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《Geology of Anhui》 2008-04
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GRAIN-SIZE ANALYSIS AND DEPOSITIONAL ENVIRONMENT OF BOXING DEPRESSION ES4, DONGYING, SHANDONG PROVINCE

HAO Xi,LI Shuang-ying(School of Resources and Environment,Hefei University of technology,Hefei 230009,China)  
Based on the grain-size statistical analysis of Boxing Depression Es4 's sandstones,Dongying,Shandong Province,this paper acquires their grain-size parameters of sorting degree,standard deviation and peakedness etc.,and identifies turbidity current and delta(river) depositional environment by using Sahu grain-size decision function and C-M pattern.The 6 kinds of grain-size probability cumulative frequency curves indicate that depositional environment includes sublacustrine fan,delta front distributary channel,mouth bar and farther sand bank etc.
【CateGory Index】: P618.13
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