Seismo-tectonic divisions of strong earthquakes with M S≥7.0 and their tectonic geomorphology along Xianshuihe-Xiaojiang fault zone |
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Authors: | Zhang Shi-min and Xie Fu-ren |
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Affiliation: | (1) Institute of Crustal Dynamics, China Seismological Bureau, 100085 Beijing, China |
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Abstract: | Seismo-tectonic areas of historical strong earthquakes with M S≥7 along Xianshuihe-Xiaojiang fault zone are divided, and their individual fault-pattern and tectonic geomorphology are analyzed. Those strong-earthquake areas are located in some special parts of the fault zone, where the major branch-faults of the fault zone form left stepping, parallel, and fork-like patterns. In the strong-earthquake areas structurally complicated basins are developed, such as pull-apart basins in fork-like area, in double stepping area, and in stepping and fork-like areas. Foundation item: Chinese Joint Seismological Science Foundation (9507424). Contribution No. 2001A003, Institute of Crustal Dynamics, China Seismological Bureau. |
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Keywords: | seismo-tectonic division fault zone pull-apart basin fault-clogged pond |
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