Variability and Main Controlling Factors of Hydrocarbon Migration and Accumulation in the Lower Paleozoic Carbonate Rocks of the Tazhong Uplift, the Tarim Basin, Northwest China

Figure 2

Horizontal segmentation and vertical stratification styles of the strike-slip fault zone. (a) According to the curvature attribute map of the carbonate there are linear, braided, diagonal, and ponytail segments in the fault plane. (b–e) Vertical profiles of strike-slip fault segments are as follows: (b) linear segment with an upright fault, demonstrating closed sections and small vertical fault displacement. (c) A braided segment that forms a “flower-like” bulge below the carbonate rock top and has a strongly fragmented fault zone; when further compressive or extensional faulting develops, the original fault still has capacity for hydrocarbon transport. (d) A diagonal segment which is a product of tensile and torsional stresses, with a highly fragmented fault zone and strong vertical transport capacity. (e) A horsetail segment, which is a product of tensile and torsional stress, with a high degree of fragmentation in the stress release area.