Journal of Geology & Geophysics
Open Access
ISSN: 2381-8719
ISSN: 2381-8719
Xinchuan Lu
Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics,
Chinese Academy of Sciences, Lanzhou 730000, Gansu Province
Indiana
Research Article
U-Pb Detrital Zircon Geochronology of Late Triassic to Early Jurassic Sandstones in the Northwestern Junggar Basin and its Implications
Author(s): Xinchuan Lu, Xiangyang Xie, Shuncun Zhang, Arthur B Busbey, Shengyin Zhang, Shekuan Du, Guoqiang Sun and Jian ShiXinchuan Lu, Xiangyang Xie, Shuncun Zhang, Arthur B Busbey, Shengyin Zhang, Shekuan Du, Guoqiang Sun and Jian Shi
The Junggar Basin is a Late Carboniferous foreland basin in northwestern China surrounded by different mountain belts. The west Junggar Basin has a complicated tectonic history with multiple subduction and collision events that controlled sedimentation and basin development. In this study, absolute dating of igneous rocks, rock geochemistry, and U-Pb detrital zircon geochronology were used to document the provenance of the Triassic-Jurassic clastic rocks in the northwest margin of Junggar Basin and determine local sources and tectonic setting. Granitic zircons with the youngest concordia age reveal the north Karamay pluton was formed at 292.6 ± 0.7 Ma, suggesting that they are postcollision granites. Late Triassic-Lower Early Jurassic strata were derived from Zhayier Mountain south of the Darbute fault. Starting with the Upper Early Jurassic Sangonghe Formation-Lower Middle Jur.. View More»
DOI:
10.4172/2381-8719.1000320