Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4
Abstract Core HU97048‐007PC was recovered from the continental Labrador Sea slope at a water depth of 945 m, 250 km seaward from the mouth of Cumberland Sound, and 400 km north of Hudson Strait. Cumberland Sound is a structural trough partly floored by Cretaceous mudstones and Paleozoic carbonates....
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crwiley:10.1002/jqs.2535 2024-06-23T07:51:28+00:00 Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 Andrews, J. T. Barber, D. C. Jennings, A. E. Eberl, D. D. Maclean, B. Kirby, M. E. Stoner, J. S. 2012 http://dx.doi.org/10.1002/jqs.2535 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2535 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2535 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 27, issue 5, page 475-484 ISSN 0267-8179 1099-1417 journal-article 2012 crwiley https://doi.org/10.1002/jqs.2535 2024-06-04T06:46:44Z Abstract Core HU97048‐007PC was recovered from the continental Labrador Sea slope at a water depth of 945 m, 250 km seaward from the mouth of Cumberland Sound, and 400 km north of Hudson Strait. Cumberland Sound is a structural trough partly floored by Cretaceous mudstones and Paleozoic carbonates. The record extends from ∼10 to 58 ka. On‐board logging revealed a complex series of lithofacies, including buff‐colored detrital carbonate‐rich sediments [Heinrich (H)‐events] frequently bracketed by black facies. We investigate the provenance of these facies using quantitative X‐ray diffraction on drill‐core samples from Paleozoic and Cretaceous bedrock from the SE Baffin Island Shelf, and on the < 2‐mm sediment fraction in a transect of five cores from Cumberland Sound to the NW Labrador Sea. A sediment unmixing program was used to discriminate between sediment sources, which included dolomite‐rich sediments from Baffin Bay, calcite‐rich sediments from Hudson Strait and discrete sources from Cumberland Sound. Results indicated that the bulk of the sediment was derived from Cumberland Sound, but Baffin Bay contributed to sediments coeval with H‐0 (Younger Dryas), whereas Hudson Strait was the source during H‐events 1–4. Contributions from the Cretaceous outcrops within Cumberland Sound bracket H‐events, thus both leading and lagging Hudson Strait‐sourced H‐events. Copyright © 2012 John Wiley & Sons, Ltd. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Island Baffin Cumberland Sound Hudson Strait Labrador Sea Wiley Online Library Baffin Bay Baffin Island Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Buff ENVELOPE(-64.567,-64.567,-64.833,-64.833) Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Journal of Quaternary Science 27 5 475 484 |
institution |
Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Core HU97048‐007PC was recovered from the continental Labrador Sea slope at a water depth of 945 m, 250 km seaward from the mouth of Cumberland Sound, and 400 km north of Hudson Strait. Cumberland Sound is a structural trough partly floored by Cretaceous mudstones and Paleozoic carbonates. The record extends from ∼10 to 58 ka. On‐board logging revealed a complex series of lithofacies, including buff‐colored detrital carbonate‐rich sediments [Heinrich (H)‐events] frequently bracketed by black facies. We investigate the provenance of these facies using quantitative X‐ray diffraction on drill‐core samples from Paleozoic and Cretaceous bedrock from the SE Baffin Island Shelf, and on the < 2‐mm sediment fraction in a transect of five cores from Cumberland Sound to the NW Labrador Sea. A sediment unmixing program was used to discriminate between sediment sources, which included dolomite‐rich sediments from Baffin Bay, calcite‐rich sediments from Hudson Strait and discrete sources from Cumberland Sound. Results indicated that the bulk of the sediment was derived from Cumberland Sound, but Baffin Bay contributed to sediments coeval with H‐0 (Younger Dryas), whereas Hudson Strait was the source during H‐events 1–4. Contributions from the Cretaceous outcrops within Cumberland Sound bracket H‐events, thus both leading and lagging Hudson Strait‐sourced H‐events. Copyright © 2012 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Andrews, J. T. Barber, D. C. Jennings, A. E. Eberl, D. D. Maclean, B. Kirby, M. E. Stoner, J. S. |
spellingShingle |
Andrews, J. T. Barber, D. C. Jennings, A. E. Eberl, D. D. Maclean, B. Kirby, M. E. Stoner, J. S. Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
author_facet |
Andrews, J. T. Barber, D. C. Jennings, A. E. Eberl, D. D. Maclean, B. Kirby, M. E. Stoner, J. S. |
author_sort |
Andrews, J. T. |
title |
Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
title_short |
Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
title_full |
Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
title_fullStr |
Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
title_full_unstemmed |
Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4 |
title_sort |
varying sediment sources (hudson strait, cumberland sound, baffin bay) to the nw labrador sea slope between and during heinrich events 0 to 4 |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/jqs.2535 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2535 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2535 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-64.567,-64.567,-64.833,-64.833) ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Baffin Bay Baffin Island Hudson Hudson Strait Buff Cumberland Sound |
geographic_facet |
Baffin Bay Baffin Island Hudson Hudson Strait Buff Cumberland Sound |
genre |
Baffin Bay Baffin Bay Baffin Island Baffin Cumberland Sound Hudson Strait Labrador Sea |
genre_facet |
Baffin Bay Baffin Bay Baffin Island Baffin Cumberland Sound Hudson Strait Labrador Sea |
op_source |
Journal of Quaternary Science volume 27, issue 5, page 475-484 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2535 |
container_title |
Journal of Quaternary Science |
container_volume |
27 |
container_issue |
5 |
container_start_page |
475 |
op_container_end_page |
484 |
_version_ |
1802642584721424384 |