Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin
The Nd and Sr isotopic compositions of Quaternary glacial and glacimarine siliciclastic sediments deposited along the margin of southeast Greenland were determined to assess the roles of the Greenland, Iceland, and more distal ice sheets in delivering detritus to this portion of the northern North A...
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Language: | English |
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PANGAEA
2009
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.730185 https://doi.org/10.1594/PANGAEA.730185 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.730185 |
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openpolar |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-XVIII/1 Bjarni Saemundsson BS11/91 BS1191-K6A GC Gravity corer Greenland Sea HU91-045-052 HUD91/45 Hudson Iceland Sea James Clark Ross Jan Mayen JM96 JM96-1213/1-GC JM96-1216/1-GC JR20000727 JR51 JR51GC-31 JR51GC-32 North Atlantic Ocean PC Piston corer Polarstern PS62 PS62/017-4 |
spellingShingle |
ARK-XVIII/1 Bjarni Saemundsson BS11/91 BS1191-K6A GC Gravity corer Greenland Sea HU91-045-052 HUD91/45 Hudson Iceland Sea James Clark Ross Jan Mayen JM96 JM96-1213/1-GC JM96-1216/1-GC JR20000727 JR51 JR51GC-31 JR51GC-32 North Atlantic Ocean PC Piston corer Polarstern PS62 PS62/017-4 Verplanck, Emily P Farmer, G Lang Andrews, John T Dunhill, Gita Millo, Christian Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
topic_facet |
ARK-XVIII/1 Bjarni Saemundsson BS11/91 BS1191-K6A GC Gravity corer Greenland Sea HU91-045-052 HUD91/45 Hudson Iceland Sea James Clark Ross Jan Mayen JM96 JM96-1213/1-GC JM96-1216/1-GC JR20000727 JR51 JR51GC-31 JR51GC-32 North Atlantic Ocean PC Piston corer Polarstern PS62 PS62/017-4 |
description |
The Nd and Sr isotopic compositions of Quaternary glacial and glacimarine siliciclastic sediments deposited along the margin of southeast Greenland were determined to assess the roles of the Greenland, Iceland, and more distal ice sheets in delivering detritus to this portion of the northern North Atlantic. The isotopic compositions of detritus generated by portions of the southern Greenland Ice Sheet were defined through measurements of till and trough mouth fan sediments. Massive diamicts from the Scoresby Sund trough mouth fan show a restricted range of e-Nd (-11.8 to -16.6) and 87Sr/86Sr (0.7192-0.7246) consistent with their derivation from mixtures of sediments derived from Paleoproterozoic and/or Caledonian basement and Tertiary Greenland basalts. Further south at Kangerlussuaq, till isotopic compositions covary with the underlying basement type, with low e-Nd values in the inner fiord (-18.1) reflecting the erosion of the local Precambrian gneisses, but with higher e-Nd values (-2.3 to 2.5) found where the trough crosses East Greenland Tertiary basalts. Fine-grained (< 63 µm) sediments deposited along the southeast Greenland margin also show regular spatial isotopic variations. Ambient sediments and ice-rafted detritus in the southern Irminger Basin trend towards low e-Nd values (to ~ -28) and 87Sr/86Sr ratios (~ 0.711 to ~ 0.715) and are likely derived from proximal Archean gneisses of SE Greenland. Further north in the northern Irminger and Blosseville Basins, sediments trend toward much higher e-Nd (> -4) and low 87Sr/86Sr (< 0.709) reflecting a component derived from the local Iceland volcanic rocks and/or the East Greenland Tertiary basalts. In all three regions, the locally-derived detritus is intermixed with sediment with an intermediate e-Nd value (~ -10) and 87Sr/86Sr (~ 0.718) that was likely delivered by icebergs emanating from the Eurasian Ice Sheets and not from eastern Greenland. Deposition of glacial sediments from both proximal and distal (Eurasian) sources occurred adjacent to SE ... |
format |
Dataset |
author |
Verplanck, Emily P Farmer, G Lang Andrews, John T Dunhill, Gita Millo, Christian |
author_facet |
Verplanck, Emily P Farmer, G Lang Andrews, John T Dunhill, Gita Millo, Christian |
author_sort |
Verplanck, Emily P |
title |
Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
title_short |
Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
title_full |
Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
title_fullStr |
Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
title_full_unstemmed |
Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin |
title_sort |
nd and sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast greenland margin |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.730185 https://doi.org/10.1594/PANGAEA.730185 |
op_coverage |
MEDIAN LATITUDE: 66.798371 * MEDIAN LONGITUDE: -28.187857 * SOUTH-BOUND LATITUDE: 59.490000 * WEST-BOUND LONGITUDE: -39.310000 * NORTH-BOUND LATITUDE: 69.370000 * EAST-BOUND LONGITUDE: -19.620000 * DATE/TIME START: 1996-09-26T00:00:00 * DATE/TIME END: 2002-07-06T10:32:00 |
long_lat |
ENVELOPE(-36.000,-36.000,61.000,61.000) ENVELOPE(-55.633,-55.633,72.633,72.633) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(-39.310000,-19.620000,69.370000,59.490000) |
geographic |
Greenland Hudson Irminger Basin Jan Mayen Kangerlussuaq Scoresby Scoresby Sund Sund |
geographic_facet |
Greenland Hudson Irminger Basin Jan Mayen Kangerlussuaq Scoresby Scoresby Sund Sund |
genre |
East Greenland Greenland Greenland Sea Ice Sheet Iceland Jan Mayen Kangerlussuaq North Atlantic Scoresby Sund |
genre_facet |
East Greenland Greenland Greenland Sea Ice Sheet Iceland Jan Mayen Kangerlussuaq North Atlantic Scoresby Sund |
op_source |
Supplement to: Verplanck, Emily P; Farmer, G Lang; Andrews, John T; Dunhill, Gita; Millo, Christian (2009): Provenance of Quaternary glacial and glacimarine sediments along the southeast Greenland margin. Earth and Planetary Science Letters, 286(1-2), 52-62, https://doi.org/10.1016/j.epsl.2009.06.012 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.730185 https://doi.org/10.1594/PANGAEA.730185 |
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.730185 https://doi.org/10.1016/j.epsl.2009.06.012 |
_version_ |
1766399472687906816 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.730185 2023-05-15T16:03:47+02:00 Nd and Sr isotopic compositions and isotope dilution trace element concentrations from 7 sediment cores along the southeast Greenland margin Verplanck, Emily P Farmer, G Lang Andrews, John T Dunhill, Gita Millo, Christian MEDIAN LATITUDE: 66.798371 * MEDIAN LONGITUDE: -28.187857 * SOUTH-BOUND LATITUDE: 59.490000 * WEST-BOUND LONGITUDE: -39.310000 * NORTH-BOUND LATITUDE: 69.370000 * EAST-BOUND LONGITUDE: -19.620000 * DATE/TIME START: 1996-09-26T00:00:00 * DATE/TIME END: 2002-07-06T10:32:00 2009-01-04 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.730185 https://doi.org/10.1594/PANGAEA.730185 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.730185 https://doi.org/10.1594/PANGAEA.730185 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Verplanck, Emily P; Farmer, G Lang; Andrews, John T; Dunhill, Gita; Millo, Christian (2009): Provenance of Quaternary glacial and glacimarine sediments along the southeast Greenland margin. Earth and Planetary Science Letters, 286(1-2), 52-62, https://doi.org/10.1016/j.epsl.2009.06.012 ARK-XVIII/1 Bjarni Saemundsson BS11/91 BS1191-K6A GC Gravity corer Greenland Sea HU91-045-052 HUD91/45 Hudson Iceland Sea James Clark Ross Jan Mayen JM96 JM96-1213/1-GC JM96-1216/1-GC JR20000727 JR51 JR51GC-31 JR51GC-32 North Atlantic Ocean PC Piston corer Polarstern PS62 PS62/017-4 Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.730185 https://doi.org/10.1016/j.epsl.2009.06.012 2023-01-20T07:31:36Z The Nd and Sr isotopic compositions of Quaternary glacial and glacimarine siliciclastic sediments deposited along the margin of southeast Greenland were determined to assess the roles of the Greenland, Iceland, and more distal ice sheets in delivering detritus to this portion of the northern North Atlantic. The isotopic compositions of detritus generated by portions of the southern Greenland Ice Sheet were defined through measurements of till and trough mouth fan sediments. Massive diamicts from the Scoresby Sund trough mouth fan show a restricted range of e-Nd (-11.8 to -16.6) and 87Sr/86Sr (0.7192-0.7246) consistent with their derivation from mixtures of sediments derived from Paleoproterozoic and/or Caledonian basement and Tertiary Greenland basalts. Further south at Kangerlussuaq, till isotopic compositions covary with the underlying basement type, with low e-Nd values in the inner fiord (-18.1) reflecting the erosion of the local Precambrian gneisses, but with higher e-Nd values (-2.3 to 2.5) found where the trough crosses East Greenland Tertiary basalts. Fine-grained (< 63 µm) sediments deposited along the southeast Greenland margin also show regular spatial isotopic variations. Ambient sediments and ice-rafted detritus in the southern Irminger Basin trend towards low e-Nd values (to ~ -28) and 87Sr/86Sr ratios (~ 0.711 to ~ 0.715) and are likely derived from proximal Archean gneisses of SE Greenland. Further north in the northern Irminger and Blosseville Basins, sediments trend toward much higher e-Nd (> -4) and low 87Sr/86Sr (< 0.709) reflecting a component derived from the local Iceland volcanic rocks and/or the East Greenland Tertiary basalts. In all three regions, the locally-derived detritus is intermixed with sediment with an intermediate e-Nd value (~ -10) and 87Sr/86Sr (~ 0.718) that was likely delivered by icebergs emanating from the Eurasian Ice Sheets and not from eastern Greenland. Deposition of glacial sediments from both proximal and distal (Eurasian) sources occurred adjacent to SE ... Dataset East Greenland Greenland Greenland Sea Ice Sheet Iceland Jan Mayen Kangerlussuaq North Atlantic Scoresby Sund PANGAEA - Data Publisher for Earth & Environmental Science Greenland Hudson Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) Jan Mayen Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Sund ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(-39.310000,-19.620000,69.370000,59.490000) |