Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198
The sediment records from north and south of Denmark Strait (cores PS2644 and MD99-2323) and on the Kangerlussuaq Trough Mouth Fan (KTMF) (MD99-2260) are evaluated for the period 12 to 60 cal ka BP with the goal of evaluating: 1) the relative roles of the Greenland and Iceland Ice Sheets in sediment...
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ftdatacite:10.1594/pangaea.876078 2023-05-15T16:00:37+02:00 Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 Andrews, John T Dunhill, Gita Vogt, Christoph Voelker, Antje H L 2017 application/zip https://dx.doi.org/10.1594/pangaea.876078 https://doi.pangaea.de/10.1594/PANGAEA.876078 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.margeo.2017.07.003 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY article Supplementary Collection of Datasets Collection 2017 ftdatacite https://doi.org/10.1594/pangaea.876078 https://doi.org/10.1016/j.margeo.2017.07.003 2022-02-09T13:17:41Z The sediment records from north and south of Denmark Strait (cores PS2644 and MD99-2323) and on the Kangerlussuaq Trough Mouth Fan (KTMF) (MD99-2260) are evaluated for the period 12 to 60 cal ka BP with the goal of evaluating: 1) the relative roles of the Greenland and Iceland Ice Sheets in sediment composition, 2) the processes of sediment supply, and 3) the relationship, if any, between the atmospheric derived ice core records and glacial marine sediment history. These questions were addressed using counts of coarse (> 2 mm) ice rafted debris (IRD), magnetic susceptibility, grain-size spectra, and sediment mineral composition. A significant difference in these variables occurred between MS3 and MIS2, with the latter showing small to modest abrupt changes in felsic and mafic minerals and in IRD, compared to larger and less variable changes during MIS2. The dominant bedrock source archived in the cores is the Cenozoic basaltic outcrops from East Greenland and Iceland (~60%) but there are frequent pulses of felsic-rich sediments (~17-36%), which coincided with Greenland stadials. There is also a persistent detrital carbonate input. The largest shift in most sediment proxies occurred ~28-30 cal ka BP reflecting the sustained expansion of the ice sheets. The grain-size spectra on the Snorri Drift (MD99-2323) reflected complex depositional histories involving the supply of poorly sorted glacially derived sediment (sand, silt, and clay) and reworking by bottom currents. Article in Journal/Newspaper Denmark Strait East Greenland Greenland ice core Iceland Kangerlussuaq DataCite Metadata Store (German National Library of Science and Technology) Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The sediment records from north and south of Denmark Strait (cores PS2644 and MD99-2323) and on the Kangerlussuaq Trough Mouth Fan (KTMF) (MD99-2260) are evaluated for the period 12 to 60 cal ka BP with the goal of evaluating: 1) the relative roles of the Greenland and Iceland Ice Sheets in sediment composition, 2) the processes of sediment supply, and 3) the relationship, if any, between the atmospheric derived ice core records and glacial marine sediment history. These questions were addressed using counts of coarse (> 2 mm) ice rafted debris (IRD), magnetic susceptibility, grain-size spectra, and sediment mineral composition. A significant difference in these variables occurred between MS3 and MIS2, with the latter showing small to modest abrupt changes in felsic and mafic minerals and in IRD, compared to larger and less variable changes during MIS2. The dominant bedrock source archived in the cores is the Cenozoic basaltic outcrops from East Greenland and Iceland (~60%) but there are frequent pulses of felsic-rich sediments (~17-36%), which coincided with Greenland stadials. There is also a persistent detrital carbonate input. The largest shift in most sediment proxies occurred ~28-30 cal ka BP reflecting the sustained expansion of the ice sheets. The grain-size spectra on the Snorri Drift (MD99-2323) reflected complex depositional histories involving the supply of poorly sorted glacially derived sediment (sand, silt, and clay) and reworking by bottom currents. |
format |
Article in Journal/Newspaper |
author |
Andrews, John T Dunhill, Gita Vogt, Christoph Voelker, Antje H L |
spellingShingle |
Andrews, John T Dunhill, Gita Vogt, Christoph Voelker, Antje H L Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
author_facet |
Andrews, John T Dunhill, Gita Vogt, Christoph Voelker, Antje H L |
author_sort |
Andrews, John T |
title |
Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
title_short |
Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
title_full |
Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
title_fullStr |
Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
title_full_unstemmed |
Age determination, bulk mineral assemblage and sedimentology of sediment cores North and South of the Denmark Strait, supplement to: Andrews, John T; Dunhill, Gita; Vogt, Christoph; Voelker, Antje H L (2017): Denmark Strait during the Late Glacial Maximum and Marine Isotope Stage 3: Sediment sources and transport processes. Marine Geology, 390, 181-198 |
title_sort |
age determination, bulk mineral assemblage and sedimentology of sediment cores north and south of the denmark strait, supplement to: andrews, john t; dunhill, gita; vogt, christoph; voelker, antje h l (2017): denmark strait during the late glacial maximum and marine isotope stage 3: sediment sources and transport processes. marine geology, 390, 181-198 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2017 |
url |
https://dx.doi.org/10.1594/pangaea.876078 https://doi.pangaea.de/10.1594/PANGAEA.876078 |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Greenland Kangerlussuaq |
geographic_facet |
Greenland Kangerlussuaq |
genre |
Denmark Strait East Greenland Greenland ice core Iceland Kangerlussuaq |
genre_facet |
Denmark Strait East Greenland Greenland ice core Iceland Kangerlussuaq |
op_relation |
https://dx.doi.org/10.1016/j.margeo.2017.07.003 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.876078 https://doi.org/10.1016/j.margeo.2017.07.003 |
_version_ |
1766396610445574144 |