Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica
Thirty-nine medium and fine grained sandstones from between 19,26 and 147,23 mbsf in the Cape Roberts-l core (CRP-1) were analysed for 10 major and 16 trace elements. Using whole-lock compositions, 9 samples were selected for analyses of mineral and glass grains by energy dispersive electron microsc...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.510729 2023-05-15T13:42:09+02:00 Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica Armienti, Pietro Messiga, Bruno Vannucci, R LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 1998-08-29 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.510729 https://doi.org/10.1594/PANGAEA.510729 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.510729 https://doi.org/10.1594/PANGAEA.510729 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Armienti, Pietro; Messiga, Bruno; Vannucci, R (1998): Sand provenance from major and trace element analyses of bulk rock and sand grains. Terra Antartica, 5(3), 589-599, hdl:10013/epic.28346.d001 16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.510729 2023-01-20T07:30:59Z Thirty-nine medium and fine grained sandstones from between 19,26 and 147,23 mbsf in the Cape Roberts-l core (CRP-1) were analysed for 10 major and 16 trace elements. Using whole-lock compositions, 9 samples were selected for analyses of mineral and glass grains by energy dispersive electron microscope. Laser-Ablation Mass-Spectrometry was used to determine rare earth elements and 14 additional trace elements in glass shards, pyroxenes and feldspars in order to examine their contribution to the bulk rock chemistry. Geochemical data reveal the major contribution played by the Granite Harbour Intrusives to the whole rock composition, even if a significant input is supplied by McMurdo volcanics and Ferrar dolerite pyroxenes McMurdo volcanics were studied in detail; they appeal to derive from a variety of litologies, and a dominant role of wind transpoitation from exposures of volcanic rocks may be inferred from the contemporary occurrence of different compositions at all depths. Only at 116.55 mbsf was a thin layer of tephra found, linked to an explosive eruption McMurdo volcanic rocks exhibit larger abundances at depths above 62 mbsf, in correspondence with the onset of volcanic activity in the McMurdo Sound area. From 62 mbsf to the bottom of the core, McMurdo volcanics are less abundant and probably issued from some centres in the McMurdo Sound region. However, available data do not allow the exclusion of wind transport from some eruptive centres active in north Victoria Land at the beginning of the Miocene Epoch. Dataset Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land PANGAEA - Data Publisher for Earth & Environmental Science Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Granite Harbour ENVELOPE(162.733,162.733,-76.883,-76.883) McMurdo Sound Roberts Cape ENVELOPE(163.200,163.200,-77.033,-77.033) Ross Sea Victoria Land ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
spellingShingle |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Armienti, Pietro Messiga, Bruno Vannucci, R Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
topic_facet |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
description |
Thirty-nine medium and fine grained sandstones from between 19,26 and 147,23 mbsf in the Cape Roberts-l core (CRP-1) were analysed for 10 major and 16 trace elements. Using whole-lock compositions, 9 samples were selected for analyses of mineral and glass grains by energy dispersive electron microscope. Laser-Ablation Mass-Spectrometry was used to determine rare earth elements and 14 additional trace elements in glass shards, pyroxenes and feldspars in order to examine their contribution to the bulk rock chemistry. Geochemical data reveal the major contribution played by the Granite Harbour Intrusives to the whole rock composition, even if a significant input is supplied by McMurdo volcanics and Ferrar dolerite pyroxenes McMurdo volcanics were studied in detail; they appeal to derive from a variety of litologies, and a dominant role of wind transpoitation from exposures of volcanic rocks may be inferred from the contemporary occurrence of different compositions at all depths. Only at 116.55 mbsf was a thin layer of tephra found, linked to an explosive eruption McMurdo volcanic rocks exhibit larger abundances at depths above 62 mbsf, in correspondence with the onset of volcanic activity in the McMurdo Sound area. From 62 mbsf to the bottom of the core, McMurdo volcanics are less abundant and probably issued from some centres in the McMurdo Sound region. However, available data do not allow the exclusion of wind transport from some eruptive centres active in north Victoria Land at the beginning of the Miocene Epoch. |
format |
Dataset |
author |
Armienti, Pietro Messiga, Bruno Vannucci, R |
author_facet |
Armienti, Pietro Messiga, Bruno Vannucci, R |
author_sort |
Armienti, Pietro |
title |
Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
title_short |
Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
title_full |
Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
title_fullStr |
Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
title_full_unstemmed |
Geochemistry of bulk samples and various minerals of sediment core CRP-1 from the Ross Sea, Antarctica |
title_sort |
geochemistry of bulk samples and various minerals of sediment core crp-1 from the ross sea, antarctica |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.510729 https://doi.org/10.1594/PANGAEA.510729 |
op_coverage |
LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(162.733,162.733,-76.883,-76.883) ENVELOPE(163.200,163.200,-77.033,-77.033) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
geographic |
Cape Roberts Granite Harbour McMurdo Sound Roberts Cape Ross Sea Victoria Land |
geographic_facet |
Cape Roberts Granite Harbour McMurdo Sound Roberts Cape Ross Sea Victoria Land |
genre |
Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica McMurdo Sound Ross Sea Victoria Land |
op_source |
Supplement to: Armienti, Pietro; Messiga, Bruno; Vannucci, R (1998): Sand provenance from major and trace element analyses of bulk rock and sand grains. Terra Antartica, 5(3), 589-599, hdl:10013/epic.28346.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.510729 https://doi.org/10.1594/PANGAEA.510729 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.510729 |
_version_ |
1766163106976759808 |