Middle Jurassic intracontinental evolution of East Asia: Insights from the Tianshifu-Dongyingfang basin of the Liaodong Peninsula, NE China

Abstract The Middle Jurassic intracontinental shortening event in East Asia, known as episode A of the Yanshanian Movement eastern North China Craton and first phase Daebo Orogeny Korean Peninsula, respectively, has been thoroughly studied during past two decades. However, timing its beginning, duration, deformational processes are still highly controversial because few studies have probed correlations between Orogeny. Tianshifu-Dongyingfang basin, located northern Liaodong is filled with complete sequences that can be compared those to west Tan-Lu fault zone Peninsula. Regional stratigraphic suggest basin contains not only syntectonic conglomerates, but also lower upper unconformities A1 A2 Movement, which separated conglomerates from underlying Early–Middle coal measures overlying Late red beds, respectively. Detailed field survey structural analysis show development were controlled by imbricate thrust system basement, resulted WNW–ESE compression inversed fault-slip data. youngest detrital zircon U-Pb ages obtained near Peninsula initiated at ca. 171 Ma ended least 163 Ma. Our new geochronological data, combined data neighboring areas, belong a single event, compressional deformation was derived westward, lowangle subduction Paleo-Pacific plate transmitted Peninsulas 172–170 170–165