摘要
Anti E-W strictures proofs include as followings:coal preservation in southern and northern margin of Yining Sag,southern margin of western Middle Uplift,two sides of Awulale Mountain,isoline distribution of aeromagnetic anomaly in polymetallic deposit-accumulated area of Awulale Mountain and reflection characters on seismic profiles in Gongliu-Xinyuan Sag.All of the integrated geological factors above direct the distribution of E-W segments and N-S zones that are likely to belong to the features of pre-Jurassic anti E-W structures.Those anti E-W structures control coal accumulation extending N-S trending during Jurassic period(i.e.,Early Yanshan).During Late Yanshan,lateral compression(clockwise and anticlockwise) acted by Jungar and Tarim platforms make those anti E-W structures within Yili Basin escape westwards and express stress state of eastern extension and western compression.S-N trending compression during Himalayan period makes Late Yanshan structures(uplift and depression) superposed as E-W segments,composed of delta Yili Basin on the E-W tectonic setting.Current remnant synclines of pre Jurassic anti E-W structures are the favored positions over eroded area near Awulale Mountain.