Sequence Stratigraphic Research of the Jurassic in the East of Tarim Basin, Northwest China

Based on the study of drilling, well logging and seismic profile, the Jurassic strata of the study area can be divided in to 2 2nd-order and 4 3rd-order sequences. The same formation in different regions unevenly distributed in study area due to sedimentary environment, sedimentary palaeotopography, post-depositional uplift and different degree of erosion. 4 3rd-order sequence boundaries can be recognized in this study, the results shown that the sequence boundaries used to be on the abrupt change point of the logging curve and are characterized by the bottom of large size braided channel scouring.