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...
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2008
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.734430 https://doi.org/10.1594/PANGAEA.734430 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734430 2023-05-15T13:22:45+02:00 Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years Haley, Brian A Frank, Martin Spielhagen, Robert F Fietzke, Jan MEDIAN LATITUDE: 86.820207 * MEDIAN LONGITUDE: 121.816594 * SOUTH-BOUND LATITUDE: 80.086700 * WEST-BOUND LONGITUDE: 30.230000 * NORTH-BOUND LATITUDE: 89.986667 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-05T00:00:00 * DATE/TIME END: 2001-09-06T19:52:00 2008-05-09 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.734430 https://doi.org/10.1594/PANGAEA.734430 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.734430 https://doi.org/10.1594/PANGAEA.734430 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Fietzke, Jan (2008): Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years. Paleoceanography, 23(1), PA1S13, https://doi.org/10.1029/2007PA001486 302-CompSite Amundsen Basin Arctic Coring Expedition ACEX ARK-VIII/3 ARK-XVII/2 COMPCORE Composite Core Exp302 Gakkel Ridge Arctic Ocean Giant box corer GKG Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kasten corer Lomonosov Ridge Polarstern PS19/148 PS19/157 PS19/166 PS19/178 PS19/186 PS19/189 PS19/194 PS19 ARCTIC91 PS2156-1 PS2163-2 PS2171-1 PS2179-1 PS2185-3 PS2185-6 PS2186-5 PS2190-3 PS59/280-1 PS59 AMORE Svalbard Vidar Viking Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.734430 https://doi.org/10.1029/2007PA001486 2023-01-20T07:31:41Z 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. Dataset amundsen basin Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice Svalbard PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Svalbard Greenland Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(30.230000,144.166200,89.986667,80.086700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-CompSite Amundsen Basin Arctic Coring Expedition ACEX ARK-VIII/3 ARK-XVII/2 COMPCORE Composite Core Exp302 Gakkel Ridge Arctic Ocean Giant box corer GKG Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kasten corer Lomonosov Ridge Polarstern PS19/148 PS19/157 PS19/166 PS19/178 PS19/186 PS19/189 PS19/194 PS19 ARCTIC91 PS2156-1 PS2163-2 PS2171-1 PS2179-1 PS2185-3 PS2185-6 PS2186-5 PS2190-3 PS59/280-1 PS59 AMORE Svalbard Vidar Viking |
spellingShingle |
302-CompSite Amundsen Basin Arctic Coring Expedition ACEX ARK-VIII/3 ARK-XVII/2 COMPCORE Composite Core Exp302 Gakkel Ridge Arctic Ocean Giant box corer GKG Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kasten corer Lomonosov Ridge Polarstern PS19/148 PS19/157 PS19/166 PS19/178 PS19/186 PS19/189 PS19/194 PS19 ARCTIC91 PS2156-1 PS2163-2 PS2171-1 PS2179-1 PS2185-3 PS2185-6 PS2186-5 PS2190-3 PS59/280-1 PS59 AMORE Svalbard Vidar Viking Haley, Brian A Frank, Martin Spielhagen, Robert F Fietzke, Jan Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years |
topic_facet |
302-CompSite Amundsen Basin Arctic Coring Expedition ACEX ARK-VIII/3 ARK-XVII/2 COMPCORE Composite Core Exp302 Gakkel Ridge Arctic Ocean Giant box corer GKG Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kasten corer Lomonosov Ridge Polarstern PS19/148 PS19/157 PS19/166 PS19/178 PS19/186 PS19/189 PS19/194 PS19 ARCTIC91 PS2156-1 PS2163-2 PS2171-1 PS2179-1 PS2185-3 PS2185-6 PS2186-5 PS2190-3 PS59/280-1 PS59 AMORE Svalbard Vidar Viking |
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 |
Dataset |
author |
Haley, Brian A Frank, Martin Spielhagen, Robert F Fietzke, Jan |
author_facet |
Haley, Brian A Frank, Martin Spielhagen, Robert F Fietzke, Jan |
author_sort |
Haley, Brian A |
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 |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.734430 https://doi.org/10.1594/PANGAEA.734430 |
op_coverage |
MEDIAN LATITUDE: 86.820207 * MEDIAN LONGITUDE: 121.816594 * SOUTH-BOUND LATITUDE: 80.086700 * WEST-BOUND LONGITUDE: 30.230000 * NORTH-BOUND LATITUDE: 89.986667 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-05T00:00:00 * DATE/TIME END: 2001-09-06T19:52:00 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(30.230000,144.166200,89.986667,80.086700) |
geographic |
Arctic Arctic Ocean Svalbard Greenland Gakkel Ridge Amundsen Basin |
geographic_facet |
Arctic Arctic Ocean Svalbard Greenland Gakkel Ridge Amundsen Basin |
genre |
amundsen basin Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice Svalbard |
genre_facet |
amundsen basin Arctic Arctic Arctic Ocean Greenland Lomonosov Ridge Sea ice Svalbard |
op_source |
Supplement to: Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Fietzke, Jan (2008): Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years. Paleoceanography, 23(1), PA1S13, https://doi.org/10.1029/2007PA001486 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.734430 https://doi.org/10.1594/PANGAEA.734430 |
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.734430 https://doi.org/10.1029/2007PA001486 |
_version_ |
1766366751576031232 |