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Glacier dynamics during a phase of Late Quaternary warming in Patagonia reconstructed from sediment-landform associations

Lookup NU author(s): Professor Bethan DaviesORCiD

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© 2019The geomorphological record in glaciated landscapes can provide important information for the study of the response of glaciers to rapid climate change. This study presents a new reconstruction of the glacial history of the northern Monte San Lorenzo ice cap, southern South America, during a period of accelerated warming and deglaciation following the Antarctic Cold Reversal (14.5–12.8 ka). We present a detailed geomorphological map of the valleys to the north of Monte San Lorenzo. Sediment-landform assemblages identified include lateral and terminal moraine ridges, flutes, deltas, ice-contact fans, palaeoshorelines, kame terraces and outwash plains. We map 14 primary ice-limits, 7 of which are newly identified, and 7 of which are from previous studies, mapped here in greater detail. We devise landsystem models to formalise and document spatial and temporal changes in glacial processes and environments. Our new geomorphological mapping and landsystem reconstructions provide an important insight into the response of temperate Patagonian glaciers to rapidly-warming climate.

Publication metadata

Author(s): Martin JRV, Davies BJ, Thorndycraft VR

Publication type: Article

Publication status: Published

Journal: Geomorphology

Year: 2019

Volume: 337

Pages: 111-133

Print publication date: 15/07/2019

Online publication date: 01/04/2019

Acceptance date: 04/03/2019

Date deposited: 18/08/2022

ISSN (electronic): 0169-555X

Publisher: Elsevier B.V.

URL: https://doi.org/10.1016/j.geomorph.2019.03.007

DOI: 10.1016/j.geomorph.2019.03.007

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