Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation
Increases in the low-field mass-specific magnetic susceptibility (chi), dropstones and the terrigenous sediment component from Ocean Drilling Program (ODP) Site 882 (similar to 45 degrees N) have been interpreted to indicate a major onset of ice-rafting to the sub-Arctic northwest Pacific Ocean duri...
Published in: | Earth and Planetary Science Letters |
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Language: | English |
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Online Access: | http://ir.ieecas.cn/handle/361006/10340 https://doi.org/10.1016/j.epsl.2011.05.029 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/10340 2023-06-11T04:08:54+02:00 Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation Bailey, I (Bailey, Ian)1 Liu, QS (Liu, Qingsong)2 Swann, GEA (Swann, George E. A.)3 Jiang, ZX (Jiang, Zhaoxia)2 Sun, YB (Sun, Youbin)4 Zhao, X (Zhao, Xiang)1 Roberts, AP (Roberts, Andrew P.)1 2011-07-15 http://ir.ieecas.cn/handle/361006/10340 https://doi.org/10.1016/j.epsl.2011.05.029 英语 eng EARTH AND PLANETARY SCIENCE LETTERS http://ir.ieecas.cn/handle/361006/10340 doi:10.1016/j.epsl.2011.05.029 null aeolian dust volcanic glass ice rafted debris North Pacific nutrient use northern hemisphere glaciation 期刊论文 2011 ftchinacascieeca https://doi.org/10.1016/j.epsl.2011.05.029 2023-05-08T13:23:37Z Increases in the low-field mass-specific magnetic susceptibility (chi), dropstones and the terrigenous sediment component from Ocean Drilling Program (ODP) Site 882 (similar to 45 degrees N) have been interpreted to indicate a major onset of ice-rafting to the sub-Arctic northwest Pacific Ocean during marine isotope stage (MIS) G6 (from similar to 2.75 Ma). In contrast, studies of the terrigenous content of sediments cored downwind of ODP Site 882 indicate that dust and disseminated volcanic ash deposition in the sub-Arctic Pacific increased markedly during MIS G6. To investigate the relative contribution of dust, volcanic ash and ice rafting to the Pliocene chi increase, we present new high-resolution environmental magnetic and ice-rafted debris records from ODP Sites 882 and 885. Our results demonstrate that the chi increase at both sites across MIS G6 is predominantly controlled by a previously overlooked mixture of aeolian dust and volcanic ash. Our findings call into question the reliability of chi as a proxy for ice-rafting to the North Pacific. They also highlight a previously undocumented link between iron fertilisation and biogeochemical cycling in the North Pacific at a key stage during intensification of late Pliocene northern hemisphere glaciation. Report Arctic Magnetic susceptibility Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Arctic Pacific Earth and Planetary Science Letters 307 3-4 253 265 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
aeolian dust volcanic glass ice rafted debris North Pacific nutrient use northern hemisphere glaciation |
spellingShingle |
aeolian dust volcanic glass ice rafted debris North Pacific nutrient use northern hemisphere glaciation Bailey, I (Bailey, Ian)1 Liu, QS (Liu, Qingsong)2 Swann, GEA (Swann, George E. A.)3 Jiang, ZX (Jiang, Zhaoxia)2 Sun, YB (Sun, Youbin)4 Zhao, X (Zhao, Xiang)1 Roberts, AP (Roberts, Andrew P.)1 Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
topic_facet |
aeolian dust volcanic glass ice rafted debris North Pacific nutrient use northern hemisphere glaciation |
description |
Increases in the low-field mass-specific magnetic susceptibility (chi), dropstones and the terrigenous sediment component from Ocean Drilling Program (ODP) Site 882 (similar to 45 degrees N) have been interpreted to indicate a major onset of ice-rafting to the sub-Arctic northwest Pacific Ocean during marine isotope stage (MIS) G6 (from similar to 2.75 Ma). In contrast, studies of the terrigenous content of sediments cored downwind of ODP Site 882 indicate that dust and disseminated volcanic ash deposition in the sub-Arctic Pacific increased markedly during MIS G6. To investigate the relative contribution of dust, volcanic ash and ice rafting to the Pliocene chi increase, we present new high-resolution environmental magnetic and ice-rafted debris records from ODP Sites 882 and 885. Our results demonstrate that the chi increase at both sites across MIS G6 is predominantly controlled by a previously overlooked mixture of aeolian dust and volcanic ash. Our findings call into question the reliability of chi as a proxy for ice-rafting to the North Pacific. They also highlight a previously undocumented link between iron fertilisation and biogeochemical cycling in the North Pacific at a key stage during intensification of late Pliocene northern hemisphere glaciation. |
format |
Report |
author |
Bailey, I (Bailey, Ian)1 Liu, QS (Liu, Qingsong)2 Swann, GEA (Swann, George E. A.)3 Jiang, ZX (Jiang, Zhaoxia)2 Sun, YB (Sun, Youbin)4 Zhao, X (Zhao, Xiang)1 Roberts, AP (Roberts, Andrew P.)1 |
author_facet |
Bailey, I (Bailey, Ian)1 Liu, QS (Liu, Qingsong)2 Swann, GEA (Swann, George E. A.)3 Jiang, ZX (Jiang, Zhaoxia)2 Sun, YB (Sun, Youbin)4 Zhao, X (Zhao, Xiang)1 Roberts, AP (Roberts, Andrew P.)1 |
author_sort |
Bailey, I (Bailey, Ian)1 |
title |
Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
title_short |
Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
title_full |
Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
title_fullStr |
Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
title_full_unstemmed |
Iron fertilisation and biogeochemical cycles in the sub-Arctic northwest Pacific during the late Pliocene intensification of northern hemisphere glaciation |
title_sort |
iron fertilisation and biogeochemical cycles in the sub-arctic northwest pacific during the late pliocene intensification of northern hemisphere glaciation |
publishDate |
2011 |
url |
http://ir.ieecas.cn/handle/361006/10340 https://doi.org/10.1016/j.epsl.2011.05.029 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Magnetic susceptibility |
genre_facet |
Arctic Magnetic susceptibility |
op_relation |
EARTH AND PLANETARY SCIENCE LETTERS http://ir.ieecas.cn/handle/361006/10340 doi:10.1016/j.epsl.2011.05.029 |
op_rights |
null |
op_doi |
https://doi.org/10.1016/j.epsl.2011.05.029 |
container_title |
Earth and Planetary Science Letters |
container_volume |
307 |
container_issue |
3-4 |
container_start_page |
253 |
op_container_end_page |
265 |
_version_ |
1768382527808995328 |