Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444
Stable isotope analyses of marine bivalve growth increment samples have been used to estimate early Oligocene (29.4 - 31.2) Ma and early Miocene (24.0 Ma) seafloor palaeotemperature from the southwestern continental margin of the Ross Sea. Measured d18O values average +2.5 ‰ in the early Miocene and...
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ftdatacite:10.1594/pangaea.510768 2023-05-15T13:47:06+02:00 Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 Lavelle, Mark Fielding, Christopher R Hall, Michael A 2001 application/zip https://dx.doi.org/10.1594/pangaea.510768 https://doi.pangaea.de/10.1594/PANGAEA.510768 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.510768 2021-11-05T12:55:41Z Stable isotope analyses of marine bivalve growth increment samples have been used to estimate early Oligocene (29.4 - 31.2) Ma and early Miocene (24.0 Ma) seafloor palaeotemperature from the southwestern continental margin of the Ross Sea. Measured d18O values average +2.5 ‰ in the early Miocene and range between +1.26 to +3.24 ‰ in the early Oligocene. The results show that palaeoceanographic conditions in McMurdo Sound during the mid-Cenozoic were significantly different from those of today. The minimum estimated spring through late summer seasonal temperature range was 3°C during the early Miocene and between 1 and 5°C during the early Oligocene. This compares to the equivalent modern day range of <0.5°C within the sound. Absolute seawater temperatures at <100 m depth were of the order of 5 to 7°C during both time slices, compared to modern day values of -1.4 to - 1.9°C in the same area. The results are in broad agreement with early Oligocene Mg/Ca temperature estimates from deep Atlantic foraminifera as well as estimates from local terrestrial palynology and palaeobotany. Article in Journal/Newspaper Antarc* Antarctica antartic* McMurdo Sound Ross Sea Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) McMurdo Sound Ross Sea Victoria Land |
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 Lavelle, Mark Fielding, Christopher R Hall, Michael A Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
topic_facet |
Core wireline system CRP-2 CRP-3 Sampling/drilling from ice Cape Roberts Project CRP |
description |
Stable isotope analyses of marine bivalve growth increment samples have been used to estimate early Oligocene (29.4 - 31.2) Ma and early Miocene (24.0 Ma) seafloor palaeotemperature from the southwestern continental margin of the Ross Sea. Measured d18O values average +2.5 ‰ in the early Miocene and range between +1.26 to +3.24 ‰ in the early Oligocene. The results show that palaeoceanographic conditions in McMurdo Sound during the mid-Cenozoic were significantly different from those of today. The minimum estimated spring through late summer seasonal temperature range was 3°C during the early Miocene and between 1 and 5°C during the early Oligocene. This compares to the equivalent modern day range of <0.5°C within the sound. Absolute seawater temperatures at <100 m depth were of the order of 5 to 7°C during both time slices, compared to modern day values of -1.4 to - 1.9°C in the same area. The results are in broad agreement with early Oligocene Mg/Ca temperature estimates from deep Atlantic foraminifera as well as estimates from local terrestrial palynology and palaeobotany. |
format |
Article in Journal/Newspaper |
author |
Lavelle, Mark Fielding, Christopher R Hall, Michael A |
author_facet |
Lavelle, Mark Fielding, Christopher R Hall, Michael A |
author_sort |
Lavelle, Mark |
title |
Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
title_short |
Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
title_full |
Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
title_fullStr |
Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
title_full_unstemmed |
Stable isotope ratios measured on molluscan from the CRP sediment cores in the Ross Sea, Antarctica, supplement to: Lavelle, Mark; Fielding, Christopher R; Hall, Michael A (2001): Molluscan stable isotope temperature estimates of the southwestern Ross Sea during the early Oligocene and early Miocene, CRP-2/2A and CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 439-444 |
title_sort |
stable isotope ratios measured on molluscan from the crp sediment cores in the ross sea, antarctica, supplement to: lavelle, mark; fielding, christopher r; hall, michael a (2001): molluscan stable isotope temperature estimates of the southwestern ross sea during the early oligocene and early miocene, crp-2/2a and crp-3, victoria land basin, antarctica. terra antartica, 8(4), 439-444 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2001 |
url |
https://dx.doi.org/10.1594/pangaea.510768 https://doi.pangaea.de/10.1594/PANGAEA.510768 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Cape Roberts McMurdo Sound Ross Sea Victoria Land |
geographic_facet |
Cape Roberts McMurdo Sound Ross Sea Victoria Land |
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.510768 |
_version_ |
1766246331678982144 |