Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence
In the Camp Century core, the difference in oxygen isotope ratio between Wisconsin and Holocene ice seems too large to be purely a climatic effect. A more likely interpretation is that the Wisconsin ice originated at an elevation of at least 500 m above the present station. Total gas content measure...
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Cambridge University Press (CUP)
1977
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crcambridgeupr:10.1016/0033-5894(77)90044-8 2024-09-15T18:04:46+00:00 Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence Paterson, W.S.B. 1977 http://dx.doi.org/10.1016/0033-5894(77)90044-8 http://api.elsevier.com/content/article/PII:0033589477900448?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589477900448?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400028684 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 8, issue 2, page 180-190 ISSN 0033-5894 1096-0287 journal-article 1977 crcambridgeupr https://doi.org/10.1016/0033-5894(77)90044-8 2024-07-31T04:04:17Z In the Camp Century core, the difference in oxygen isotope ratio between Wisconsin and Holocene ice seems too large to be purely a climatic effect. A more likely interpretation is that the Wisconsin ice originated at an elevation of at least 500 m above the present station. Total gas content measurements on the core suggest that the elevation difference was about 1300 m. These results are inconsistent with the present ice flow pattern. Three hypotheses are considered: (1) The Wisconsin ice originated near the crest of a high ridge connecting the Greenland ice sheet with an ice sheet on Ellesmere Island. (2) The Wisconsin flow pattern was similar to the present one but ice was much thicker and the ice margin considerably in advance of its present position. (3) The Wisconsin ice originated near the main Greenland ice divide whereas the Holocene ice originates within 50 km of the station. Glacial-geological data are sparse but do not appear to support the first hypothesis, while the uplift data have been interpreted in two widely different ways. The second hypothesis might explain the oxygen isotope values but not the gas content measurements. The third hypothesis is thus considered the most likely one. Differences between Wisconsin and Holocene flow patterns might result from changes in positions of the ice margins as a consequence of lowered sea level in the Wisconsin. Article in Journal/Newspaper Ellesmere Island Greenland Ice Sheet Cambridge University Press Quaternary Research 8 2 180 190 |
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Cambridge University Press |
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English |
description |
In the Camp Century core, the difference in oxygen isotope ratio between Wisconsin and Holocene ice seems too large to be purely a climatic effect. A more likely interpretation is that the Wisconsin ice originated at an elevation of at least 500 m above the present station. Total gas content measurements on the core suggest that the elevation difference was about 1300 m. These results are inconsistent with the present ice flow pattern. Three hypotheses are considered: (1) The Wisconsin ice originated near the crest of a high ridge connecting the Greenland ice sheet with an ice sheet on Ellesmere Island. (2) The Wisconsin flow pattern was similar to the present one but ice was much thicker and the ice margin considerably in advance of its present position. (3) The Wisconsin ice originated near the main Greenland ice divide whereas the Holocene ice originates within 50 km of the station. Glacial-geological data are sparse but do not appear to support the first hypothesis, while the uplift data have been interpreted in two widely different ways. The second hypothesis might explain the oxygen isotope values but not the gas content measurements. The third hypothesis is thus considered the most likely one. Differences between Wisconsin and Holocene flow patterns might result from changes in positions of the ice margins as a consequence of lowered sea level in the Wisconsin. |
format |
Article in Journal/Newspaper |
author |
Paterson, W.S.B. |
spellingShingle |
Paterson, W.S.B. Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
author_facet |
Paterson, W.S.B. |
author_sort |
Paterson, W.S.B. |
title |
Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
title_short |
Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
title_full |
Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
title_fullStr |
Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
title_full_unstemmed |
Extent of the Late-Wisconsin Glaciation in Northwest Greenland and Northern Ellesmere Island: A Review of the Glaciological and Geological Evidence |
title_sort |
extent of the late-wisconsin glaciation in northwest greenland and northern ellesmere island: a review of the glaciological and geological evidence |
publisher |
Cambridge University Press (CUP) |
publishDate |
1977 |
url |
http://dx.doi.org/10.1016/0033-5894(77)90044-8 http://api.elsevier.com/content/article/PII:0033589477900448?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589477900448?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400028684 |
genre |
Ellesmere Island Greenland Ice Sheet |
genre_facet |
Ellesmere Island Greenland Ice Sheet |
op_source |
Quaternary Research volume 8, issue 2, page 180-190 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(77)90044-8 |
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Quaternary Research |
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8 |
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2 |
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180 |
op_container_end_page |
190 |
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1810442380457803776 |