Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274
Clasts from the Cape Roberts Project cores CRP-2/2A and CRP-3 provide indications of glacially influenced depositional environments in Oligocene and Miocene strata in the western Victoria Land Basin, Antarctica. CRP-2/2A is interpreted to represent strongly glacially influenced, unconformity bound d...
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ftdatacite:10.1594/pangaea.510764 2023-05-15T13:47:06+02:00 Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 Atkins, Cliff 2001 application/zip https://dx.doi.org/10.1594/pangaea.510764 https://doi.pangaea.de/10.1594/PANGAEA.510764 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP Collection article Supplementary Collection of Datasets 2001 ftdatacite https://doi.org/10.1594/pangaea.510764 2021-11-05T12:55:41Z Clasts from the Cape Roberts Project cores CRP-2/2A and CRP-3 provide indications of glacially influenced depositional environments in Oligocene and Miocene strata in the western Victoria Land Basin, Antarctica. CRP-2/2A is interpreted to represent strongly glacially influenced, unconformity bound depositional sequences produced by repeated advance and retreat of floating and grounded ice across the shelf. A similar interpretation is extended to the upper 330 meters of the CRP-3 core, but the lower part of the core records shallow marine deposition with significantly less glacial influence. Clast shape analysis from selected coarse-grained facies throughout the cored interval indicates that most clasts are glacially sourced, with little distinction between diamictite and conglomeratic facies. Three dimensional clast fabric analysis from units immediately above sequence boundaries generally display weak or random fabrics and do not suggest that grounded ice actually reached the drillsite at these intervals. Striated and outsized clasts present in fine-grained lithofacies throughout the cores provide further evidence of sub-glacially transported sediment and iceberg rafting. The distribution of these striated and out-sized clasts indicate that a significant glacial influence persisted through most of the time represented by the cores with glaciers actively calving at sea-level introducing ice-berg rafted glacial debris even in the earliest Oligocene. Article in Journal/Newspaper Antarc* Antarctica antartic* Ross Sea Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Ross Sea Victoria Land Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
spellingShingle |
Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP Atkins, Cliff Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
topic_facet |
Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
description |
Clasts from the Cape Roberts Project cores CRP-2/2A and CRP-3 provide indications of glacially influenced depositional environments in Oligocene and Miocene strata in the western Victoria Land Basin, Antarctica. CRP-2/2A is interpreted to represent strongly glacially influenced, unconformity bound depositional sequences produced by repeated advance and retreat of floating and grounded ice across the shelf. A similar interpretation is extended to the upper 330 meters of the CRP-3 core, but the lower part of the core records shallow marine deposition with significantly less glacial influence. Clast shape analysis from selected coarse-grained facies throughout the cored interval indicates that most clasts are glacially sourced, with little distinction between diamictite and conglomeratic facies. Three dimensional clast fabric analysis from units immediately above sequence boundaries generally display weak or random fabrics and do not suggest that grounded ice actually reached the drillsite at these intervals. Striated and outsized clasts present in fine-grained lithofacies throughout the cores provide further evidence of sub-glacially transported sediment and iceberg rafting. The distribution of these striated and out-sized clasts indicate that a significant glacial influence persisted through most of the time represented by the cores with glaciers actively calving at sea-level introducing ice-berg rafted glacial debris even in the earliest Oligocene. |
format |
Article in Journal/Newspaper |
author |
Atkins, Cliff |
author_facet |
Atkins, Cliff |
author_sort |
Atkins, Cliff |
title |
Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
title_short |
Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
title_full |
Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
title_fullStr |
Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
title_full_unstemmed |
Facies distribution in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Atkins, Cliff (2001): Glacial influence from clast features in Oligocene and Miocene stata cored in CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 263-274 |
title_sort |
facies distribution in crp sediment cores from the ross sea, antarctica, supplement to: atkins, cliff (2001): glacial influence from clast features in oligocene and miocene stata cored in crp-2/2a and crp-3, victoria land basin, antarctica. terra antartica, 8(3), 263-274 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2001 |
url |
https://dx.doi.org/10.1594/pangaea.510764 https://doi.pangaea.de/10.1594/PANGAEA.510764 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Ross Sea Victoria Land Cape Roberts |
geographic_facet |
Ross Sea Victoria Land Cape Roberts |
genre |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica antartic* Ross Sea Victoria Land |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.510764 |
_version_ |
1766246330907230208 |