Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance
Pliocene-Quaternary marine sediments from Wilkes Land continental rise were investigated using clay mineral analysis and quartz grain surface texture observations. The studied piston cores were collected during a geophysical and geological survey in the framework of the Italian and Australian WEGA P...
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ftunivsiena:oai:usiena-air.unisi.it:11365/6747 2024-04-21T07:47:32+00:00 Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance DAMIANI, D. GIORGETTI, G. TURBANTI, I. Damiani, D. Giorgetti, G. Turbanti, I. 2006 STAMPA http://hdl.handle.net/11365/6747 https://doi.org/10.1016/j.margeo.2005.11.002 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000235861400007 volume:226 issue:3-4 firstpage:281 lastpage:295 numberofpages:15 journal:MARINE GEOLOGY http://hdl.handle.net/11365/6747 doi:10.1016/j.margeo.2005.11.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-32544440185 info:eu-repo/semantics/closedAccess Antarctica Clay mineral Marine sediment Quartz grain Wilkes Land continental rise info:eu-repo/semantics/article 2006 ftunivsiena https://doi.org/10.1016/j.margeo.2005.11.002 2024-03-28T00:42:44Z Pliocene-Quaternary marine sediments from Wilkes Land continental rise were investigated using clay mineral analysis and quartz grain surface texture observations. The studied piston cores were collected during a geophysical and geological survey in the framework of the Italian and Australian WEGA Project. The cores were collected along two transects crossing the channel-mound system that characterizes the Wilkes Land continental rise. Massive and laminated facies were recognized in these sedimentary sequences. The clay mineral assemblages are dominated by illite. Smectite and chlorite occur in intermediate amounts, whereas kaolinite is scarce. Illite derives from the hinterland of the Mertz and Ninnis glaciers. Smectite and kaolinite derive from the Ross Sea area and they are transported by westward marine bottom currents. Chlorite is derived both from the adjacent continent and from the Victoria Land. Different concentrations of individual clay minerals in the massive and laminated facies are controlled by the interplay between different source areas and the main sedimentary processes. Glacial and eolian quartz grains prevail in the massive units indicating short transportation and rapid deposition from melting ices, with no further significant transport action by marine currents. In the laminated facies the high amount of quartz grains affected by high-energy subaqueous transport features are related both to turbiditic processes and to bottom current transport. © 2005 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ross Sea Victoria Land Wilkes Land Università degli Studi di Siena: USiena air Marine Geology 226 3-4 281 295 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Antarctica Clay mineral Marine sediment Quartz grain Wilkes Land continental rise |
spellingShingle |
Antarctica Clay mineral Marine sediment Quartz grain Wilkes Land continental rise DAMIANI, D. GIORGETTI, G. TURBANTI, I. Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
topic_facet |
Antarctica Clay mineral Marine sediment Quartz grain Wilkes Land continental rise |
description |
Pliocene-Quaternary marine sediments from Wilkes Land continental rise were investigated using clay mineral analysis and quartz grain surface texture observations. The studied piston cores were collected during a geophysical and geological survey in the framework of the Italian and Australian WEGA Project. The cores were collected along two transects crossing the channel-mound system that characterizes the Wilkes Land continental rise. Massive and laminated facies were recognized in these sedimentary sequences. The clay mineral assemblages are dominated by illite. Smectite and chlorite occur in intermediate amounts, whereas kaolinite is scarce. Illite derives from the hinterland of the Mertz and Ninnis glaciers. Smectite and kaolinite derive from the Ross Sea area and they are transported by westward marine bottom currents. Chlorite is derived both from the adjacent continent and from the Victoria Land. Different concentrations of individual clay minerals in the massive and laminated facies are controlled by the interplay between different source areas and the main sedimentary processes. Glacial and eolian quartz grains prevail in the massive units indicating short transportation and rapid deposition from melting ices, with no further significant transport action by marine currents. In the laminated facies the high amount of quartz grains affected by high-energy subaqueous transport features are related both to turbiditic processes and to bottom current transport. © 2005 Elsevier B.V. All rights reserved. |
author2 |
Damiani, D. Giorgetti, G. Turbanti, I. |
format |
Article in Journal/Newspaper |
author |
DAMIANI, D. GIORGETTI, G. TURBANTI, I. |
author_facet |
DAMIANI, D. GIORGETTI, G. TURBANTI, I. |
author_sort |
DAMIANI, D. |
title |
Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
title_short |
Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
title_full |
Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
title_fullStr |
Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
title_full_unstemmed |
Clay mineral fluctuations and surface textural analysis of quartz grains in Pliocene-Quaternary marine sediments from Wilkes Land continental rise (East-Antarctica): Palaeoenvironmental significance |
title_sort |
clay mineral fluctuations and surface textural analysis of quartz grains in pliocene-quaternary marine sediments from wilkes land continental rise (east-antarctica): palaeoenvironmental significance |
publishDate |
2006 |
url |
http://hdl.handle.net/11365/6747 https://doi.org/10.1016/j.margeo.2005.11.002 |
genre |
Antarc* Antarctica East Antarctica Ross Sea Victoria Land Wilkes Land |
genre_facet |
Antarc* Antarctica East Antarctica Ross Sea Victoria Land Wilkes Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000235861400007 volume:226 issue:3-4 firstpage:281 lastpage:295 numberofpages:15 journal:MARINE GEOLOGY http://hdl.handle.net/11365/6747 doi:10.1016/j.margeo.2005.11.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-32544440185 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2005.11.002 |
container_title |
Marine Geology |
container_volume |
226 |
container_issue |
3-4 |
container_start_page |
281 |
op_container_end_page |
295 |
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