QUATERNARY GEOLOGY & GEOMORPHOLOGY

20102530 Bi Zhiwei(Institution of Hydrogeology and Environmental Geology,CAGS,Shijiazhuang 050061,China);Yang Zhenjing Grain-Size Characteristics and Sediment Environment of Quaternary Sediments in the Central Tarim Basin(Arid Land Geography,ISSN1000-6060,CN65-1103/X,31(3),2009,p.335-339,2 illus.,8 refs.)Key words:sedimentary environment,Quaternary,Tarim BasinTazhong KT2 hole is located at hinterland of Tarim Basin,Xinjiang,with depth of 885.99 m,revealed the Quaternary stratum.The test results were illustrated as protracted frequency graph,probability cumulative graph,and other datum with Mastersizer-2000 Laser Grain-size analyzer.The rock core is mainly made of silt sand,silt-fine sand,fine sand.A few coarse sand,multilayer claypan,average grain diameter are in the range of 2.5～6.2 Φ,the deposition environment was in comparative stabilization.According to rock stratum,age measure datum and pollen information,Tarim Basin was mainly at river-lake sediment phase in early Pleistocene,later appeared eolian-form phase deposition.20102531 Chen Fahu(Key Laboratory of Western China’s Environmental Systems,Lanzhou University,Lanzhou 730000,China);Chen Jianhui Discussion on the Westerly-Dominated Climate Mo