Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica
Abstract This work aims to analyze and compare the sedimentological data of Ellsworth Mountains, West Antarctica: Patriot/Independence Hills and Union Glacier, and how sedimentological data can be used to infer sediment entrainment. Particular attention was concentrated on morainic deposits. Remote...
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ftdoajarticles:oai:doaj.org/article:a40d24bc32654136ad77ec00cf891742 2023-05-15T13:45:23+02:00 Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica VANESSA COSTA KÁTIA K. ROSA ALLAN SANDES CAROLINE DELPUPO ROSEMARY VIEIRA 2022-04-01T00:00:00Z https://doi.org/10.1590/0001-3765202220210114 https://doaj.org/article/a40d24bc32654136ad77ec00cf891742 EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201107&tlng=en https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202220210114 https://doaj.org/article/a40d24bc32654136ad77ec00cf891742 Anais da Academia Brasileira de Ciências, Vol 94, Iss suppl 1 (2022) Antarctica Ellsworth Mountains sedimentology geochemistry glacial geomorphology Science Q article 2022 ftdoajarticles https://doi.org/10.1590/0001-3765202220210114 2022-12-31T08:39:58Z Abstract This work aims to analyze and compare the sedimentological data of Ellsworth Mountains, West Antarctica: Patriot/Independence Hills and Union Glacier, and how sedimentological data can be used to infer sediment entrainment. Particular attention was concentrated on morainic deposits. Remote sensing data was used in the identification of deposits and the ice flow; granulometric, morphoscopic, and geochemical analyses were applied to investigate the sedimentary origin and transport history. Sediment rich in Si Al, Fe, and Ca predominate in Independence Hills and Rossman Cove but Ca prevails in Elephant Head. CIA indicated low values, which depict low chemical weathering processes. X-ray diffraction reveals the presence of minerals that constitute the local rocks in the Union Glacier area, and from the unexposed basement rocks in Independence Hills. Principal Component Analysis and Cluster Analysis results suggest the sediment is related to the local rocks in the Union Glacier and distinct exotic sources in Independence Hills, associated with far-traveled sediment. It is also observed the influence of distinct processes of entrainment sediment on its granulometric and morphoscopic characteristics. Article in Journal/Newspaper Antarc* Antarctica Union Glacier West Antarctica Directory of Open Access Journals: DOAJ Articles Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Independence Hills ENVELOPE(-81.250,-81.250,-80.417,-80.417) Patriot Hills ENVELOPE(-81.333,-81.333,-80.333,-80.333) Rossman ENVELOPE(-82.800,-82.800,-79.783,-79.783) Union Glacier ENVELOPE(-82.500,-82.500,-79.750,-79.750) West Antarctica Anais da Academia Brasileira de Ciências 94 suppl 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
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Antarctica Ellsworth Mountains sedimentology geochemistry glacial geomorphology Science Q |
spellingShingle |
Antarctica Ellsworth Mountains sedimentology geochemistry glacial geomorphology Science Q VANESSA COSTA KÁTIA K. ROSA ALLAN SANDES CAROLINE DELPUPO ROSEMARY VIEIRA Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
topic_facet |
Antarctica Ellsworth Mountains sedimentology geochemistry glacial geomorphology Science Q |
description |
Abstract This work aims to analyze and compare the sedimentological data of Ellsworth Mountains, West Antarctica: Patriot/Independence Hills and Union Glacier, and how sedimentological data can be used to infer sediment entrainment. Particular attention was concentrated on morainic deposits. Remote sensing data was used in the identification of deposits and the ice flow; granulometric, morphoscopic, and geochemical analyses were applied to investigate the sedimentary origin and transport history. Sediment rich in Si Al, Fe, and Ca predominate in Independence Hills and Rossman Cove but Ca prevails in Elephant Head. CIA indicated low values, which depict low chemical weathering processes. X-ray diffraction reveals the presence of minerals that constitute the local rocks in the Union Glacier area, and from the unexposed basement rocks in Independence Hills. Principal Component Analysis and Cluster Analysis results suggest the sediment is related to the local rocks in the Union Glacier and distinct exotic sources in Independence Hills, associated with far-traveled sediment. It is also observed the influence of distinct processes of entrainment sediment on its granulometric and morphoscopic characteristics. |
format |
Article in Journal/Newspaper |
author |
VANESSA COSTA KÁTIA K. ROSA ALLAN SANDES CAROLINE DELPUPO ROSEMARY VIEIRA |
author_facet |
VANESSA COSTA KÁTIA K. ROSA ALLAN SANDES CAROLINE DELPUPO ROSEMARY VIEIRA |
author_sort |
VANESSA COSTA |
title |
Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
title_short |
Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
title_full |
Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
title_fullStr |
Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
title_full_unstemmed |
Sedimentary evidence of glacial entrainment at Patriot Hills and Union Glacier moraines, Ellsworth Mountains, West Antarctica |
title_sort |
sedimentary evidence of glacial entrainment at patriot hills and union glacier moraines, ellsworth mountains, west antarctica |
publisher |
Academia Brasileira de Ciências |
publishDate |
2022 |
url |
https://doi.org/10.1590/0001-3765202220210114 https://doaj.org/article/a40d24bc32654136ad77ec00cf891742 |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) ENVELOPE(-81.250,-81.250,-80.417,-80.417) ENVELOPE(-81.333,-81.333,-80.333,-80.333) ENVELOPE(-82.800,-82.800,-79.783,-79.783) ENVELOPE(-82.500,-82.500,-79.750,-79.750) |
geographic |
Ellsworth Mountains Independence Hills Patriot Hills Rossman Union Glacier West Antarctica |
geographic_facet |
Ellsworth Mountains Independence Hills Patriot Hills Rossman Union Glacier West Antarctica |
genre |
Antarc* Antarctica Union Glacier West Antarctica |
genre_facet |
Antarc* Antarctica Union Glacier West Antarctica |
op_source |
Anais da Academia Brasileira de Ciências, Vol 94, Iss suppl 1 (2022) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201107&tlng=en https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202220210114 https://doaj.org/article/a40d24bc32654136ad77ec00cf891742 |
op_doi |
https://doi.org/10.1590/0001-3765202220210114 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
94 |
container_issue |
suppl 1 |
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1766223451598618624 |