New zircon U-Pb geochronological and geochemical data reveals the earliest Cretaceous tectonic shift event in the Lanqi Basin, Inner Mongolia, northern China

作者：Zhen-tao Wang,Yong-sheng Zhang,Li-zhi Shi,Yuan Peng,Bao-ling Gui

摘要：1.Objective The Lanqi Basin about 790 km2 in size is located in the Zhenglan Banner area,to the south of the Erlian Basin,and it is not only the tectonic transition region between the North China Craton and the Xingmeng orogenic belt,but also the area between the Great Khingan Mountains volcanic belt and the northern Hebei-western Liaoning volcanic belt.Its key tectonic location involves the Paleo-Asian Ocean,the Mongol-Okhotsk suture zone and the transition of the Paleo-Pacific tectonic domain,which should be paid more attention to.What's more,the Lanqi Basin is controlled by two groups of faults in the NE and NW directions,respectively.Among them,the NW faults are mainly small in scale,while the NE faults are basement faults those are the main controlling fault for volcanic eruption.

发文机构：Ministry of Natural Resources Key Laboratory of Saline Lake Resources and Environments

关键词：TECTONICVOLCANICbelt

分类号： P31[天文地球—固体地球物理学]