Analysis of main controlling factors for hydrocarbon accumulation in central rift zones of the Hailar-Tamtsag Basin using a fault-caprock dual control mode

Depositional model and evolution for a deep-water sublacustrine fan system from the syn-rift Lower Cretaceous Nantun Formation of the Tanan Depression (Tamtsag Basin, Mongolia)

“…The Tanan Depression is composed of seven structural units: the eastern fault scarp slope, the eastern half-graben, the central uplifted high, the central half-graben, the western step-fault, the western half-graben, and the western dip slope (Figs. 1b and 2) Yan et al, 2013;Fu et al, 2013;Zhou et al, 2014).…”

“…EFSS ¼ eastern fault scarp slope, EH-G ¼ eastern half-graben, CUH ¼ central uplifted high, CH-G ¼ central half-graben, WS-F ¼ western step-fault, WH-G ¼ western half-graben, WDS ¼ western dip slope; BBF ¼ basin-bounding fault, CF ¼ central fault. Traynor and Sladen, 1995;Sladen, 1997;Graham et al, 2001;Meng et al, 2003;Chen et al, 2007;Zhang et al, 2012;Fu et al, 2013). The Basin is located east of the Ergun Fold Zone of the Siberia Plate and west of the Khingan Fold Zone (Fig.…”

“…The Tanan Depression is an important hydrocarbon-bearing area in the Tamtsag Basin (Fu et al, 2013;Zhou et al, 2014). In recent years, Daqing Oilfield Ltd. Company of China has carried out petroleum explorations in several locations.…”

“…In recent years, Daqing Oilfield Ltd. Company of China has carried out petroleum explorations in several locations. Current knowledge indicates that clastic sediments of the Nantun Formation contain both excellent source rocks and good reservoir rocks for oil (Miao et al, 2011Huang et al, 2012;Fu et al, 2013).…”

Decoding stratigraphic evolution of the Hailar Basin: Implications for the late Mesozoic tectonics of NE China

“…It is bounded by the Xing'an Terrane on the east, the Hulun Lake on the west, the Hailar River on the north, and the Mongol–Okhotsk suture zone on the north, respectively (Meng, Hu, Jin, Zhang, & Xu, ). The NCMT can be divided into the Erguna, Xing'an, and Songnen terranes from northwest to southeast (Fu, Chen, Yan, Yang, & Sun, ; Liu, Zhao, Luo, & Long, ; Meng et al, ; Sun et al, ), with the Deerbugan and Nenjiang faults in between. The Hailar Basin straddles the Xing'an and Erguna terranes that were amalgamated at the end of the Early Permian (Heumann, Johnson, & Webb, ; Li, ; Figure ).…”