Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau

doi:10.1016/j.palaeo.2018.07.029

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau
	Liu, Weiming 1; Cui, Peng 1; Ge, Yonggang 1; Yi, Zhiyu 2
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2018-11-01
卷号	508 页码:139-147
关键词	Fine-grained magnetic minerals Fan-delta deposition Paleosols Damming events
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2018.07.029
英文摘要	River terrace sediments are archives of past fluvial processes and they may also reflect a wide range of additional environmental processes. Detailed studies of river terrace sediments are important for understanding the role of tectonics, climate and extreme geomorphological events in fluvial evolution. Here, we present a sedimentary reconstruction using the combination of field description, magnetic measurements and optically stimulated luminescence and AMS C-14 dating of the Maoxian (MX) section in the third terrace of the Min river, in the eastern margin of the Tibetan Plateau. The section is mainly composed of clastic deposits and spans the interval from the last glacial to late Holocene. Apart from the silt at the bottom and the gravel layer in the middle, it is difficult to determine whether other clastic deposits were exposed sub-aerially. Multiple magnetic proxies indicate that the MX section contains three layers of pedogenic production of fine-grained magnetite/maghemite, which correspond to paleosol layers. The paleosol layers indicate the occurrence of at least three intervals of exposure to the atmosphere. The three paleosol layers were likely caused by dam-outburst events. The results demonstrate that rock magnetic methods are a useful approach for identifying paleosol layers in fluvial sediments.
资助项目	Frontier grant[110900K244] ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS[SDS-135-1701] ; National Natural Science Foundation of China[41661144028] ; National Natural Science Foundation of China[41771023] ; National Natural Science Foundation of China[91747207]
WOS关键词	DRIVEN VALLEY INCISION ; TERRACE FORMATION ; GRAIN-SIZE ; MARGIN ; CHINA ; DEFORMATION ; PEDOGENESIS ; LANDSLIDES ; LANDSCAPE ; SICHUAN
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444359200011
资助机构	Frontier grant ; Frontier grant ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Frontier grant ; Frontier grant ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Frontier grant ; Frontier grant ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Frontier grant ; Frontier grant ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88709]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Liu, Weiming
作者单位	1.Chinese Acad Sci, CAS Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Weiming,Cui, Peng,Ge, Yonggang,et al. Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2018,508:139-147.
APA	Liu, Weiming,Cui, Peng,Ge, Yonggang,&Yi, Zhiyu.(2018).Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,508,139-147.
MLA	Liu, Weiming,et al."Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 508(2018):139-147.