Characteristics of Ying Shan formation Carbonate Sequence Stratigraphy in middle of the Tarim Basin

The Ying Shan formation carbonate systems is identified 11 kinds of sequence boundary characteristics, generalized3 genetic types of sequence boundary and divided into 5 third-order sequence(Sq1-Sq5) to establish sequence stratigraphic framework in Ying Shan formation, Tarim Basin by the integrated analysis of many seismic lines, drilling cores and well logging data. Yi Jianfang formation is included Sq5 which was widely corroded with the top of Ying Shan formation in Ta Zhong area. 3 kinds of sedimentary systems tract style, including "HST+TSTorHST" and "LST+TST+HST" from different tectonopalaeo geographic backgrounds are inducted. The former is more common than the latter in which LST is composed by graded bedding grain limestone with debris flow.