Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet
Deep Freeze Geologists usually consider glaciers and ice sheets to be gigantic abrasives, scouring the ground beneath them and carving out relief on the underlying landscapes. Bierman et al. (p. 402 , published online 17 April) show that this is not always the case. They found that the silt at the v...
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Online Access: | http://dx.doi.org/10.1126/science.1249047 https://www.science.org/doi/pdf/10.1126/science.1249047 |
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craaas:10.1126/science.1249047 2024-09-15T18:09:01+00:00 Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas A. Lini, Andrea Crosby, Benjamin T. Rood, Dylan H. 2014 http://dx.doi.org/10.1126/science.1249047 https://www.science.org/doi/pdf/10.1126/science.1249047 en eng American Association for the Advancement of Science (AAAS) Science volume 344, issue 6182, page 402-405 ISSN 0036-8075 1095-9203 journal-article 2014 craaas https://doi.org/10.1126/science.1249047 2024-08-29T04:01:04Z Deep Freeze Geologists usually consider glaciers and ice sheets to be gigantic abrasives, scouring the ground beneath them and carving out relief on the underlying landscapes. Bierman et al. (p. 402 , published online 17 April) show that this is not always the case. They found that the silt at the very bottom of the Greenland Ice Sheet Project 2 core contained significant amounts of beryllium-10, an isotope produced in the atmosphere by cosmic rays and which adheres to soils when it is deposited on them. Hence, the dust at the bottom of the ice sheet indicates the persistence of a landscape under 3000 meters of glacial ice that is millions of years old. Article in Journal/Newspaper Greenland Greenland Ice Sheet Project Ice Sheet AAAS Resource Center (American Association for the Advancement of Science) Science 344 6182 402 405 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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English |
description |
Deep Freeze Geologists usually consider glaciers and ice sheets to be gigantic abrasives, scouring the ground beneath them and carving out relief on the underlying landscapes. Bierman et al. (p. 402 , published online 17 April) show that this is not always the case. They found that the silt at the very bottom of the Greenland Ice Sheet Project 2 core contained significant amounts of beryllium-10, an isotope produced in the atmosphere by cosmic rays and which adheres to soils when it is deposited on them. Hence, the dust at the bottom of the ice sheet indicates the persistence of a landscape under 3000 meters of glacial ice that is millions of years old. |
format |
Article in Journal/Newspaper |
author |
Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas A. Lini, Andrea Crosby, Benjamin T. Rood, Dylan H. |
spellingShingle |
Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas A. Lini, Andrea Crosby, Benjamin T. Rood, Dylan H. Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet |
author_facet |
Bierman, Paul R. Corbett, Lee B. Graly, Joseph A. Neumann, Thomas A. Lini, Andrea Crosby, Benjamin T. Rood, Dylan H. |
author_sort |
Bierman, Paul R. |
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 |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1126/science.1249047 https://www.science.org/doi/pdf/10.1126/science.1249047 |
genre |
Greenland Greenland Ice Sheet Project Ice Sheet |
genre_facet |
Greenland Greenland Ice Sheet Project Ice Sheet |
op_source |
Science volume 344, issue 6182, page 402-405 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1249047 |
container_title |
Science |
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344 |
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6182 |
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402 |
op_container_end_page |
405 |
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1810446396273197056 |