Complex Structural Analysis and Modeling: the First Row of Anticlinal Belt on the Southern Margin of the Junggar Basin

The aim of complex structural analysis on foreland thrust belts, which is based on a rational interpreted seismic profile, is to determine the mechanisms, process, rate and timing of deformation. Several geometric techniques, such as separating dip domains and analyzing axial surfaces, are used in seismic interpretation and structural analysis of the first row of anticlinal belt in the southern Junggar Foreland Basin. The patterns of growth strata indicate that the first row of anticlinal belt was developed above the passive back thrust on the top of the deep structural wedge, which is imbricated by five Paleozoic—Mesozoic fault-bend folds, and the upper two anticlines may be potential targets in exploration. The most displacement on the deep flat-ramp-flat thrusts transfer southward along the back thrust, located in the coal layers of middle Jurassic, and only a few displacement transfer northward to the second row of anticlinal belt. So, the elevating or plunging between these two anticlinal belts indicates the displacement transfer on the direction of the south and north.