Figure 3

Location and tectonic map of the Songliao Basin.

(a): Basic topographic map of Songliao Basin, separated from Siberia by the Mongol–Okhotsk suture zone and bounded by the Yinshan–Yanshan belt on the south and by the Daxing'anling belt on the east (B = basin; F = fault). The closed dotted white lines indicate Mesozoic–Cenozoic basins. YGB = Yinggen Basin; OB = Ordos Basin; EB = Erlian Basin; TB = Tamsag Basin; BHB = Bohai Basin; HB = Hailar basin; GB = Genhe Basin; MWB = Mohe Baisn; SLB = Songliao Basin; SW-JYB = Sunwu-Jiaying Basin; HLB = Hulin Basin; SJB = Sanjiang Basin; BLB = Boli Basin; DMF = Dunhua–Mishan Fault; MF = Mudanjiang Fault; DF = Derbugan Fault; YYF = Yilan–Yitong Fault; NKF = Nenjiang–Kailu Fault; TLF = Tanlu Fault. (Modified after Wang et al., 2013b (Ref. 29). (b), The drifting history of the Izanagi/Kula Plate since 90 Ma (modified after Yang, 2013 and Norton, 2007). SLB = Songliao Basin; SYB = Subei-Yellow Sea Basin. CNF = Changle-Nanao Fault; CSAF = Central Sikhote-Alin Fault; LF = Lishui Fault; TLF = Tanlu Fault. The Okhotomorsk Block moved northward along the East Asian margin, due to the change from N35°W to N15°W in Izanagi motion direction. The northeastward oblique motion of the Okhotomorsk Block along the transform zone at the Asian margin resulted in a sinistral strike-slip fault system of several tens of kilometers wide in North China (Ref. 22).