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Response of eolian quartz flux and grain size in the Parece Vela Basin sediment to the mid-Pleistocene transition

文献类型：期刊论文

作者Yan, Yu1,3; Jiang, Fuqing1,2,3,4; Zeng, Zhigang1,2,3,4; Zhang, Zhaohui5; Zheng, Hao1,3
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2022-09-15
卷号236页码:9
ISSN号1367-9120
关键词Mid -Pleistocene transition Source Quartz Parece Vela Basin
DOI10.1016/j.jseaes.2022.105332
通讯作者Jiang, Fuqing(fqjiang@qdio.ac.cn) ; Zeng, Zhigang(zgzeng@qdio.ac.cn)
英文摘要The most significant climate changes in the Quaternary occurred in the mid-Pleistocene transition (MPT). However, as the main component of eolian dust, it remains unknown how the fluxes and components of quartz responded to the MPT. We recovered a sediment core from the Parece Vela Basin (PVB), which dated back to 2.1 Ma, and quantitatively separated quartz from the sediments in order to track source area and transport mechanism. The grain size compositions, morphological characteristics, oxygen isotope compositions, and crystallinity indices of quartz showed that quartz minerals in the sediments were composed of fine-grained endmembers (EM1) with a mode grain size at 3.2 mu m, and coarse-grained endmembers (EM2) with a mode grain size at 9.5 mu m. The EM1 quartz mainly came from the Mongolian Gobi and Taklimakan Desert, and the EM2 quartz was predominantly derived from volcanic island arc. By fitting the grain size composition with the Weibull function, we were able to quantitatively separated EM1 and EM2 quartz fractions, and calculated the contents and mass accumulation rates (MARs) of eolian quartz. The mode grain sizes of eolian quartz increased at 1.2 Ma, but fluctuated during the mid-Pleistocene. The MARs of the eolian quartz have increased significantly since the midPleistocene, most likely due to enhanced aridity in the Asia interior. Our study demonstrates that eolian quartz in the northwest Pacific can be used to trace the long-term paleoclimate change in the Asia continent.
资助项目National Natural Science Foundation of China[42076049] ; National Natural Science Foundation of China[41776065] ; National Natural Science Foundation of China[91958213] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2020KG15] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000]
WOS研究方向Geology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000861855000002
源URL[http://ir.qdio.ac.cn/handle/337002/180708]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Jiang, Fuqing; Zeng, Zhigang
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266061, Peoples R China
5.Zhejiang Univ, Ocean Coll, Inst Marine Chem & Environm, 1 Zheda Rd, Zhoushan 316021, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Yu,Jiang, Fuqing,Zeng, Zhigang,et al. Response of eolian quartz flux and grain size in the Parece Vela Basin sediment to the mid-Pleistocene transition[J]. JOURNAL OF ASIAN EARTH SCIENCES,2022,236:9.
APA Yan, Yu,Jiang, Fuqing,Zeng, Zhigang,Zhang, Zhaohui,&Zheng, Hao.(2022).Response of eolian quartz flux and grain size in the Parece Vela Basin sediment to the mid-Pleistocene transition.JOURNAL OF ASIAN EARTH SCIENCES,236,9.
MLA Yan, Yu,et al."Response of eolian quartz flux and grain size in the Parece Vela Basin sediment to the mid-Pleistocene transition".JOURNAL OF ASIAN EARTH SCIENCES 236(2022):9.

入库方式： OAI收割

来源：海洋研究所

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