(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2
Results from two deep sea cores from northeast of Newfoundland at 1251 and 2527 m water depth, respectively, indicate that during the time period from 160,000 to 10,000 years BP, ice rafting events in the Labrador Sea were accompanied by rapid variations in deep and surface water circulation. Twelve...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.842156 2023-05-15T16:30:22+02:00 (Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 Rasmussen, Tine Lander Oppo, Delia W Thomsen, Erik Lehman, Scott J MEDIAN LATITUDE: 49.019150 * MEDIAN LONGITUDE: -45.089500 * SOUTH-BOUND LATITUDE: 48.800000 * WEST-BOUND LONGITUDE: -45.090000 * NORTH-BOUND LATITUDE: 49.238300 * EAST-BOUND LONGITUDE: -45.089000 * MINIMUM DEPTH, sediment/rock: 0.16 m * MAXIMUM DEPTH, sediment/rock: 4.80 m 2003-01-29 text/tab-separated-values, 51 data points https://doi.pangaea.de/10.1594/PANGAEA.842156 https://doi.org/10.1594/PANGAEA.842156 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.842156 https://doi.org/10.1594/PANGAEA.842156 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rasmussen, Tine Lander; Oppo, Delia W; Thomsen, Erik; Lehman, Scott J (2003): Deep sea records from the southeast Labrador Sea: ocean circulation changes and ice-rafting events during the last 160,000 years. Paleoceanography, 18(1), 1018, https://doi.org/10.1029/2001PA000736 Age 14C milieu/reservoir corrected (-400 yr) dated dated standard error DEPTH sediment/rock Event label EW9302-JPC1 EW9302-JPC2 JPC Jumbo Piston Core Laboratory Labrador Sea Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.842156 https://doi.org/10.1029/2001PA000736 2023-01-20T09:05:10Z Results from two deep sea cores from northeast of Newfoundland at 1251 and 2527 m water depth, respectively, indicate that during the time period from 160,000 to 10,000 years BP, ice rafting events in the Labrador Sea were accompanied by rapid variations in deep and surface water circulation. Twelve ice-rafting events occurred, each coinciding with high concentrations of detrital carbonate and oxygen isotopic depletion of both surface and bottom waters. Eleven of these can be correlated with the North Atlantic Heinrich events H1–H11. The remaining very conspicuous ice-rafting event took place early in MIS substage 5e, at a time when the planktic faunal assemblage suggests marked warming of the sea surface. In the shallower core, benthic d13C values rise from a minimum during the deglaciation to peak substage 5e values following the last ice-rafting event, indicating that the ventilation of intermediate depths was renewed after the deglaciation was complete and continued throughout substage 5e. The benthic foraminifera suggest that this well-ventilated water mass was comparable to the modern Labrador Sea Water (LSW). The benthic faunas suggest that a relatively warm intermediate water mass entered the SE Labrador Sea during Heinrich events. Generally low benthic d13C values indicate that this water mass was poorly ventilated and rich in inorganic nutrients. Isotope data and benthic faunal distributions indicate that North Atlantic Deep Water (NADW) formed in the Norwegian-Greenland Sea reached the SE Labrador Sea between the Heinrich events. Dataset Greenland Greenland Sea Labrador Sea NADW Newfoundland North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Greenland Newfoundland ENVELOPE(-45.090000,-45.089000,49.238300,48.800000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age 14C milieu/reservoir corrected (-400 yr) dated dated standard error DEPTH sediment/rock Event label EW9302-JPC1 EW9302-JPC2 JPC Jumbo Piston Core Laboratory Labrador Sea |
spellingShingle |
Age 14C milieu/reservoir corrected (-400 yr) dated dated standard error DEPTH sediment/rock Event label EW9302-JPC1 EW9302-JPC2 JPC Jumbo Piston Core Laboratory Labrador Sea Rasmussen, Tine Lander Oppo, Delia W Thomsen, Erik Lehman, Scott J (Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
topic_facet |
Age 14C milieu/reservoir corrected (-400 yr) dated dated standard error DEPTH sediment/rock Event label EW9302-JPC1 EW9302-JPC2 JPC Jumbo Piston Core Laboratory Labrador Sea |
description |
Results from two deep sea cores from northeast of Newfoundland at 1251 and 2527 m water depth, respectively, indicate that during the time period from 160,000 to 10,000 years BP, ice rafting events in the Labrador Sea were accompanied by rapid variations in deep and surface water circulation. Twelve ice-rafting events occurred, each coinciding with high concentrations of detrital carbonate and oxygen isotopic depletion of both surface and bottom waters. Eleven of these can be correlated with the North Atlantic Heinrich events H1–H11. The remaining very conspicuous ice-rafting event took place early in MIS substage 5e, at a time when the planktic faunal assemblage suggests marked warming of the sea surface. In the shallower core, benthic d13C values rise from a minimum during the deglaciation to peak substage 5e values following the last ice-rafting event, indicating that the ventilation of intermediate depths was renewed after the deglaciation was complete and continued throughout substage 5e. The benthic foraminifera suggest that this well-ventilated water mass was comparable to the modern Labrador Sea Water (LSW). The benthic faunas suggest that a relatively warm intermediate water mass entered the SE Labrador Sea during Heinrich events. Generally low benthic d13C values indicate that this water mass was poorly ventilated and rich in inorganic nutrients. Isotope data and benthic faunal distributions indicate that North Atlantic Deep Water (NADW) formed in the Norwegian-Greenland Sea reached the SE Labrador Sea between the Heinrich events. |
format |
Dataset |
author |
Rasmussen, Tine Lander Oppo, Delia W Thomsen, Erik Lehman, Scott J |
author_facet |
Rasmussen, Tine Lander Oppo, Delia W Thomsen, Erik Lehman, Scott J |
author_sort |
Rasmussen, Tine Lander |
title |
(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
title_short |
(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
title_full |
(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
title_fullStr |
(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
title_full_unstemmed |
(Table 1) Age determination of sediment cores EW9302-JPC1 and EW9302-JPC2 |
title_sort |
(table 1) age determination of sediment cores ew9302-jpc1 and ew9302-jpc2 |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.842156 https://doi.org/10.1594/PANGAEA.842156 |
op_coverage |
MEDIAN LATITUDE: 49.019150 * MEDIAN LONGITUDE: -45.089500 * SOUTH-BOUND LATITUDE: 48.800000 * WEST-BOUND LONGITUDE: -45.090000 * NORTH-BOUND LATITUDE: 49.238300 * EAST-BOUND LONGITUDE: -45.089000 * MINIMUM DEPTH, sediment/rock: 0.16 m * MAXIMUM DEPTH, sediment/rock: 4.80 m |
long_lat |
ENVELOPE(-45.090000,-45.089000,49.238300,48.800000) |
geographic |
Greenland Newfoundland |
geographic_facet |
Greenland Newfoundland |
genre |
Greenland Greenland Sea Labrador Sea NADW Newfoundland North Atlantic Deep Water North Atlantic |
genre_facet |
Greenland Greenland Sea Labrador Sea NADW Newfoundland North Atlantic Deep Water North Atlantic |
op_source |
Supplement to: Rasmussen, Tine Lander; Oppo, Delia W; Thomsen, Erik; Lehman, Scott J (2003): Deep sea records from the southeast Labrador Sea: ocean circulation changes and ice-rafting events during the last 160,000 years. Paleoceanography, 18(1), 1018, https://doi.org/10.1029/2001PA000736 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.842156 https://doi.org/10.1594/PANGAEA.842156 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.842156 https://doi.org/10.1029/2001PA000736 |
_version_ |
1766020097348993024 |