DOI: 10.1016/j.quascirev.2018.02.010
Scopus记录号: 2-s2.0-85042477773
论文题名: A new record of late Pliocene-early Pleistocene aeolian loess–red clay deposits from the western Chinese Loess Plateau and its palaeoenvironmental implications
作者: Zan J. ; Fang X. ; Zhang W. ; Yan M. ; Zhang D.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 186 起始页码: 17
结束页码: 26
语种: 英语
英文关键词: Chinese Loess Plateau
; Loess-red clay
; Paleoclimatology
; Plio-Pleistocene transition
Scopus关键词: Deposits
; Landforms
; Magnetic susceptibility
; Magnetism
; Sediments
; Stratigraphy
; Chinese Loess Plateau
; Early pleistocene
; Middle Pleistocene
; Paleoclimatology
; Plio-pleistocene
; Red clay
; Stratigraphic correlation
; Western Chinese Loess Plateau
; Clay deposits
; aridification
; clay
; eolian deposit
; lithology
; loess
; magnetic susceptibility
; magnetostratigraphy
; monsoon
; new record
; paleoclimate
; paleoenvironment
; Pliocene-Pleistocene boundary
; stratigraphic correlation
; Ultisol
; China
; Gansu
; Linxia Basin
; Loess Plateau
英文摘要: The loess–red clay sequences in northern China provide high-resolution terrestrial records of Asian monsoon evolution and aridification of the Asian interior. To date, however, aeolian deposits of late Pliocene-early Pleistocene age (3.5–2.4 Ma) have only rarely been reported from the western Chinese Loess Plateau (CLP), which significantly hinders our understanding of the distribution of aeolian deposits and the palaeoenvironmental evolution of the region. Here, we present magnetostratigraphic, lithologic and magnetic susceptibility results for two recently-drilled boreholes from the north bank of Baxie River, central Linxia Basin, which are highly correlative with those of the loess–red clay deposits spanning the interval from 3.6 to 2.4 Ma in the eastern CLP. Our results provide the first direct evidence for the occurrence of late Pliocene-early Pleistocene aeolian deposits in the western CLP and provide new insights into the distribution of aeolian deposits in northern China. The spatial coherence of the magnetic susceptibility fluctuations further indicates that magnetic susceptibility is a powerful tool for stratigraphic correlation of late Pliocene aeolian deposits in the western CLP. In addition, our results demonstrate that erosional events may have occurred in the early or middle Pleistocene, and they may provide new insights into the reasons for the absence of loess–red clay deposits from 3.5 to 2.4 Ma in most parts of the western CLP. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112237
Appears in Collections: 气候减缓与适应
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作者单位: CAS Center for Excellence in Tibetan Plateau Earth Sciences, Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Zan J.,Fang X.,Zhang W.,et al. A new record of late Pliocene-early Pleistocene aeolian loess–red clay deposits from the western Chinese Loess Plateau and its palaeoenvironmental implications[J]. Quaternary Science Reviews,2018-01-01,186