Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica
Abstract This paper presents a detailed study on the textural and geochemical characteristics of the proglacial sediments near the edge of modern Nelson Ice Cap, Antarctica. The grain size distributions of the proglacial sediments are characteristic of glacigenic deposits, but very different from th...
Published in: | Acta Geologica Sinica - English Edition |
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crwiley:10.1111/j.1755-6724.2004.tb00219.x 2024-09-09T19:04:14+00:00 Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica Xiaodong, LIU Liguang, SUN Xuebin, YIN 2004 http://dx.doi.org/10.1111/j.1755-6724.2004.tb00219.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-6724.2004.tb00219.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-6724.2004.tb00219.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 78, issue 4, page 970-981 ISSN 1000-9515 1755-6724 journal-article 2004 crwiley https://doi.org/10.1111/j.1755-6724.2004.tb00219.x 2024-07-25T04:19:36Z Abstract This paper presents a detailed study on the textural and geochemical characteristics of the proglacial sediments near the edge of modern Nelson Ice Cap, Antarctica. The grain size distributions of the proglacial sediments are characteristic of glacigenic deposits, but very different from those of aeolian and lacustrine sediments. Moreover, the grain size distributions of the proglacial sediments are fractal with a dimension of about 2.9, and the fractal dimensions can be used as another summary statistical parameter for quantifying the relative amounts of coarse and fine materials. Correlations between the absolute element abundances of the proglacial sediments are very weak due to mineral partitioning and other effects of glacial processes, but correlations between the element/Rb ratios are statistically significant. This finding indicates that element/Rb ratios can be used to reduce or eliminate the effects of glacial processes, evaluate geochemical data and determine the sediment provenance in the foreland of Antarctic glacier. Comparisons on the element concentrations among different environments suggest that the proglacial sediments are derived predominantly from local bedrocks and appear to be natural in origin. Thus these natural sediments can be used to study chemical weathering in the proglacial foreland of modern glacier. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice cap Wiley Online Library Antarctic Acta Geologica Sinica - English Edition 78 4 970 981 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract This paper presents a detailed study on the textural and geochemical characteristics of the proglacial sediments near the edge of modern Nelson Ice Cap, Antarctica. The grain size distributions of the proglacial sediments are characteristic of glacigenic deposits, but very different from those of aeolian and lacustrine sediments. Moreover, the grain size distributions of the proglacial sediments are fractal with a dimension of about 2.9, and the fractal dimensions can be used as another summary statistical parameter for quantifying the relative amounts of coarse and fine materials. Correlations between the absolute element abundances of the proglacial sediments are very weak due to mineral partitioning and other effects of glacial processes, but correlations between the element/Rb ratios are statistically significant. This finding indicates that element/Rb ratios can be used to reduce or eliminate the effects of glacial processes, evaluate geochemical data and determine the sediment provenance in the foreland of Antarctic glacier. Comparisons on the element concentrations among different environments suggest that the proglacial sediments are derived predominantly from local bedrocks and appear to be natural in origin. Thus these natural sediments can be used to study chemical weathering in the proglacial foreland of modern glacier. |
format |
Article in Journal/Newspaper |
author |
Xiaodong, LIU Liguang, SUN Xuebin, YIN |
spellingShingle |
Xiaodong, LIU Liguang, SUN Xuebin, YIN Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
author_facet |
Xiaodong, LIU Liguang, SUN Xuebin, YIN |
author_sort |
Xiaodong, LIU |
title |
Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
title_short |
Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
title_full |
Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
title_fullStr |
Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
title_full_unstemmed |
Textural and Geochemical Characteristics of Proglacial Sediments: A Case Study in the Foreland of the Nelson Ice Cap, Antarctica |
title_sort |
textural and geochemical characteristics of proglacial sediments: a case study in the foreland of the nelson ice cap, antarctica |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.1755-6724.2004.tb00219.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-6724.2004.tb00219.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-6724.2004.tb00219.x |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice cap |
genre_facet |
Antarc* Antarctic Antarctica Ice cap |
op_source |
Acta Geologica Sinica - English Edition volume 78, issue 4, page 970-981 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1755-6724.2004.tb00219.x |
container_title |
Acta Geologica Sinica - English Edition |
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78 |
container_issue |
4 |
container_start_page |
970 |
op_container_end_page |
981 |
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1809818234891796480 |