Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX)
Knowledge of the long-term history of the perennial ice is an important issue that has eluded study because the Cenozoic core material needed has been unavailable until the recent Arctic Coring Expedition (ACEX). Detrital Fe oxide mineral grains analyzed by microprobe from the last 14 Ma (164 m) of...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.711530 2023-05-15T14:23:48+02:00 Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) Darby, Dennis A MEDIAN LATITUDE: 83.763739 * MEDIAN LONGITUDE: 84.810652 * SOUTH-BOUND LATITUDE: 70.000000 * WEST-BOUND LONGITUDE: -138.300000 * NORTH-BOUND LATITUDE: 87.890000 * EAST-BOUND LONGITUDE: 176.156522 2009-01-20 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.711530 https://doi.org/10.1594/PANGAEA.711530 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.711530 https://doi.org/10.1594/PANGAEA.711530 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 (2008): Arctic perennial ice cover over the last 14 million years. Paleoceanography, 23, PA1S07, https://doi.org/10.1029/2007PA001479 302-CompSite Arctic Coring Expedition ACEX COMPCORE Composite Core Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.711530 https://doi.org/10.1029/2007PA001479 2023-01-20T07:31:20Z Knowledge of the long-term history of the perennial ice is an important issue that has eluded study because the Cenozoic core material needed has been unavailable until the recent Arctic Coring Expedition (ACEX). Detrital Fe oxide mineral grains analyzed by microprobe from the last 14 Ma (164 m) of the ACEX composite core on the Lomonosov Ridge were matched to circum-Arctic sources with the same mineral and 12-element composition. These precise source determinations and estimates of drift rates were used to determine that these sand grains could not be rafted to the ACEX core site in less than a year. Thus the perennial ice cover has existed since 14 Ma except for the unlikely rapid return to seasonal ice between the average sampling interval of about 0.17 Ma. Both North America and Russia contributed significant Fe grains to the ACEX core during the last 14 Ma. Dataset Arctic Arctic Arctic Ocean Lomonosov Ridge PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean ENVELOPE(-138.300000,176.156522,87.890000,70.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-CompSite Arctic Coring Expedition ACEX COMPCORE Composite Core Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking |
spellingShingle |
302-CompSite Arctic Coring Expedition ACEX COMPCORE Composite Core Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking Darby, Dennis A Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
topic_facet |
302-CompSite Arctic Coring Expedition ACEX COMPCORE Composite Core Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking |
description |
Knowledge of the long-term history of the perennial ice is an important issue that has eluded study because the Cenozoic core material needed has been unavailable until the recent Arctic Coring Expedition (ACEX). Detrital Fe oxide mineral grains analyzed by microprobe from the last 14 Ma (164 m) of the ACEX composite core on the Lomonosov Ridge were matched to circum-Arctic sources with the same mineral and 12-element composition. These precise source determinations and estimates of drift rates were used to determine that these sand grains could not be rafted to the ACEX core site in less than a year. Thus the perennial ice cover has existed since 14 Ma except for the unlikely rapid return to seasonal ice between the average sampling interval of about 0.17 Ma. Both North America and Russia contributed significant Fe grains to the ACEX core during the last 14 Ma. |
format |
Dataset |
author |
Darby, Dennis A |
author_facet |
Darby, Dennis A |
author_sort |
Darby, Dennis A |
title |
Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
title_short |
Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
title_full |
Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
title_fullStr |
Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
title_full_unstemmed |
Drift distances, times and primary grain sources of the Arctic Ocean, Exp302 (ACEX) |
title_sort |
drift distances, times and primary grain sources of the arctic ocean, exp302 (acex) |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.711530 https://doi.org/10.1594/PANGAEA.711530 |
op_coverage |
MEDIAN LATITUDE: 83.763739 * MEDIAN LONGITUDE: 84.810652 * SOUTH-BOUND LATITUDE: 70.000000 * WEST-BOUND LONGITUDE: -138.300000 * NORTH-BOUND LATITUDE: 87.890000 * EAST-BOUND LONGITUDE: 176.156522 |
long_lat |
ENVELOPE(-138.300000,176.156522,87.890000,70.000000) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Lomonosov Ridge |
genre_facet |
Arctic Arctic Arctic Ocean Lomonosov Ridge |
op_source |
Supplement to: Darby, Dennis A (2008): Arctic perennial ice cover over the last 14 million years. Paleoceanography, 23, PA1S07, https://doi.org/10.1029/2007PA001479 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.711530 https://doi.org/10.1594/PANGAEA.711530 |
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.711530 https://doi.org/10.1029/2007PA001479 |
_version_ |
1766296289856716800 |