Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422
Phytoliths (siliceous plant microfossils) have been recovered from Cenozoic sediments (c. 34 to 17 Ma) in the CRP-2/2A and CRP-3 drillholes cored off Cape Roberts, Victoria Land Basin, Antarctica. The phytolith assemblages are sparse, but well-preserved and dominated by spherical forms similar to th...
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Online Access: | https://dx.doi.org/10.1594/pangaea.510767 https://doi.pangaea.de/10.1594/PANGAEA.510767 |
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ftdatacite:10.1594/pangaea.510767 2023-05-15T13:47:06+02:00 Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 Thorn, Vanessa C 2001 application/zip https://dx.doi.org/10.1594/pangaea.510767 https://doi.pangaea.de/10.1594/PANGAEA.510767 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.510767 2021-11-05T12:55:41Z Phytoliths (siliceous plant microfossils) have been recovered from Cenozoic sediments (c. 34 to 17 Ma) in the CRP-2/2A and CRP-3 drillholes cored off Cape Roberts, Victoria Land Basin, Antarctica. The phytolith assemblages are sparse, but well-preserved and dominated by spherical forms similar to those of modern trees or shrubs. Rare phytoliths comparable to modern grass forms are also present. However, due to the paucity of phytolith data, any interpretations made are necessarily tentative. The assemblages of CRP-2/2A and the upper c. 250 m of CRP-3 are interpreted as representing a predominantly woody vegetation, including Nothofagus and Libocedrus with local areas of grass in the more exposed locations. A cool climate is interpreted to have prevailed throughout both cores. However, beneath c. 250 metres below sea floor in CRP-3, the dominant woody vegetation is supplemented by pockets of Palmae, ?Proteaceae and 'warm' climate grasses. This association represents vegetation growth in sheltered, moist sites – possibly north-facing mid-slopes or the coastal fringe. It may also represent remnant vegetation that grew in moist, temperate conditions during the Middle to Late Eocene, previously interpreted from the Southern McMurdo Sound erratics and lower part of the CIROS-1 drillhole. The phytolith analysis compares well to the terrestrial palynomorph record from both cores and provides additional independent taxonomic and climatic interpretations. Article in Journal/Newspaper Antarc* Antarctica antartic* McMurdo Sound Ross Sea Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Ross Sea Victoria Land McMurdo Sound 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 Thorn, Vanessa C Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
topic_facet |
Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
description |
Phytoliths (siliceous plant microfossils) have been recovered from Cenozoic sediments (c. 34 to 17 Ma) in the CRP-2/2A and CRP-3 drillholes cored off Cape Roberts, Victoria Land Basin, Antarctica. The phytolith assemblages are sparse, but well-preserved and dominated by spherical forms similar to those of modern trees or shrubs. Rare phytoliths comparable to modern grass forms are also present. However, due to the paucity of phytolith data, any interpretations made are necessarily tentative. The assemblages of CRP-2/2A and the upper c. 250 m of CRP-3 are interpreted as representing a predominantly woody vegetation, including Nothofagus and Libocedrus with local areas of grass in the more exposed locations. A cool climate is interpreted to have prevailed throughout both cores. However, beneath c. 250 metres below sea floor in CRP-3, the dominant woody vegetation is supplemented by pockets of Palmae, ?Proteaceae and 'warm' climate grasses. This association represents vegetation growth in sheltered, moist sites – possibly north-facing mid-slopes or the coastal fringe. It may also represent remnant vegetation that grew in moist, temperate conditions during the Middle to Late Eocene, previously interpreted from the Southern McMurdo Sound erratics and lower part of the CIROS-1 drillhole. The phytolith analysis compares well to the terrestrial palynomorph record from both cores and provides additional independent taxonomic and climatic interpretations. |
format |
Article in Journal/Newspaper |
author |
Thorn, Vanessa C |
author_facet |
Thorn, Vanessa C |
author_sort |
Thorn, Vanessa C |
title |
Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
title_short |
Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
title_full |
Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
title_fullStr |
Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
title_full_unstemmed |
Distribution of phytolithes in CRP sediment cores from the Ross Sea, Antarctica, supplement to: Thorn, Vanessa C (2001): Oligocene and early Miocene phytolits from CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 407-422 |
title_sort |
distribution of phytolithes in crp sediment cores from the ross sea, antarctica, supplement to: thorn, vanessa c (2001): oligocene and early miocene phytolits from crp-2/2a and crp-3, victoria land basin, antarctica. terra antartica, 8(4), 407-422 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2001 |
url |
https://dx.doi.org/10.1594/pangaea.510767 https://doi.pangaea.de/10.1594/PANGAEA.510767 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Ross Sea Victoria Land McMurdo Sound Cape Roberts |
geographic_facet |
Ross Sea Victoria Land McMurdo Sound Cape Roberts |
genre |
Antarc* Antarctica antartic* McMurdo Sound Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica antartic* McMurdo Sound 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.510767 |
_version_ |
1766246331499675648 |