Bouma sequences and other sedimentary structures formed by sedimentary gravity flow, such as slumpfolded layers and flute casts, are really well developed in upper parts of the Carboniferous in the Yeyungou area of South Tianshan in China. Based on analyses of sections and lithofacies of the upper parts of Carboniferous, accompanied bC-M diagram from the statistics of sand grains in the turbidites, the authors point out that the upper parts of the Carboniferous in the Yeyungou area of South Tianshan in China were formed in submarine fan. Lithofacies such as disorganized gravels (A-1), massive sandstones without dish structures (B-2), proximal turbidites (C), distal turbidites (D), slumpfolded layers (F), and shales interval siliceous rocks (G) have been recognized in the strata, which are associated with construction of inner fan, mid fan and outer fan according to Walker models of submarine fan. It is verified that there is a sedimentary environment for deep marine fan in the Carboniferous in the Yeyungou area of South Tianshan in China. Paleo current orientation shows that the sediments came from the south side, paleo continent of Tarim. The data of chemical composition of sediments indicate that the tectonic background of the turbidites is passive continental margin environment.
1 新疆地质矿产局地质矿产研究所，新疆地质矿产局第一区调大队.新疆古生界（新疆地层总结之二）（下）.乌鲁木齐：新疆人民出版社，1991.250～266
2 新疆地质矿产局.新疆维吾尔自治区区域地质志.北京：地质出版社,1992.149～168
3 刘训，Graham S, Chang E, 吴绍祖等.塔里木板块周缘晚古生代以来的构造演化.地球科学，1994,19（6）：715～726
4 Graham S A, Brassell S, Carroll A R, et al.. Characteristics of selected petroleum source rocks, Xingjiang Uygur Autonomous Region, Northwest China. AAPG Bulletin, 1990, 74(4): 493～512
5 Coleman R G. Continental growth of Northwest China. Tectonics, 1989, 8(3): 621～635
6 Gao Jun, Li Maosong, Xiao Xuchang, Tang Yaoqing, He Guoqi. Paleozoic tectonic evolution of the Tianshan Orogen, northwestern China. Tectonophysics, 1998,287: 213～231
7 孙永传，李蕙生.碎屑岩沉积相和沉积环境.北京：地质出版社，1986.65～88
8 波特P E，裴蒂庄F J著,陈发景，李明诚等译，李濂清校.古流和盆地分析.北京：科学出版社，1984.310～313
9 Mutti E. and Ricci\|Lucchi F. Turbidite of the northern Apennines: Introduction to facies analysis (English translation by Nilson T H, 1978). International Geology Review, 1972,20(2):125～166
10 Pickering K, Stow D, Watson M and Hiscott R. Deep\|water facies, processes and models: A review and classification scheme for modern and ancient sediments. Earth Science Review, 1986, 23: 75～174
11 何镜宇，孟祥化.沉积环境和沉积相模式及建造.北京：地质出版社，1987.316～317
12 Walker R G. Turbidite sedimentary structures and their relationship to proximal and distal depositional environments. Jour. Sedim. Petrol, 1967,37:25～43
13 Walker R G. Facies Models. Geoscience Canada, 1979.211
14 Bhatia M R. Plate tectonics and geochemical composition of sandstone. The Journal of Geology, 1983, 91(6): 611～627
15 Bhatia M R. Rare earth element geochemistry of Australian paleozoic graywackes and mudrocks: Provenance and tectonic control. Sedimentary Geology, 1985, 45:97～113
16 Roser B P, Korsch R J. Determination of tectonic setting of sandstone\|mudstone suites using SiO\-2 content and K\-2O/Na\-2O ratio. Journal of Geology, 1986, 94: 635～650
