Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years
Lead (Pb), neodymium (Nd), and strontium (Sr) isotopic analyses were carried out on sediment leachates (reflecting the isotope composition of past seawater) and digests of the bulk residues (reflecting detrital continental inputs) of Integrated Ocean Drilling Program (IODP) Leg 302 and core PS2185 f...
Published in: | Paleoceanography |
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Language: | English |
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AGU (American Geophysical Union)
2008
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Online Access: | https://oceanrep.geomar.de/id/eprint/4501/ https://oceanrep.geomar.de/id/eprint/4501/1/75_Haley_2008_RadiogenicIsotopeRecordOfArctic_Artzeit_pubid9081.pdf https://doi.org/10.1029/2007PA001486 |
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ftoceanrep:oai:oceanrep.geomar.de:4501 2024-09-30T14:27:56+00:00 Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years Haley, Brian Frank, Martin Spielhagen, Robert Fietzke, Jan 2008 text https://oceanrep.geomar.de/id/eprint/4501/ https://oceanrep.geomar.de/id/eprint/4501/1/75_Haley_2008_RadiogenicIsotopeRecordOfArctic_Artzeit_pubid9081.pdf https://doi.org/10.1029/2007PA001486 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/4501/1/75_Haley_2008_RadiogenicIsotopeRecordOfArctic_Artzeit_pubid9081.pdf Haley, B., Frank, M. , Spielhagen, R. and Fietzke, J. (2008) Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years. Open Access Paleoceanography, 23 (A001486). DOI 10.1029/2007PA001486 <https://doi.org/10.1029/2007PA001486>. doi:10.1029/2007PA001486 info:eu-repo/semantics/openAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1029/2007PA001486 2024-09-04T05:04:40Z Lead (Pb), neodymium (Nd), and strontium (Sr) isotopic analyses were carried out on sediment leachates (reflecting the isotope composition of past seawater) and digests of the bulk residues (reflecting detrital continental inputs) of Integrated Ocean Drilling Program (IODP) Leg 302 and core PS2185 from the Lomonosov Ridge (Arctic Ocean). Our records are interpreted to reflect changes in continental erosion and oceanic circulation, driven predominantly by tectonic forcing on million-year timescales in the older (pre-2 Ma) part of the record and by climatic forcing of weathering and erosion of the Eurasian continental margin on thousand-year timescales in the younger (post-2 Ma) part. These data, covering the past ∼15 Ma, show that continental inputs to the central Arctic Ocean have been more closely linked to glacial and hydrological processes occurring on the Eurasian margin than on continental North America and Greenland. The constancy of the detrital input signatures supports the early existence of an Arctic sea ice cover, whereas the major initiation of Northern Hemisphere glaciation at 2.7 Ma appears to have had little impact on the weathering regime of the Eurasian continental margin. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Greenland Paleoceanography 23 1 n/a n/a |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Lead (Pb), neodymium (Nd), and strontium (Sr) isotopic analyses were carried out on sediment leachates (reflecting the isotope composition of past seawater) and digests of the bulk residues (reflecting detrital continental inputs) of Integrated Ocean Drilling Program (IODP) Leg 302 and core PS2185 from the Lomonosov Ridge (Arctic Ocean). Our records are interpreted to reflect changes in continental erosion and oceanic circulation, driven predominantly by tectonic forcing on million-year timescales in the older (pre-2 Ma) part of the record and by climatic forcing of weathering and erosion of the Eurasian continental margin on thousand-year timescales in the younger (post-2 Ma) part. These data, covering the past ∼15 Ma, show that continental inputs to the central Arctic Ocean have been more closely linked to glacial and hydrological processes occurring on the Eurasian margin than on continental North America and Greenland. The constancy of the detrital input signatures supports the early existence of an Arctic sea ice cover, whereas the major initiation of Northern Hemisphere glaciation at 2.7 Ma appears to have had little impact on the weathering regime of the Eurasian continental margin. |
format |
Article in Journal/Newspaper |
author |
Haley, Brian Frank, Martin Spielhagen, Robert Fietzke, Jan |
spellingShingle |
Haley, Brian Frank, Martin Spielhagen, Robert Fietzke, Jan Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
author_facet |
Haley, Brian Frank, Martin Spielhagen, Robert Fietzke, Jan |
author_sort |
Haley, Brian |
title |
Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
title_short |
Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
title_full |
Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
title_fullStr |
Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
title_full_unstemmed |
Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
title_sort |
radiogenic isotope record of arctic ocean circulation and weathering inputs of the past 15 million years |
publisher |
AGU (American Geophysical Union) |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/4501/ https://oceanrep.geomar.de/id/eprint/4501/1/75_Haley_2008_RadiogenicIsotopeRecordOfArctic_Artzeit_pubid9081.pdf https://doi.org/10.1029/2007PA001486 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/4501/1/75_Haley_2008_RadiogenicIsotopeRecordOfArctic_Artzeit_pubid9081.pdf Haley, B., Frank, M. , Spielhagen, R. and Fietzke, J. (2008) Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years. Open Access Paleoceanography, 23 (A001486). DOI 10.1029/2007PA001486 <https://doi.org/10.1029/2007PA001486>. doi:10.1029/2007PA001486 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2007PA001486 |
container_title |
Paleoceanography |
container_volume |
23 |
container_issue |
1 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1811633869834682368 |