Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ...
A core from the Mid-Atlantic Ridge at 43.5°N and ~3 km water depth shows distinct evidence of the deglacial events known as Heinrich event 1 (probably the marine equivalent of Oldest Dryas cooling in Europe) and the Younger Dryas. The Heinrich event, dated at three levels to between 14.3 and 15.0 ka...
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ftdatacite:10.1594/pangaea.729844 2024-09-15T18:20:42+00:00 Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... Keigwin, Lloyd D Lehman, Scott J 1994 application/zip https://dx.doi.org/10.1594/pangaea.729844 https://doi.pangaea.de/10.1594/PANGAEA.729844 en eng PANGAEA https://dx.doi.org/10.1029/94pa00032 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Piston corer Trigger corer CH8X Jean Charcot article Collection Supplementary Publication Series of Datasets 1994 ftdatacite https://doi.org/10.1594/pangaea.72984410.1029/94pa00032 2024-08-01T10:54:59Z A core from the Mid-Atlantic Ridge at 43.5°N and ~3 km water depth shows distinct evidence of the deglacial events known as Heinrich event 1 (probably the marine equivalent of Oldest Dryas cooling in Europe) and the Younger Dryas. The Heinrich event, dated at three levels to between 14.3 and 15.0 ka, is marked by a minimum in foraminifera per gram, by maxima in rates of sedimentation, ice rafted debris per gram, and relative abundance of N. pachyderma (s.), and by a delta18O minimum in planktonic foraminifera. The Younger Dryas event is marked by peak abundance of N. pachyderma (s.) and a planktonic delta18O maximum. Benthic foraminiferal delta13C reaches minimum values during both the Heinrich event and the Younger Dryas. Our data indicate pronounced changes in surface water properties were coupled with reduced production of North Atlantic Deep Water at each of these times. ... : Supplement to: Keigwin, Lloyd D; Lehman, Scott J (1994): Deep circulation change linked to Heinrich event 1 and Younger Dryas in a middepth North Atlantic core. Paleoceanography, 9(2), 185-194 ... Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Planktonic foraminifera DataCite |
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Open Polar |
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DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Piston corer Trigger corer CH8X Jean Charcot |
spellingShingle |
Piston corer Trigger corer CH8X Jean Charcot Keigwin, Lloyd D Lehman, Scott J Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
topic_facet |
Piston corer Trigger corer CH8X Jean Charcot |
description |
A core from the Mid-Atlantic Ridge at 43.5°N and ~3 km water depth shows distinct evidence of the deglacial events known as Heinrich event 1 (probably the marine equivalent of Oldest Dryas cooling in Europe) and the Younger Dryas. The Heinrich event, dated at three levels to between 14.3 and 15.0 ka, is marked by a minimum in foraminifera per gram, by maxima in rates of sedimentation, ice rafted debris per gram, and relative abundance of N. pachyderma (s.), and by a delta18O minimum in planktonic foraminifera. The Younger Dryas event is marked by peak abundance of N. pachyderma (s.) and a planktonic delta18O maximum. Benthic foraminiferal delta13C reaches minimum values during both the Heinrich event and the Younger Dryas. Our data indicate pronounced changes in surface water properties were coupled with reduced production of North Atlantic Deep Water at each of these times. ... : Supplement to: Keigwin, Lloyd D; Lehman, Scott J (1994): Deep circulation change linked to Heinrich event 1 and Younger Dryas in a middepth North Atlantic core. Paleoceanography, 9(2), 185-194 ... |
format |
Article in Journal/Newspaper |
author |
Keigwin, Lloyd D Lehman, Scott J |
author_facet |
Keigwin, Lloyd D Lehman, Scott J |
author_sort |
Keigwin, Lloyd D |
title |
Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
title_short |
Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
title_full |
Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
title_fullStr |
Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
title_full_unstemmed |
Age determination, foraminiferal abundance and stable isotope ratios of sediment core CH82-20 ... |
title_sort |
age determination, foraminiferal abundance and stable isotope ratios of sediment core ch82-20 ... |
publisher |
PANGAEA |
publishDate |
1994 |
url |
https://dx.doi.org/10.1594/pangaea.729844 https://doi.pangaea.de/10.1594/PANGAEA.729844 |
genre |
North Atlantic Deep Water North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Deep Water North Atlantic Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1029/94pa00032 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.72984410.1029/94pa00032 |
_version_ |
1810459090547113984 |