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Paleosols identified by rock magnetic properties indicate dam-outburst events of the Min River, eastern Tibetan Plateau
Liu, Weiming1; Cui, Peng1; Ge, Yonggang1; Yi, Zhiyu2
2018
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
Volume508Pages:139-147
SubtypeArticle
AbstractRiver 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.
KeywordFine-grained magnetic minerals Fan-delta deposition Paleosols Damming events
DOI10.1016/j.palaeo.2018.07.029
Indexed BySCI
WOS KeywordDRIVEN VALLEY INCISION ; TERRACE FORMATION ; GRAIN-SIZE ; MARGIN ; CHINA ; DEFORMATION ; PEDOGENESIS ; LANDSLIDES ; LANDSCAPE ; SICHUAN
Language英语
Quartile3区
Funding ProjectFrontier 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]
TOP
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000444359200011
Funding OrganizationFrontier grant ; 135 Strategic Program from the Institute of Mountain Hazards and Environment, CAS ; National Natural Science Foundation of China
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23875
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLiu, Weiming
Affiliation1.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
Recommended Citation
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.
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