Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait
Based on quantitative X-ray diffraction mineralogical analysis of cores HU2008029-0006/0008 (857-m water depth) located south of the Davis Strait sill, we seek answers to two questions: (i) the temporal correlation of NW Labrador Shelf Sea Heinrich (H-) and Baffin Bay detrital carbonate (BBDC) event...
Published in: | Journal of Quaternary Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2013
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/36784/ https://oceanrep.geomar.de/id/eprint/36784/1/Andrews.pdf https://doi.org/10.1002/jqs.2643 |
id |
ftoceanrep:oai:oceanrep.geomar.de:36784 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:36784 2023-05-15T15:34:59+02:00 Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait Andrews, John T. Gibb, Olivia T. Jennings, Anne E. Simon, Quentin 2013 text https://oceanrep.geomar.de/id/eprint/36784/ https://oceanrep.geomar.de/id/eprint/36784/1/Andrews.pdf https://doi.org/10.1002/jqs.2643 en eng Wiley https://oceanrep.geomar.de/id/eprint/36784/1/Andrews.pdf Andrews, J. T., Gibb, O. T., Jennings, A. E. and Simon, Q. (2013) Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait. Journal of Quaternary Science, 29 (1). pp. 3-13. DOI 10.1002/jqs.2643 <https://doi.org/10.1002/jqs.2643>. doi:10.1002/jqs.2643 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1002/jqs.2643 2023-04-07T15:31:27Z Based on quantitative X-ray diffraction mineralogical analysis of cores HU2008029-0006/0008 (857-m water depth) located south of the Davis Strait sill, we seek answers to two questions: (i) the temporal correlation of NW Labrador Shelf Sea Heinrich (H-) and Baffin Bay detrital carbonate (BBDC) events, and (ii) the provenance of the sediments? A sediment-unmixing model (SedUnMix) is used to determine provenance variations. Although 12 radiocarbon dates were obtained there were many age reversals and we favour a depth/age model for HU2008029-0008PC based on correlations to well-dated neighbouring cores north and south of Davis Strait. We find no correlation between H- and BBDC events except for H-0, which appears to be a broadly synchronous event along the NE Canadian margin and is correlative with an episode of major moraine building along this flank of the Laurentide Ice Sheet. Unmixing of the sediment composition based on six potential glacial source regions indicates that the bulk of the sediment in 0008PC is derived from glacial erosion of West Greenland, but is punctuated by intervals when dolomite-rich sediments, derived from outcrops north of Baffin Bay, dominate the composition. Estimated dates on these BBDC events are -13, 25 and 30–38 cal ka BP. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Baffin Bay Greenland Labrador Shelf ENVELOPE(-58.000,-58.000,56.000,56.000) Journal of Quaternary Science 29 1 3 13 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Based on quantitative X-ray diffraction mineralogical analysis of cores HU2008029-0006/0008 (857-m water depth) located south of the Davis Strait sill, we seek answers to two questions: (i) the temporal correlation of NW Labrador Shelf Sea Heinrich (H-) and Baffin Bay detrital carbonate (BBDC) events, and (ii) the provenance of the sediments? A sediment-unmixing model (SedUnMix) is used to determine provenance variations. Although 12 radiocarbon dates were obtained there were many age reversals and we favour a depth/age model for HU2008029-0008PC based on correlations to well-dated neighbouring cores north and south of Davis Strait. We find no correlation between H- and BBDC events except for H-0, which appears to be a broadly synchronous event along the NE Canadian margin and is correlative with an episode of major moraine building along this flank of the Laurentide Ice Sheet. Unmixing of the sediment composition based on six potential glacial source regions indicates that the bulk of the sediment in 0008PC is derived from glacial erosion of West Greenland, but is punctuated by intervals when dolomite-rich sediments, derived from outcrops north of Baffin Bay, dominate the composition. Estimated dates on these BBDC events are -13, 25 and 30–38 cal ka BP. |
format |
Article in Journal/Newspaper |
author |
Andrews, John T. Gibb, Olivia T. Jennings, Anne E. Simon, Quentin |
spellingShingle |
Andrews, John T. Gibb, Olivia T. Jennings, Anne E. Simon, Quentin Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
author_facet |
Andrews, John T. Gibb, Olivia T. Jennings, Anne E. Simon, Quentin |
author_sort |
Andrews, John T. |
title |
Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
title_short |
Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
title_full |
Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
title_fullStr |
Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
title_full_unstemmed |
Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait |
title_sort |
variations in the provenance of sediment from ice sheets surrounding baffin bay during mis 2 and 3 and export to the labrador shelf sea: site hu2008029-0008 davis strait |
publisher |
Wiley |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/36784/ https://oceanrep.geomar.de/id/eprint/36784/1/Andrews.pdf https://doi.org/10.1002/jqs.2643 |
long_lat |
ENVELOPE(-58.000,-58.000,56.000,56.000) |
geographic |
Baffin Bay Greenland Labrador Shelf |
geographic_facet |
Baffin Bay Greenland Labrador Shelf |
genre |
Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet |
genre_facet |
Baffin Bay Baffin Bay Baffin Davis Strait Greenland Ice Sheet |
op_relation |
https://oceanrep.geomar.de/id/eprint/36784/1/Andrews.pdf Andrews, J. T., Gibb, O. T., Jennings, A. E. and Simon, Q. (2013) Variations in the provenance of sediment from ice sheets surrounding Baffin Bay during MIS 2 and 3 and export to the Labrador Shelf Sea: site HU2008029-0008 Davis Strait. Journal of Quaternary Science, 29 (1). pp. 3-13. DOI 10.1002/jqs.2643 <https://doi.org/10.1002/jqs.2643>. doi:10.1002/jqs.2643 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/jqs.2643 |
container_title |
Journal of Quaternary Science |
container_volume |
29 |
container_issue |
1 |
container_start_page |
3 |
op_container_end_page |
13 |
_version_ |
1766365240908316672 |