Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254
Grain-size analyses by sieve and Sedigraph are presented for 115 samples of core from CRP-3, 12 km off the coast of south Victoria Land. The data provide a useful check on visual core descriptions. The geographic setting for the strata sampled, some 790 m of early Oligocene nearshore marine sediment...
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ftdatacite:10.1594/pangaea.510763 2023-05-15T13:47:06+02:00 Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 Barrett, Peter J 2001 application/zip https://dx.doi.org/10.1594/pangaea.510763 https://doi.pangaea.de/10.1594/PANGAEA.510763 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-3 Sampling/drilling from ice Cape Roberts Project CRP Collection article Supplementary Collection of Datasets 2001 ftdatacite https://doi.org/10.1594/pangaea.510763 2021-11-05T12:55:41Z Grain-size analyses by sieve and Sedigraph are presented for 115 samples of core from CRP-3, 12 km off the coast of south Victoria Land. The data provide a useful check on visual core descriptions. The geographic setting for the strata sampled, some 790 m of early Oligocene nearshore marine sediments with a persistent glacial influence, is reviewed, and sediment textures interpreted in that context. Sand textures from the CRP-3 samples in the lower part of the core suggest that deposition was initially primarily wave-dominated, but that at times the influence of the waves was over-ridden by episodes of rapid sedimentation. Sedimentary cycles, recognised in the visual description of the core above 485 mbsf, show an increasing proportion of mudstone in the middle of each cycle above 330 mbsf that is interpreted to record periodic sedimentation in deeper water. Sandstone textures in the lower and upper parts of each cycle are interpreted to record departure from and return to shoreface deposition with changes in sea level. Mudstone textures above 176 mbsf indicate sedimentation below wave base. Many of the textures in both sand and mud samples show the coarse 'tail' characteristic of ice-rafted debris, but others do not, indicating ice-free periods. Many sandstones below c. 200 mbsf have virtually no silt, but significant amounts of clay (6 to 17%) that is thought to be of post-depositional origin. 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) Barrett ENVELOPE(-126.773,-126.773,54.428,54.428) |
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-3 Sampling/drilling from ice Cape Roberts Project CRP |
spellingShingle |
Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP Barrett, Peter J Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
topic_facet |
Core wireline system CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
description |
Grain-size analyses by sieve and Sedigraph are presented for 115 samples of core from CRP-3, 12 km off the coast of south Victoria Land. The data provide a useful check on visual core descriptions. The geographic setting for the strata sampled, some 790 m of early Oligocene nearshore marine sediments with a persistent glacial influence, is reviewed, and sediment textures interpreted in that context. Sand textures from the CRP-3 samples in the lower part of the core suggest that deposition was initially primarily wave-dominated, but that at times the influence of the waves was over-ridden by episodes of rapid sedimentation. Sedimentary cycles, recognised in the visual description of the core above 485 mbsf, show an increasing proportion of mudstone in the middle of each cycle above 330 mbsf that is interpreted to record periodic sedimentation in deeper water. Sandstone textures in the lower and upper parts of each cycle are interpreted to record departure from and return to shoreface deposition with changes in sea level. Mudstone textures above 176 mbsf indicate sedimentation below wave base. Many of the textures in both sand and mud samples show the coarse 'tail' characteristic of ice-rafted debris, but others do not, indicating ice-free periods. Many sandstones below c. 200 mbsf have virtually no silt, but significant amounts of clay (6 to 17%) that is thought to be of post-depositional origin. |
format |
Article in Journal/Newspaper |
author |
Barrett, Peter J |
author_facet |
Barrett, Peter J |
author_sort |
Barrett, Peter J |
title |
Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
title_short |
Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
title_full |
Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
title_fullStr |
Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
title_full_unstemmed |
Grain size analysis of sediment core CRP-3 from the Ross Sea, Antarctica, supplement to: Barrett, Peter J (2001): Grain-size analysis of samples from Cape Roberts core CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(3), 245-254 |
title_sort |
grain size analysis of sediment core crp-3 from the ross sea, antarctica, supplement to: barrett, peter j (2001): grain-size analysis of samples from cape roberts core crp-3, victoria land basin, antarctica. terra antartica, 8(3), 245-254 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2001 |
url |
https://dx.doi.org/10.1594/pangaea.510763 https://doi.pangaea.de/10.1594/PANGAEA.510763 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(-126.773,-126.773,54.428,54.428) |
geographic |
Ross Sea Victoria Land Cape Roberts Barrett |
geographic_facet |
Ross Sea Victoria Land Cape Roberts Barrett |
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.510763 |
_version_ |
1766246330708000768 |