Early Paleozoic Extension-Compression Transition and Formation of a Paleo-Oil Reservoir System in the NW Sichuan Basin: Implications for Deeply Buried Hydrocarbon Accumulation

Figure 10

(a) The NSWSCD has experienced three stages (eight periods) of tectonic movements since the Late Triassic. (b) The structural map (Middle Permian top) showing that the NSWSCD has developed a series of subsurface structures (HWC S, SYS-SJH S, and JLS S). (c) NW-SE section shows that the No. 1 fault has divided the NSWSCD into the frontal and deformation zone, and the Jiange-Zitong depression, which has different structural histories after the Late Triassic.