Magnetostratigraphic evidence for deep-sea erosion on the Pacific Plate, south of Mariana Trench, since the middle Pleistocene: potential constraints for Antarctic bottom water circulation
Deng, Xiguang1; Yi, Liang2,3; Paterson, Greig A.4; Qin, Huafeng2; Wang, Haifeng1; Yao, Huiqiang1; Ren, Jiangbo1; Ge, Junyi5; Xu, Hongzhou3; Deng, Chenglong2; Zhu, Rixiang2
2016-01-02
发表期刊INTERNATIONAL GEOLOGY REVIEW
卷号58期号:1页码:49-57
摘要The Antarctic Bottom Water (AABW) current plays a crucial role in storing and transporting heat, water, and nutrients around the world. However, it is impossible to monitor AABW in the Plio-Pleistocene by direct measurement. Hence, abyssal erosion was usually chosen as an effective indicator of the presence of the AABW in the Indian and Eastern Pacific Oceans during that period. Here, we report a high-resolution magnetostratigraphy of a gravity core, the JL7KGC-01A from the south of the Mariana Trench, northwest Pacific Ocean. The main results are as follows: (1) polarity data suggest that the sequence recorded the late Gauss chron to the early Brunhes chron, including the Jaramillo, Cobb Mountain, and Olduvai normal subchrons; (2) the sedimentary processes in the study area since 2.9Ma show three stages of sedimentation: 83cm/Ma during 2.9-1.2Ma, 183cm/Ma during 1.2-0.7Ma, and no sedimentation since similar to 0.7Ma; (3) the area south of the Mariana Trench experienced a significant change in the deposition rate at 1.2Ma, which could be correlated with the intensified desertification in inland Asia, and experienced a prominent depositional hiatus since the early middle Pleistocene, which likely resulted from the enhanced/expanded AABW. Based on these new polarity data and comparisons with previous studies around the Pacific Ocean, we therefore propose that the AABW experienced a notable change during the early-mid Pleistocene transition.
文章类型Article
关键词Mariana Trench Magnetostratigraphy Plio-pleistocene Abyssal Erosion
WOS标题词Science & Technology ; Physical Sciences
DOI10.1080/00206814.2015.1055597
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收录类别SCI
语种英语
关键词[WOS]ISOTHERMAL REMANENT MAGNETIZATION ; MANGANESE-NODULE DEVELOPMENT ; RARE-EARTH-ELEMENTS ; ACQUISITION CURVES ; ROSS-SEA ; MYR AGO ; OCEAN ; SEDIMENTS ; HYSTERESIS ; CONTRASTS
WOS类目Geology
WOS记录号WOS:000361703200004
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文献类型期刊论文
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条目标识符http://ir.idsse.ac.cn/handle/183446/496
专题深海科学研究部_深海地球物理与资源研究室
作者单位1.Guangzhou Marine Geol Survey, Minist Land & Resources, Key Lab Marine Mineral Resources, Guangzhou, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
3.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Vertebrate Palaeontol & Palaeoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
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Deng, Xiguang,Yi, Liang,Paterson, Greig A.,et al. Magnetostratigraphic evidence for deep-sea erosion on the Pacific Plate, south of Mariana Trench, since the middle Pleistocene: potential constraints for Antarctic bottom water circulation[J]. INTERNATIONAL GEOLOGY REVIEW,2016,58(1):49-57.
APA Deng, Xiguang.,Yi, Liang.,Paterson, Greig A..,Qin, Huafeng.,Wang, Haifeng.,...&Zhu, Rixiang.(2016).Magnetostratigraphic evidence for deep-sea erosion on the Pacific Plate, south of Mariana Trench, since the middle Pleistocene: potential constraints for Antarctic bottom water circulation.INTERNATIONAL GEOLOGY REVIEW,58(1),49-57.
MLA Deng, Xiguang,et al."Magnetostratigraphic evidence for deep-sea erosion on the Pacific Plate, south of Mariana Trench, since the middle Pleistocene: potential constraints for Antarctic bottom water circulation".INTERNATIONAL GEOLOGY REVIEW 58.1(2016):49-57.
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