Arid
DOI10.1080/00206814.2015.1055597
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
通讯作者Yi, Liang
来源期刊INTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
EISSN1938-2839
出版年2016
卷号58期号:1页码:49-57
英文摘要

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.


英文关键词Mariana Trench magnetostratigraphy Plio-Pleistocene abyssal erosion
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000361703200004
WOS关键词RARE-EARTH-ELEMENTS ; CONTRASTS ; SEDIMENTS ; DEPOSITS ; HISTORY ; CURVES ; EXPORT ; OCEAN
WOS类目Geology
WOS研究方向Geology
来源机构中国科学院地质与地球物理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193652
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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GB/T 7714
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]. 中国科学院地质与地球物理研究所,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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