, kettle kame topography and lateral and frontal moraines form the primary depositional landforms and sediment associations. Glacial cirques, wide U-shaped valleys, whalebacks, roches moutonnées and scoured bedrock characterize most of the mapped area. The spatial distribution of whalebacks and roches moutonnées in the study area indicates a lack of lithological control on their formation and a warm-based, dynamic ice velocity and thickness regime during Patagonian Ice Sheet cover and retreat during the last glacial cycle. Article in Journal/Newspaper Ice Sheet The University of Liverpool Repository Estrecho ENVELOPE(-60.783,-60.783,-62.467,-62.467) Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) Journal of Maps 19 1 |
institution |
Open Polar |
collection |
The University of Liverpool Repository |
op_collection_id |
ftunivliverpool |
language |
English |
description |
We present the first extensive high-resolution glacial geomorphic map west of the Andean Cordillera in southernmost Chile (52.8–53.1°S, 73.0–73.9°W). The map extends over 1565 km2 and is based on high-resolution satellite images and aerial photographs. At selected locations, the remotely mapped geomorphology was corroborated by field observations. The study area is dominated by glacial erosional landforms (77%) over depositional landforms (23%), with published submarine depositional landforms having been included (e.g. moraines). Glacial drift, kettle kame topography and lateral and frontal moraines form the primary depositional landforms and sediment associations. Glacial cirques, wide U-shaped valleys, whalebacks, roches moutonnées and scoured bedrock characterize most of the mapped area. The spatial distribution of whalebacks and roches moutonnées in the study area indicates a lack of lithological control on their formation and a warm-based, dynamic ice velocity and thickness regime during Patagonian Ice Sheet cover and retreat during the last glacial cycle. |
format |
Article in Journal/Newspaper |
author |
Smedley, Rachel |
spellingShingle |
Smedley, Rachel Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
author_facet |
Smedley, Rachel |
author_sort |
Smedley, Rachel |
title |
Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
title_short |
Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
title_full |
Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
title_fullStr |
Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
title_full_unstemmed |
Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W) |
title_sort |
glacial geomorphology between the gran campo nevado and estrecho de magallanes, chile (52–53°s, 73°w) |
publisher |
Taylor & Francis Group |
publishDate |
2023 |
url |
http://livrepository.liverpool.ac.uk/3170138/ https://doi.org/10.1080/17445647.2022.2153091 |
long_lat |
ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-62.933,-62.933,-64.883,-64.883) |
geographic |
Estrecho Magallanes |
geographic_facet |
Estrecho Magallanes |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
Smedley, Rachel orcid:0000-0001-7773-5193 (2023) Glacial geomorphology between the Gran Campo Nevado and Estrecho de Magallanes, Chile (52–53°S, 73°W). Journal of Maps, 19 (1). pp. 1-14. |
op_doi |
https://doi.org/10.1080/17445647.2022.2153091 |
container_title |
Journal of Maps |
container_volume |
19 |
container_issue |
1 |
_version_ |
1775351767465197568 |