首页|Depositional Responses to the Mongol-Okhotsk Ocean Closure in the Central Area of the Great Xing'an Range: Insights into Thrust Faults and Foreland Basins
Depositional Responses to the Mongol-Okhotsk Ocean Closure in the Central Area of the Great Xing'an Range: Insights into Thrust Faults and Foreland Basins
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The Mongol-Okhotsk Ocean, which has been closing gradually from the west to the east beginning since the Late Paleozoic, was an important part of the Central Asian Orogenic Belt. It influ-enced the tectonic framework of Northeast Asia in the Mesozoic, especially the Late Mesozoic arc-basin system that is widely distributed in the Great Xing'an Range. However, the manner in which the Mon-gol-Okhotsk Ocean affected the sedimentary basin development remains poorly understood. To ad-dress this issue, we conducted U-Pb dating of detrital zircon deposited sedimentary basins of the cen-tral Great Xing'an Range. By examining the possible provenances of the detrital zircon and the struc-tural controls of the basins, we found that a key sedimentary unit was deposited around Late Jurassic-Early Cretaceous. Its provenance was a felsic source in a back-arc setting of an active continental mar-gin. The findings also suggest the existence of a unified geodynamic setting that affected the coeval de-velopment of basins in the northern Great Xing'an Range and the Yanshan fold-thrust belt along the northern margin of North China Craton. This research helps to better understand the complex tectonic processes which shaped the Northeast Asia during the Late Mesozoic.
NETL
NSTL
万方数据
