Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea)
Abstract Sediments from the semi-enclosed Japan Sea are sensitive to paleoclimatic perturbations and they offer great opportunities for many regional and global paleoceanographic and paleoclimatic studies. These studies often require a robust chronology. However, due to rare preservation of calcareo...
Published in: | Progress in Earth and Planetary Science |
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Online Access: | https://doi.org/10.1186/s40645-020-00373-9 https://doaj.org/article/86214edbc55e4e48a2896c27a5b13fe5 |
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ftdoajarticles:oai:doaj.org/article:86214edbc55e4e48a2896c27a5b13fe5 2023-05-15T17:48:12+02:00 Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) Chuang Xuan Yuxi Jin Saiko Sugisaki Yasufumi Satoguchi Yoshitaka Nagahashi 2020-10-01T00:00:00Z https://doi.org/10.1186/s40645-020-00373-9 https://doaj.org/article/86214edbc55e4e48a2896c27a5b13fe5 EN eng SpringerOpen http://link.springer.com/article/10.1186/s40645-020-00373-9 https://doaj.org/toc/2197-4284 doi:10.1186/s40645-020-00373-9 2197-4284 https://doaj.org/article/86214edbc55e4e48a2896c27a5b13fe5 Progress in Earth and Planetary Science, Vol 7, Iss 1, Pp 1-19 (2020) Paleomagnetism Magnetostratigraphy Tephrostratigraphy Japan Sea IODP Expedition 346 Site U1424 Geography. Anthropology. Recreation G Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.1186/s40645-020-00373-9 2023-01-08T01:40:04Z Abstract Sediments from the semi-enclosed Japan Sea are sensitive to paleoclimatic perturbations and they offer great opportunities for many regional and global paleoceanographic and paleoclimatic studies. These studies often require a robust chronology. However, due to rare preservation of calcareous microfossils and drastic changes in surface water salinity during glacial lowstands, the construction of a traditional oxygen isotope stratigraphy for Japan Sea sediments is often difficult. Here, we use sediments recovered at Integrated Ocean Drilling Program (IODP) Expedition 346 Site U1424 to build an integrated Pliocene-Pleistocene reference magnetostratigraphy and tephrostratigraphy for sedimentary sequences from the region. Rock magnetic experiments indicate that magnetic remanence of Site U1424 sediments are carried primarily by (titano)magnetite with small contributions from high coercivity minerals (e.g., hematite) and possibly iron sulphides (pyrrhotite and/or greigite). Dark-colored sediments appear to contain less (titano)magnetite probably due to reductive diagenesis under euxinic conditions. Natural remanent magnetization (NRM) of u-channel samples covering a continuous ~ 167.6 m sediment sequence at Site U1424 was repeatedly measured at 1 cm intervals before and after stepwise demagnetization. Despite lower NRM intensity in dark-colored sediments, NRM directional data from both dark- and light-colored sediments are considered suitable for the construction of magnetostratigraphy. Site U1424 sediments clearly recorded the majority of the polarity chrons and subchrons within the last ~ 4.89 Myr, with the Cobb Mountain subchron, the end of Kaena subchron, and the onset of Nunivak subchron less well preserved. Sixteen tephra layers from the site were sampled for chemical composition analyses and the results were correlated to reference tephrostratigraphy of the region. Ages of the identified tephras are consistent with and can be well integrated with the magnetostratigraphy. The resulting age model ... Article in Journal/Newspaper Nunivak Directory of Open Access Journals: DOAJ Articles Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) Progress in Earth and Planetary Science 7 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Paleomagnetism Magnetostratigraphy Tephrostratigraphy Japan Sea IODP Expedition 346 Site U1424 Geography. Anthropology. Recreation G Geology QE1-996.5 |
spellingShingle |
Paleomagnetism Magnetostratigraphy Tephrostratigraphy Japan Sea IODP Expedition 346 Site U1424 Geography. Anthropology. Recreation G Geology QE1-996.5 Chuang Xuan Yuxi Jin Saiko Sugisaki Yasufumi Satoguchi Yoshitaka Nagahashi Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
topic_facet |
Paleomagnetism Magnetostratigraphy Tephrostratigraphy Japan Sea IODP Expedition 346 Site U1424 Geography. Anthropology. Recreation G Geology QE1-996.5 |
description |
Abstract Sediments from the semi-enclosed Japan Sea are sensitive to paleoclimatic perturbations and they offer great opportunities for many regional and global paleoceanographic and paleoclimatic studies. These studies often require a robust chronology. However, due to rare preservation of calcareous microfossils and drastic changes in surface water salinity during glacial lowstands, the construction of a traditional oxygen isotope stratigraphy for Japan Sea sediments is often difficult. Here, we use sediments recovered at Integrated Ocean Drilling Program (IODP) Expedition 346 Site U1424 to build an integrated Pliocene-Pleistocene reference magnetostratigraphy and tephrostratigraphy for sedimentary sequences from the region. Rock magnetic experiments indicate that magnetic remanence of Site U1424 sediments are carried primarily by (titano)magnetite with small contributions from high coercivity minerals (e.g., hematite) and possibly iron sulphides (pyrrhotite and/or greigite). Dark-colored sediments appear to contain less (titano)magnetite probably due to reductive diagenesis under euxinic conditions. Natural remanent magnetization (NRM) of u-channel samples covering a continuous ~ 167.6 m sediment sequence at Site U1424 was repeatedly measured at 1 cm intervals before and after stepwise demagnetization. Despite lower NRM intensity in dark-colored sediments, NRM directional data from both dark- and light-colored sediments are considered suitable for the construction of magnetostratigraphy. Site U1424 sediments clearly recorded the majority of the polarity chrons and subchrons within the last ~ 4.89 Myr, with the Cobb Mountain subchron, the end of Kaena subchron, and the onset of Nunivak subchron less well preserved. Sixteen tephra layers from the site were sampled for chemical composition analyses and the results were correlated to reference tephrostratigraphy of the region. Ages of the identified tephras are consistent with and can be well integrated with the magnetostratigraphy. The resulting age model ... |
format |
Article in Journal/Newspaper |
author |
Chuang Xuan Yuxi Jin Saiko Sugisaki Yasufumi Satoguchi Yoshitaka Nagahashi |
author_facet |
Chuang Xuan Yuxi Jin Saiko Sugisaki Yasufumi Satoguchi Yoshitaka Nagahashi |
author_sort |
Chuang Xuan |
title |
Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
title_short |
Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
title_full |
Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
title_fullStr |
Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
title_full_unstemmed |
Integrated Pliocene-Pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at IODP Site U1424 (Yamato Basin, Japan Sea) |
title_sort |
integrated pliocene-pleistocene magnetostratigraphy and tephrostratigraphy of deep-sea sediments at iodp site u1424 (yamato basin, japan sea) |
publisher |
SpringerOpen |
publishDate |
2020 |
url |
https://doi.org/10.1186/s40645-020-00373-9 https://doaj.org/article/86214edbc55e4e48a2896c27a5b13fe5 |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Yamato |
geographic_facet |
Yamato |
genre |
Nunivak |
genre_facet |
Nunivak |
op_source |
Progress in Earth and Planetary Science, Vol 7, Iss 1, Pp 1-19 (2020) |
op_relation |
http://link.springer.com/article/10.1186/s40645-020-00373-9 https://doaj.org/toc/2197-4284 doi:10.1186/s40645-020-00373-9 2197-4284 https://doaj.org/article/86214edbc55e4e48a2896c27a5b13fe5 |
op_doi |
https://doi.org/10.1186/s40645-020-00373-9 |
container_title |
Progress in Earth and Planetary Science |
container_volume |
7 |
container_issue |
1 |
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1766153462533324800 |