Can glacial erosion limit the extent of glaciation?

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dc.contributor.author Lax, Simon M.
dc.contributor.author Hubbard, Alun L.
dc.contributor.author Hein, Andrew S.
dc.contributor.author Kaplan, Michael R.
dc.date.accessioned 2011-06-23T10:52:40Z
dc.date.available 2011-06-23T10:52:40Z
dc.date.issued 2008-01-15
dc.identifier.citation Lax , S M , Hubbard , A L , Hein , A S & Kaplan , M R 2008 , ' Can glacial erosion limit the extent of glaciation? ' Geomorphology , vol 103 , no. 2 , pp. 172-179 . , 10.1016/j.geomorph.2008.04.020 en
dc.identifier.other PURE: 168105
dc.identifier.other dspace: 2160/7096
dc.identifier.uri http://hdl.handle.net/2160/7096
dc.description Kaplan, M. R., Hein, A. S., Hubbard, A. (2009). Can glacial erosion limit the extent of glaciation? Geomorphology, 103, (2), 172-179. en
dc.description.abstract In southern South America, the maximum areal extent of ice during the Quaternary Period, the Greatest Patagonian Glaciation (GPG, [Mercer, J.H., 1983. Cenozoic glaciation in the southern hemisphere. Annual Reviews of Earth and Planetary Science 11, 99-132.]), occurred at 1.1 Ma and subsequent glaciations were overall less extensive. The GPG preceded global minimum temperatures and maximal volume of ice, which occurred in the last similar to 800 kyr, as recorded in the marine delta O-18 record. Significant modification of the drainage morphology of the southern Andes from a non-glaciated to glaciated landscape occurred throughout the Quaternary Period. We infer a non-climatic relationship between glacial modification of the mountains and the decreasing extent of ice and we discuss processes of landscape development that could have caused the these include modification of valleys, such as development from a V- to a U-shape, and lowering of mass-accumulation areas. Such changes would strongly affect glacial dynamics, the mass balance profile and mass-flux during succeeding glaciations, especially for low-gradient outlet glaciers occupying low areas. Other areas around Earth (at least where ice has been warm-based) also may exhibit a non-random trend of decreasing extent of ice with time, ultimately because of glacial erosion in the Quaternary Period. (C) 2008 Elsevier B.V. All rights reserved. en
dc.format.extent 8 en
dc.language.iso eng
dc.relation.ispartof Geomorphology en
dc.title Can glacial erosion limit the extent of glaciation? en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.geomorph.2008.04.020
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Centre for Glaciology en
dc.description.status Peer reviewed en


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