Fe grain geochemical provenance data for Denmark Strait
The dynamics of the Greenland Ice Sheet and drift of sea ice from the Arctic Ocean reaching Denmark Strait are poorly constrained. We present data on the provenance of Fe oxide detrital grains from two cores in the Denmark Strait area and compare the Fe grain source data with other environmental pro...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.876209 2023-05-15T14:14:41+02:00 Fe grain geochemical provenance data for Denmark Strait Darby, Dennis A MEDIAN LATITUDE: 66.907832 * MEDIAN LONGITUDE: -27.512495 * SOUTH-BOUND LATITUDE: 66.679333 * WEST-BOUND LONGITUDE: -30.827830 * NORTH-BOUND LATITUDE: 67.136330 * EAST-BOUND LONGITUDE: -24.197160 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 2017-06-13 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.876209 https://doi.org/10.1594/PANGAEA.876209 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.876209 https://doi.org/10.1594/PANGAEA.876209 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Darby, Dennis A; Andrews, John T; Belt, Simon T; Jennings, Anne E; Cabedo-Sanz, Patricia (2017): Holocene cyclic records of ice-rafted debris and sea ice variations on the East Greenland and Northwest Iceland margins. Arctic, Antarctic, and Alpine Research, 49(4), 649-672, https://doi.org/10.1657/AAAR0017-008 Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.876209 https://doi.org/10.1657/AAAR0017-008 2023-01-20T07:33:57Z The dynamics of the Greenland Ice Sheet and drift of sea ice from the Arctic Ocean reaching Denmark Strait are poorly constrained. We present data on the provenance of Fe oxide detrital grains from two cores in the Denmark Strait area and compare the Fe grain source data with other environmental proxies. Based on their Fe grain geochemistry the sediments can be traced to regional East Greenland sources and to sites around the Arctic Basin. On both the 2 and 11 cal ka BP time-scales in the two cores, the environmental proxies revealed coherent relationships with new IP25 data and quartz weight percent being positively associated with T°C and inversely associated with biogenic carbonate wt.%. Trends in the data were obtained from Singular Spectrum Analysis (SSA) and residuals were tested for cyclicity. Trends on the environmental proxies explained between 15 and 90% of the variance. At both sites the primary Fe grain sources were from Greenland, but significant contributions were also noted from Banks Island and Svalbard. There is a prominent cyclicity of 800 yrs as well as other less prominent cycles for both Greenland and Arctic sources. Dataset Antarctic and Alpine Research Arctic Arctic Basin Arctic Arctic Ocean Banks Island Denmark Strait East Greenland Greenland Ice Sheet Sea ice Svalbard PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Svalbard Greenland ENVELOPE(-30.827830,-24.197160,67.136330,66.679333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
The dynamics of the Greenland Ice Sheet and drift of sea ice from the Arctic Ocean reaching Denmark Strait are poorly constrained. We present data on the provenance of Fe oxide detrital grains from two cores in the Denmark Strait area and compare the Fe grain source data with other environmental proxies. Based on their Fe grain geochemistry the sediments can be traced to regional East Greenland sources and to sites around the Arctic Basin. On both the 2 and 11 cal ka BP time-scales in the two cores, the environmental proxies revealed coherent relationships with new IP25 data and quartz weight percent being positively associated with T°C and inversely associated with biogenic carbonate wt.%. Trends in the data were obtained from Singular Spectrum Analysis (SSA) and residuals were tested for cyclicity. Trends on the environmental proxies explained between 15 and 90% of the variance. At both sites the primary Fe grain sources were from Greenland, but significant contributions were also noted from Banks Island and Svalbard. There is a prominent cyclicity of 800 yrs as well as other less prominent cycles for both Greenland and Arctic sources. |
format |
Dataset |
author |
Darby, Dennis A |
spellingShingle |
Darby, Dennis A Fe grain geochemical provenance data for Denmark Strait |
author_facet |
Darby, Dennis A |
author_sort |
Darby, Dennis A |
title |
Fe grain geochemical provenance data for Denmark Strait |
title_short |
Fe grain geochemical provenance data for Denmark Strait |
title_full |
Fe grain geochemical provenance data for Denmark Strait |
title_fullStr |
Fe grain geochemical provenance data for Denmark Strait |
title_full_unstemmed |
Fe grain geochemical provenance data for Denmark Strait |
title_sort |
fe grain geochemical provenance data for denmark strait |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.876209 https://doi.org/10.1594/PANGAEA.876209 |
op_coverage |
MEDIAN LATITUDE: 66.907832 * MEDIAN LONGITUDE: -27.512495 * SOUTH-BOUND LATITUDE: 66.679333 * WEST-BOUND LONGITUDE: -30.827830 * NORTH-BOUND LATITUDE: 67.136330 * EAST-BOUND LONGITUDE: -24.197160 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 |
long_lat |
ENVELOPE(-30.827830,-24.197160,67.136330,66.679333) |
geographic |
Arctic Arctic Ocean Svalbard Greenland |
geographic_facet |
Arctic Arctic Ocean Svalbard Greenland |
genre |
Antarctic and Alpine Research Arctic Arctic Basin Arctic Arctic Ocean Banks Island Denmark Strait East Greenland Greenland Ice Sheet Sea ice Svalbard |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Basin Arctic Arctic Ocean Banks Island Denmark Strait East Greenland Greenland Ice Sheet Sea ice Svalbard |
op_source |
Supplement to: Darby, Dennis A; Andrews, John T; Belt, Simon T; Jennings, Anne E; Cabedo-Sanz, Patricia (2017): Holocene cyclic records of ice-rafted debris and sea ice variations on the East Greenland and Northwest Iceland margins. Arctic, Antarctic, and Alpine Research, 49(4), 649-672, https://doi.org/10.1657/AAAR0017-008 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.876209 https://doi.org/10.1594/PANGAEA.876209 |
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.876209 https://doi.org/10.1657/AAAR0017-008 |
_version_ |
1766287010316681216 |