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Paleomagnetic chronology and paleoenvironmental records from a drill core in the Liupan Mountain area, NE Tibetan Plateau

文献类型：期刊论文

作者Zhang, Zhigao3; Cai, Maotang1,2; Yang, Xingchen1,2; Qiao, Yansong1,2
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2024-05-15
卷号642页码:10
关键词Northeastern Tibetan Plateau Late Miocene Magnetostratigraphy Aridification
ISSN号0031-0182
DOI10.1016/j.palaeo.2024.112173
英文摘要The Liupan Mountain area, a north-trending mountain range, located in the northeastern-most active structural margin of the Tibetan Plateau and the convergence zone of the East Asian monsoon region, provides an ideal geological setting for investigating the tectonic events in the northeastern Tibetan Plateau and the Cenozoic evolution of the Asian aridification. We provide magnetostratigraphic and paleoenvironmental records for a Late Cenozoic sedimentary core drilled in the Guyuan in the Liupan Mountain. The lithology of the core can be roughly divided into two parts. The lower part (depths of 795-40 m) is composed of lacustrine sediments and the upper part (depths of 40-0 m) is composed of fluvial deposits. Magnetostratigraphy of the 795 m deep core dates the magnetic polarity sequence between similar to 8.2 and 0.03 Ma. The Brunhes/Matuyama, Matuyama/G, and Gauss/ Gilbert boundaries are located at depths of 53.55 m, 161.50 m, and 264.75 m, respectively. Four intervals with relatively higher accumulation rates were identified at ca. 7.64-6.03, 5.24-4.18, 3.60-2.58, and 1.07-0.78 Ma. All of this evidence is probably related to the pulses of tectonic uplift of the northeastern (NE) Tibetan Plateau. The frequency-dependent susceptibility values have exhibited obvious decreasing trends since similar to 8.2 Ma, indicating obvious aridification in the Guyuan Basin since the Late Miocene, but relatively high values occurred between 4.6 and 3.5 Ma. The enhancement of the aridity in the Liupan Mountain since similar to 8.2 Ma was due to the combined effect of global climate cooling and the uplift of the Northern Tibetan Plateau since the Late Miocene.
WOS关键词CHINESE LOESS PLATEAU ; WESTERN QAIDAM BASIN ; PLIOCENE RED CLAY ; RESOLUTION MAGNETO STRATIGRAPHY ; LATE CENOZOIC DEFORMATION ; DRIVEN CLIMATE-CHANGE ; EAST-ASIAN MONSOON ; ALTYN-TAGH FAULT ; LINXIA BASIN ; LACUSTRINE SEDIMENTS
资助项目National Natural Science Foun-dation of China[42102236] ; National Natural Science Foun-dation of China[41602366] ; Henan Provincial Science and Technology Research Project[232102320024] ; Henan Provincial Key Young Teachers Program of Higher Education[2020GGJS188]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:001221216500001
出版者ELSEVIER
资助机构National Natural Science Foun-dation of China ; Henan Provincial Science and Technology Research Project ; Henan Provincial Key Young Teachers Program of Higher Education
源URL[http://ir.igsnrr.ac.cn/handle/311030/205826]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Cai, Maotang
作者单位1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China
3.Anyang Normal Univ, Sch Resources Environm & Tourism, Anyang 455000, Henan, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhigao,Cai, Maotang,Yang, Xingchen,et al. Paleomagnetic chronology and paleoenvironmental records from a drill core in the Liupan Mountain area, NE Tibetan Plateau[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,642:10.
APA Zhang, Zhigao,Cai, Maotang,Yang, Xingchen,&Qiao, Yansong.(2024).Paleomagnetic chronology and paleoenvironmental records from a drill core in the Liupan Mountain area, NE Tibetan Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,642,10.
MLA Zhang, Zhigao,et al."Paleomagnetic chronology and paleoenvironmental records from a drill core in the Liupan Mountain area, NE Tibetan Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 642(2024):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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