Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan
Abstract A dinoflagellate cyst record from the highly resolved Chiba composite section in Japan has been used to reconstruct sea-surface paleoceanographic changes across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the global stratotype, constituting the first detai...
Published in: | Progress in Earth and Planetary Science |
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2021
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Online Access: | http://dx.doi.org/10.1186/s40645-021-00438-3 https://link.springer.com/content/pdf/10.1186/s40645-021-00438-3.pdf https://link.springer.com/article/10.1186/s40645-021-00438-3/fulltext.html |
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crspringernat:10.1186/s40645-021-00438-3 2023-05-15T18:28:31+02:00 Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan Balota, Eseroghene J. Head, Martin J. Okada, Makoto Suganuma, Yusuke Haneda, Yuki Natural Sciences and Engineering Research Council of Canada 2021 http://dx.doi.org/10.1186/s40645-021-00438-3 https://link.springer.com/content/pdf/10.1186/s40645-021-00438-3.pdf https://link.springer.com/article/10.1186/s40645-021-00438-3/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Progress in Earth and Planetary Science volume 8, issue 1 ISSN 2197-4284 General Earth and Planetary Sciences journal-article 2021 crspringernat https://doi.org/10.1186/s40645-021-00438-3 2022-01-04T08:27:27Z Abstract A dinoflagellate cyst record from the highly resolved Chiba composite section in Japan has been used to reconstruct sea-surface paleoceanographic changes across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the global stratotype, constituting the first detailed study of this microfossil group from the Pleistocene of the Japanese Pacific margin. Cold, subarctic water masses from 794.2 ka gave way to warming and rapid retreat of the Subpolar Front at 789.3 ka, ~ 2000 years before the end of Marine Isotope Stage (MIS) 20. Throughout the fully interglacial conditions of MIS 19c, assemblages are consistent with warm sea surface temperatures but also reveal instability and latitudinal shifts in the Kuroshio Extension system. The abrupt dominance of Protoceratium reticulatum cysts between 772.9 and 770.4 ka (MIS 19b) registers the influence of cooler, mixed, nutrient-rich waters of the Kuroshio–Oyashio Interfrontal Zone resulting from a southward shift of the Kuroshio Extension. Its onset at 772.9 ka serves as a local ecostratigraphic marker for the Chibanian Stage Global Boundary Stratotype Section and Point (GSSP) which occurs just 1.15 m (= 1300 years) below it. An interval from 770.1 ka to the top of the examined succession at 765.8 ka (MIS 19a) represents warm, presumably stratified but still nutrient-elevated surface waters, indicating a northward shift of the Kuroshio Extension ~ 5 kyrs after the termination of full interglacial conditions on land. Article in Journal/Newspaper Subarctic Springer Nature (via Crossref) Pacific Oyashio ENVELOPE(157.000,157.000,50.000,50.000) Progress in Earth and Planetary Science 8 1 |
institution |
Open Polar |
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Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Balota, Eseroghene J. Head, Martin J. Okada, Makoto Suganuma, Yusuke Haneda, Yuki Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
topic_facet |
General Earth and Planetary Sciences |
description |
Abstract A dinoflagellate cyst record from the highly resolved Chiba composite section in Japan has been used to reconstruct sea-surface paleoceanographic changes across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the global stratotype, constituting the first detailed study of this microfossil group from the Pleistocene of the Japanese Pacific margin. Cold, subarctic water masses from 794.2 ka gave way to warming and rapid retreat of the Subpolar Front at 789.3 ka, ~ 2000 years before the end of Marine Isotope Stage (MIS) 20. Throughout the fully interglacial conditions of MIS 19c, assemblages are consistent with warm sea surface temperatures but also reveal instability and latitudinal shifts in the Kuroshio Extension system. The abrupt dominance of Protoceratium reticulatum cysts between 772.9 and 770.4 ka (MIS 19b) registers the influence of cooler, mixed, nutrient-rich waters of the Kuroshio–Oyashio Interfrontal Zone resulting from a southward shift of the Kuroshio Extension. Its onset at 772.9 ka serves as a local ecostratigraphic marker for the Chibanian Stage Global Boundary Stratotype Section and Point (GSSP) which occurs just 1.15 m (= 1300 years) below it. An interval from 770.1 ka to the top of the examined succession at 765.8 ka (MIS 19a) represents warm, presumably stratified but still nutrient-elevated surface waters, indicating a northward shift of the Kuroshio Extension ~ 5 kyrs after the termination of full interglacial conditions on land. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Balota, Eseroghene J. Head, Martin J. Okada, Makoto Suganuma, Yusuke Haneda, Yuki |
author_facet |
Balota, Eseroghene J. Head, Martin J. Okada, Makoto Suganuma, Yusuke Haneda, Yuki |
author_sort |
Balota, Eseroghene J. |
title |
Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
title_short |
Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
title_full |
Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
title_fullStr |
Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
title_full_unstemmed |
Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan |
title_sort |
paleoceanography and dinoflagellate cyst stratigraphy across the lower–middle pleistocene subseries (calabrian–chibanian stage) boundary at the chiba composite section, japan |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1186/s40645-021-00438-3 https://link.springer.com/content/pdf/10.1186/s40645-021-00438-3.pdf https://link.springer.com/article/10.1186/s40645-021-00438-3/fulltext.html |
long_lat |
ENVELOPE(157.000,157.000,50.000,50.000) |
geographic |
Pacific Oyashio |
geographic_facet |
Pacific Oyashio |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Progress in Earth and Planetary Science volume 8, issue 1 ISSN 2197-4284 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1186/s40645-021-00438-3 |
container_title |
Progress in Earth and Planetary Science |
container_volume |
8 |
container_issue |
1 |
_version_ |
1766211025657397248 |