Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet
Continental ice sheets typically sculpt landscapes via erosion; under certain conditions, ancient landscapes can be preserved beneath ice and can survive extensive and repeated glaciation. We used concentrations of atmospherically produced cosmogenic beryllium-10, carbon, and nitrogen to show that a...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20150001448 2023-05-15T16:26:13+02:00 Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet Crosby, Benjamin T. Lini, Andrea Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas Allen Rood, Dylan H. Unclassified, Unlimited, Publicly available April 17, 2014 application/pdf http://hdl.handle.net/2060/20150001448 unknown Document ID: 20150001448 http://hdl.handle.net/2060/20150001448 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing GSFC-E-DAA-TN19589 Science Express; 344; 6182; 402-405 2014 ftnasantrs 2019-07-21T00:18:46Z Continental ice sheets typically sculpt landscapes via erosion; under certain conditions, ancient landscapes can be preserved beneath ice and can survive extensive and repeated glaciation. We used concentrations of atmospherically produced cosmogenic beryllium-10, carbon, and nitrogen to show that ancient soil has been preserved in basal ice for millions of years at the center of the ice sheet at Summit, Greenland. This finding suggests ice sheet stability through the Pleistocene (i.e., the past 2.7 million years). The preservation of this soil implies that the ice has been non-erosive and frozen to the bed for much of that time, that there was no substantial exposure of central Greenland once the ice sheet became fully established, and that preglacial landscapes can remain preserved for long periods under continental ice sheets Other/Unknown Material Greenland Ice Sheet NASA Technical Reports Server (NTRS) Greenland |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Crosby, Benjamin T. Lini, Andrea Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas Allen Rood, Dylan H. Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
topic_facet |
Earth Resources and Remote Sensing |
description |
Continental ice sheets typically sculpt landscapes via erosion; under certain conditions, ancient landscapes can be preserved beneath ice and can survive extensive and repeated glaciation. We used concentrations of atmospherically produced cosmogenic beryllium-10, carbon, and nitrogen to show that ancient soil has been preserved in basal ice for millions of years at the center of the ice sheet at Summit, Greenland. This finding suggests ice sheet stability through the Pleistocene (i.e., the past 2.7 million years). The preservation of this soil implies that the ice has been non-erosive and frozen to the bed for much of that time, that there was no substantial exposure of central Greenland once the ice sheet became fully established, and that preglacial landscapes can remain preserved for long periods under continental ice sheets |
format |
Other/Unknown Material |
author |
Crosby, Benjamin T. Lini, Andrea Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas Allen Rood, Dylan H. |
author_facet |
Crosby, Benjamin T. Lini, Andrea Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas Allen Rood, Dylan H. |
author_sort |
Crosby, Benjamin T. |
title |
Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
title_short |
Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
title_full |
Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
title_fullStr |
Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
title_full_unstemmed |
Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
title_sort |
preservation of a preglacial landscape under the center of the greenland ice sheet |
publishDate |
2014 |
url |
http://hdl.handle.net/2060/20150001448 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
CASI |
op_relation |
Document ID: 20150001448 http://hdl.handle.net/2060/20150001448 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766015100324413440 |