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YANG Yan, ZHANG Xu-jiao, YE Pei-sheng, GAO Wan-li. 2012: Temporal-spatial development characteristics of the mud-rock flow in Lujiang segment of Nujiang River valley, western Yunnan Province. Geological Bulletin of China, 31(2-3): 343-350. DOI: 10.12097/gbc.2012020317
Citation: YANG Yan, ZHANG Xu-jiao, YE Pei-sheng, GAO Wan-li. 2012: Temporal-spatial development characteristics of the mud-rock flow in Lujiang segment of Nujiang River valley, western Yunnan Province. Geological Bulletin of China, 31(2-3): 343-350. DOI: 10.12097/gbc.2012020317
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Temporal-spatial development characteristics of the mud-rock flow in Lujiang segment of Nujiang River valley, western Yunnan Province

  • Faculty of Earth Science and Resources,China University of Geosciences,Beijing 100083,China;2. Institute of Geomechanics ,Chinese Academy of Geological Sciences,Beijing 100081,China

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  • Based on field investigation of the depositional sedimentary characteristics of mud-rock flow deposits in 21 key trenches and their basic formation conditions in the Lujiang River (a segment of the Nujiang River) , in combination with the indoor mathematical statistics of the mud-rock flow ditch catchment area and the vertical gradient, the authors used OSL to measure the age of the diluvium. The authors hold that the development of the mud-rock flow has obvious regional and periodic characteristics. The results obtained indicate that, with the Lujiang River as the boundary, the mud-rock flow migrated from the west bank to the east bank, the east bank mud-rock flow grew differently in the north and in the south, and tended to develop from north to south with obvious phases, and the growth of the mud-rock flow can be divided into three phases.
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