Subdivision, Characteristics, and Varieties of the Source-to-Sink Systems of the Modern Lake Erhai Basin, Yunnan Province
Zhu Xiu
Zhu Hongtao
Zeng Hongliu
Yang Xianghua
Abstract：Studies of the modern Source-to-Sink system in Lake Basin can provide a basis for studying their ancient counter parts.In this paper,we analyzed characteristics of modern Source-to-Sink systems in the Lake Erhai basin and identified three subsystems in the western (S2S-W),eastern (S2S-E) and northern (S2S-N) shores of the Lake Erhai basin,respectively.In S2S-E,the bedrocks in source area are primarily carbonate rocks and the number and scale of sedimentary bodies in sink area is small (＜10 km2);in S2S-W,the bedrocks in source area consist of metamorphic rock sand a few granitic and carbonate rocks,and large scale (＞40 km2) sedimentary bodies in sink area easily developed,feature in gextensive and concatenated distribution;in S2S-N(axial source),bedrocks are composed mainly of clastic rocks and the scale of sedimentary bodies in sink area are large.Studies of modern Source-to-Sink system in Lake basin suggest that there are many Source-to-Sink systems in the same basin (sag) and in which significant distinctions between the watershed area,sedimentary body area and sedimentation response exist because of controlling factors such as bedrock type,tectonic activity,paleomorphology,basin boundaries,and transport channel,among others,which implies that more attention should be paid to the distinguishing characteristics of Source-to-Sink systems in further study of ancient Source-to-Sink systems.
Keywords：Lake Erhai basinSource-to-Sink system (S2S)bedrockvarietiescontrolling factorssedimentarypetroleum geology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：15( 2010-2024 )