Topographic Difference and Morphologic Evolution between the Two Sides of the Northern Margin of West Qinling-Lajishan Fault
详细信息
- 责任者：Gao Mingxing (Key Laboratory of Active Tectonics and Volcano ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Xu Xiwei
- 刊名：Seismology and Geology
- 出版年：2013
- 卷期：35(2)
- 关键词：地貌 ; landforms ; 青藏高原 ; Qinghai-Tibetan Plateau
- 页码：p.222-233
- 图表：illus., 1 table, 33 refs.
- 分类号：1400
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
The aim of this paper is to understand the topographic differences and morphologic evolution mechanisms between the eastern and the western side of the northern margin of West Qinling-Lajishan Fault. The digital elevation model combined with geologic data was used to: 1) extract local relief and swath profiles to quantitatively reveal the topographic characters of the eastern and the western side of the boundary; 2 ) make statistics on the elevation modes of the Cenozoic sandstones on both sides of the fault. The differential topographic evolution history of the two sides of the boundary indicates the complexity of Cenozoic strata development. Moreover,the lithological combination and sedimentary facies of the Cenozoic strata in the eastern and western side of the northern margin of West Qinling-Lajishan boundary are summarized,and the denudation and aggradation history of the two sides of the boundary are compared in this paper. The results also indicate the differential tectonic evolution history between the two sides of the boundary.
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