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《Journal of Northeast Petroleum University》 2017-06
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Arid climate alluvial fan-braided river system deposition:A case of Ziniquanzi formation in Kansuwate outcrop

Guo Ying;Luo Zijin;Yang Yong;Institute of Geology and Paleontology,Linyi University;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing);PetroChina Coalbed Methane Company Limited;Institute of Geomechanics,Chinese Academy of Geological Sciences;  
The outcrop of Ziniquanzi unit from Kansuwate section was chosen to study for improving the research of the depositional systems in southern margin of Junggar basin. All of the paleo sedimentary environment,the lithologic sequence,the type of lithofacies,the depositional systems and the depositional model have been cleared based on analysis of geochemical element,sedimentary structure and actual measurement of field section. We believe that from Niquanzi unit of Kansuwate section developed a alluvial fan braided stream sedimentary system under arid climate environment. This sedimentary system is remarkably affected by climate and has significant differences with alluvial fan braided stream sedimentary system under humid environment. Clearly on the low side,compared with soorgorica,limited distribution of alluvial fan with constant overlies and has features of widespread development of arrier beds and interbeds; braided stream is characterized by constant re-channels,limited duration and extending distance. Based on the fact that typical sedimentary characteristics are clear,we have further discussed the sedimentary model of this sedimentary system and analyzed reasons of its formation.
【Fund】: 国家科技重大专项(2013ZX05002-002)
【CateGory Index】: P618.13
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