Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica
ABSTRACT: Due to the unique geographical location and sensitive response to global climate changes, the Antarctic region plays an important role in paleoclimate researches, and attracts great attentions from various scholars. One 324 cm long sediment core (ANT29-P7-09) was obtained from Prydz Bay, A...
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ftdoajarticles:oai:doaj.org/article:d899bfedafe04edfbba498bac7e5fd71 2023-05-15T13:54:00+02:00 Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica Zhong-yang Lin Xi-bin Han Xiang-long Jin Chao-hui Zhu Liang Yi Zheng-gang Li 2019-12-01T00:00:00Z https://doi.org/10.31035/cg2018134 https://doaj.org/article/d899bfedafe04edfbba498bac7e5fd71 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S2096519220300070 https://doaj.org/toc/2096-5192 2096-5192 doi:10.31035/cg2018134 https://doaj.org/article/d899bfedafe04edfbba498bac7e5fd71 China Geology, Vol 2, Iss 4, Pp 493-500 (2019) Late Quaternary Paleoenvironment Climate change Paleomagnetism Alternate cooling and heating Polar science expedition engineering Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.31035/cg2018134 2023-02-12T01:31:24Z ABSTRACT: Due to the unique geographical location and sensitive response to global climate changes, the Antarctic region plays an important role in paleoclimate researches, and attracts great attentions from various scholars. One 324 cm long sediment core (ANT29-P7-09) was obtained from Prydz Bay, Antarctica, during the 29th Chinese National Antarctic Research Expedition. Based on sediment particle size, TOC, δ13C analyses and magnetism data, the authors show that the dominant magnetic minerals are ferrimagnetic pseudo single domain (PSD)-multi domain (MD) magnetite. Variations in the paleoenvironmental records allow us to define 4 zones in the core. These zones outline the climatic variations in the region since the late Early Pleistocene, including a warm period, a transitional period, and a cold period. The magnetic particle assemblage varies with glacial-interglacial cycles. Abrupt changes in particle size, TOC content, and geomagnetism occur at 102–90 cm deep in the core, indicating a sudden warming in the Antarctic region, signaling the onset of the Holocene. The authors identified 3 additional climatic signals in the middle part of the core (232–162 cm) that show unexpected cooling events during the warm period in Prydz Bay, Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Prydz Bay Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Prydz Bay China Geology 3 4 495 503 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Late Quaternary Paleoenvironment Climate change Paleomagnetism Alternate cooling and heating Polar science expedition engineering Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 |
spellingShingle |
Late Quaternary Paleoenvironment Climate change Paleomagnetism Alternate cooling and heating Polar science expedition engineering Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 Zhong-yang Lin Xi-bin Han Xiang-long Jin Chao-hui Zhu Liang Yi Zheng-gang Li Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
topic_facet |
Late Quaternary Paleoenvironment Climate change Paleomagnetism Alternate cooling and heating Polar science expedition engineering Engineering (General). Civil engineering (General) TA1-2040 Geology QE1-996.5 |
description |
ABSTRACT: Due to the unique geographical location and sensitive response to global climate changes, the Antarctic region plays an important role in paleoclimate researches, and attracts great attentions from various scholars. One 324 cm long sediment core (ANT29-P7-09) was obtained from Prydz Bay, Antarctica, during the 29th Chinese National Antarctic Research Expedition. Based on sediment particle size, TOC, δ13C analyses and magnetism data, the authors show that the dominant magnetic minerals are ferrimagnetic pseudo single domain (PSD)-multi domain (MD) magnetite. Variations in the paleoenvironmental records allow us to define 4 zones in the core. These zones outline the climatic variations in the region since the late Early Pleistocene, including a warm period, a transitional period, and a cold period. The magnetic particle assemblage varies with glacial-interglacial cycles. Abrupt changes in particle size, TOC content, and geomagnetism occur at 102–90 cm deep in the core, indicating a sudden warming in the Antarctic region, signaling the onset of the Holocene. The authors identified 3 additional climatic signals in the middle part of the core (232–162 cm) that show unexpected cooling events during the warm period in Prydz Bay, Antarctica. |
format |
Article in Journal/Newspaper |
author |
Zhong-yang Lin Xi-bin Han Xiang-long Jin Chao-hui Zhu Liang Yi Zheng-gang Li |
author_facet |
Zhong-yang Lin Xi-bin Han Xiang-long Jin Chao-hui Zhu Liang Yi Zheng-gang Li |
author_sort |
Zhong-yang Lin |
title |
Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
title_short |
Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
title_full |
Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
title_fullStr |
Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
title_full_unstemmed |
Magnetostratigraphy and paleoenvironmental significance of sediments from ANT29-P7-09 core in Prydz Bay, Antarctica |
title_sort |
magnetostratigraphy and paleoenvironmental significance of sediments from ant29-p7-09 core in prydz bay, antarctica |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2019 |
url |
https://doi.org/10.31035/cg2018134 https://doaj.org/article/d899bfedafe04edfbba498bac7e5fd71 |
geographic |
Antarctic The Antarctic Prydz Bay |
geographic_facet |
Antarctic The Antarctic Prydz Bay |
genre |
Antarc* Antarctic Antarctica Prydz Bay |
genre_facet |
Antarc* Antarctic Antarctica Prydz Bay |
op_source |
China Geology, Vol 2, Iss 4, Pp 493-500 (2019) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2096519220300070 https://doaj.org/toc/2096-5192 2096-5192 doi:10.31035/cg2018134 https://doaj.org/article/d899bfedafe04edfbba498bac7e5fd71 |
op_doi |
https://doi.org/10.31035/cg2018134 |
container_title |
China Geology |
container_volume |
3 |
container_issue |
4 |
container_start_page |
495 |
op_container_end_page |
503 |
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1766259508773912576 |