DOI: 10.1016/j.earscirev.2019.102947
论文题名: Loess genesis and worldwide distribution
作者: Li Y. ; Shi W. ; Aydin A. ; Beroya-Eitner M.A. ; Gao G.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 201 语种: 英语
中文关键词: Coverage
; Genesis
; Loess
; Spatial distribution
; Thickness
英文关键词: deposition
; fluvial deposit
; formation mechanism
; geographical distribution
; loess
; provenance
; sediment thickness
; sediment transport
; sedimentary petrology
英文摘要: Loess formation generally involves the four main stages of production, deflation, transportation, and deposition of loess particles. Traditionally, loesses are classified as glacial, desert, or other types based only on source area characteristics without taking into account provenance and transportation. Research on loess genesis is often local with only a few attempts at systematically overviewing worldwide loess distribution. Both the local and few global studies lack information on the variability in loess thickness, continuity, and areal extent. This review integrates a large body of information on loess source areas and transportation pathways and the existence of desert transition zones. Three modes of loess genesis, (1) continental glacier provenance-river transport, (2) mountain provenance-river transport, and (3) mountain provenance-river transport-desert transition, were identified. Global distribution maps of provenance and transport pathways of major loess areas and their different genesis modes were meticulously prepared. Maps showing the spatial distribution, thickness, and continuity of loess deposits were also composed and the sizes of loess-covered areas of each continent were re-estimated. The main features related to the distribution of the loess deposits on each continent are summarized for different regions or as a whole depending on the coverage of the source maps and references. © 2019 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166149
Appears in Collections: 气候变化与战略
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作者单位: Department of Earth Sciences and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Department of Geology and Geological Engineering, University of Mississippi, Oxford, United States; EarthThink Inc., San Juan, Metro Manila, Philippines
Recommended Citation:
Li Y.,Shi W.,Aydin A.,et al. Loess genesis and worldwide distribution[J]. Earth Science Reviews,2020-01-01,201