Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores
The carbonate-free abyss of the North Pacific defies most paleoceanographic proxy methods and hence remains a "blank spot" in ocean and climate history. Paleomagnetic and rock magnetic, geochemical, and sedimentological methods were combined to date and analyze seven middle to late Pleisto...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.862899 2023-05-15T13:44:47+02:00 Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores Korff, Lucia von Dobeneck, Tilo Frederichs, Thomas Kasten, Sabine Kuhn, Gerhard Gersonde, Rainer Diekmann, Bernhard MEDIAN LATITUDE: 38.623345 * MEDIAN LONGITUDE: 160.563555 * SOUTH-BOUND LATITUDE: 38.011700 * WEST-BOUND LONGITUDE: 149.484800 * NORTH-BOUND LATITUDE: 40.291700 * EAST-BOUND LONGITUDE: 169.280800 * DATE/TIME START: 2009-08-16T14:36:00 * DATE/TIME END: 2009-08-23T05:23:00 2016-07-07 application/zip, 11 datasets https://doi.pangaea.de/10.1594/PANGAEA.862899 https://doi.org/10.1594/PANGAEA.862899 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.862899 https://doi.org/10.1594/PANGAEA.862899 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Korff, Lucia; von Dobeneck, Tilo; Frederichs, Thomas; Kasten, Sabine; Kuhn, Gerhard; Gersonde, Rainer; Diekmann, Bernhard (2016): Cyclic magnetite dissolution in Pleistocene sediments of the abyssal northwest Pacific Ocean: Evidence for glacial oxygen depletion and carbon trapping. Paleoceanography, 31(5), 600-624, https://doi.org/10.1002/2015PA002882 Center for Marine Environmental Sciences Innovatives Nordpazifik Experiment - Paläoozeanographie und Magnetik INOPEX MARUM Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.862899 https://doi.org/10.1002/2015PA002882 2023-01-20T07:33:45Z The carbonate-free abyss of the North Pacific defies most paleoceanographic proxy methods and hence remains a "blank spot" in ocean and climate history. Paleomagnetic and rock magnetic, geochemical, and sedimentological methods were combined to date and analyze seven middle to late Pleistocene northwest Pacific sediment cores from water depths of 5100 to 5700 m. Besides largely coherent tephra layers, the most striking features of these records are nearly magnetite-free zones corresponding to glacial marine isotope stages (MISs) 22, 12, 10, 8, 6, and 2. Magnetite depletion is correlated with organic carbon and quartz content and anticorrelated with biogenic barite and opal content. Within interglacial sections and mid-Pleistocene transition glacial stages MIS 20, 18, 16, and 14, magnetite fractions of detrital, volcanic, and bacterial origin are all well preserved. Such alternating successions of magnetic iron mineral preservation and depletion are known from sapropel-marl cycles, which accumulated under periodically changing bottom water oxygen and redox conditions. In the open central northwest Pacific Ocean, the only conceivable mechanism to cause such abrupt change is a modified glacial bottom water circulation. During all major glaciations since MIS 12, oxygen-depleted Antarctic Bottom Water (AABW)-sourced bottom water seems to have crept into the abyssal northwest Pacific below ~5000 m depth, thereby changing redox conditions in the sediment, trapping and preserving dissolved and particulate organic matter and, in consequence, reducing and dissolving both, biogenic and detrital magnetite. At deglaciation, a downward progressing oxidation front apparently remineralized and released these sedimentary carbon reservoirs without replenishing the magnetite losses. Dataset Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Pacific ENVELOPE(149.484800,169.280800,40.291700,38.011700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Center for Marine Environmental Sciences Innovatives Nordpazifik Experiment - Paläoozeanographie und Magnetik INOPEX MARUM |
spellingShingle |
Center for Marine Environmental Sciences Innovatives Nordpazifik Experiment - Paläoozeanographie und Magnetik INOPEX MARUM Korff, Lucia von Dobeneck, Tilo Frederichs, Thomas Kasten, Sabine Kuhn, Gerhard Gersonde, Rainer Diekmann, Bernhard Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
topic_facet |
Center for Marine Environmental Sciences Innovatives Nordpazifik Experiment - Paläoozeanographie und Magnetik INOPEX MARUM |
description |
The carbonate-free abyss of the North Pacific defies most paleoceanographic proxy methods and hence remains a "blank spot" in ocean and climate history. Paleomagnetic and rock magnetic, geochemical, and sedimentological methods were combined to date and analyze seven middle to late Pleistocene northwest Pacific sediment cores from water depths of 5100 to 5700 m. Besides largely coherent tephra layers, the most striking features of these records are nearly magnetite-free zones corresponding to glacial marine isotope stages (MISs) 22, 12, 10, 8, 6, and 2. Magnetite depletion is correlated with organic carbon and quartz content and anticorrelated with biogenic barite and opal content. Within interglacial sections and mid-Pleistocene transition glacial stages MIS 20, 18, 16, and 14, magnetite fractions of detrital, volcanic, and bacterial origin are all well preserved. Such alternating successions of magnetic iron mineral preservation and depletion are known from sapropel-marl cycles, which accumulated under periodically changing bottom water oxygen and redox conditions. In the open central northwest Pacific Ocean, the only conceivable mechanism to cause such abrupt change is a modified glacial bottom water circulation. During all major glaciations since MIS 12, oxygen-depleted Antarctic Bottom Water (AABW)-sourced bottom water seems to have crept into the abyssal northwest Pacific below ~5000 m depth, thereby changing redox conditions in the sediment, trapping and preserving dissolved and particulate organic matter and, in consequence, reducing and dissolving both, biogenic and detrital magnetite. At deglaciation, a downward progressing oxidation front apparently remineralized and released these sedimentary carbon reservoirs without replenishing the magnetite losses. |
format |
Dataset |
author |
Korff, Lucia von Dobeneck, Tilo Frederichs, Thomas Kasten, Sabine Kuhn, Gerhard Gersonde, Rainer Diekmann, Bernhard |
author_facet |
Korff, Lucia von Dobeneck, Tilo Frederichs, Thomas Kasten, Sabine Kuhn, Gerhard Gersonde, Rainer Diekmann, Bernhard |
author_sort |
Korff, Lucia |
title |
Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
title_short |
Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
title_full |
Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
title_fullStr |
Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
title_full_unstemmed |
Age model, magnetic and geochemical data of sediment core SO202/1_39-3 and magnetic susceptibility data of other INOPEX cores |
title_sort |
age model, magnetic and geochemical data of sediment core so202/1_39-3 and magnetic susceptibility data of other inopex cores |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.862899 https://doi.org/10.1594/PANGAEA.862899 |
op_coverage |
MEDIAN LATITUDE: 38.623345 * MEDIAN LONGITUDE: 160.563555 * SOUTH-BOUND LATITUDE: 38.011700 * WEST-BOUND LONGITUDE: 149.484800 * NORTH-BOUND LATITUDE: 40.291700 * EAST-BOUND LONGITUDE: 169.280800 * DATE/TIME START: 2009-08-16T14:36:00 * DATE/TIME END: 2009-08-23T05:23:00 |
long_lat |
ENVELOPE(149.484800,169.280800,40.291700,38.011700) |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Korff, Lucia; von Dobeneck, Tilo; Frederichs, Thomas; Kasten, Sabine; Kuhn, Gerhard; Gersonde, Rainer; Diekmann, Bernhard (2016): Cyclic magnetite dissolution in Pleistocene sediments of the abyssal northwest Pacific Ocean: Evidence for glacial oxygen depletion and carbon trapping. Paleoceanography, 31(5), 600-624, https://doi.org/10.1002/2015PA002882 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.862899 https://doi.org/10.1594/PANGAEA.862899 |
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.862899 https://doi.org/10.1002/2015PA002882 |
_version_ |
1766206444329238528 |