Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/17216
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: The Last Glaciation in central Magellan-Strait, southernmost Chile
Author(s): Clapperton, Chalmers M
Sugden, David E
Kaufman, Darrell
McCulloch, Robert
Contact Email: robert.mcculloch@stir.ac.uk
Issue Date: Sep-1995
Date Deposited: 29-Oct-2013
Citation: Clapperton CM, Sugden DE, Kaufman D & McCulloch R (1995) The Last Glaciation in central Magellan-Strait, southernmost Chile. Quaternary Research, 44 (2), pp. 133-148. https://doi.org/10.1006/qres.1995.1058
Abstract: Glacial landforms and drift stratigraphy in central Magellan Strait, southernmost Chile, document repeated fluctuations during the last glacial cycle of outlet lobes from an ice cap centred over the southern Andes.  The lobes developed comparatively low-gradient profiles because of low basal shear stresses over soft deformable beds and this made them sensitive to even small-scale changes in mass balance.  Such low profiles and rapid calving in deep proglacial lakes during deglaciation may have made the Magellan ice lobe particularly responsive to climatic fluctuations during the last glacial cycle, and to readvance and retreat over considerable distances.  Study of the glacial landforms and drift stratigraphy has led to the identification of at least five glacier advances to limits at and south of the Segunda Angostura.  Fragments of mollusc shells contained in the basal till indicate marine incursions between some advances, thus documenting extensive deglaciation.  A partial chronology based on amino acid studies and radiocarbon dating suggests that five of these advances occurred during the last glacial cycle.  The most extensive advances may have culminated during substages of marine isotope stage 5 (substage 5b or 5d) and / or during stage 4.  Slightly less extensive advances occurred between ca. 28,000 and 14,000 yr B.P.
DOI Link: 10.1006/qres.1995.1058
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Licence URL(s): http://www.rioxx.net/licenses/under-embargo-all-rights-reserved

Files in This Item:
File Description SizeFormat 
Clapperton et al QR 1995.pdfFulltext - Published Version996.77 kBAdobe PDFUnder Permanent Embargo    Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved https://creativecommons.org/publicdomain/zero/1.0/

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.