封面故事

Cover Story

辽宁锦州古生物化石和花岗岩国家地质公园遥感影像图。阜新—义县盆地早白垩世热河生物群演化与医巫闾山的形成具有时空耦合关系。看似迥然不同的地貌景观,同属于医巫闾山NNE向大型韧性剪切带主拆离断层的上、下盘。随着主拆离断层的活动,下盘医巫闾山隆升,上盘阜新—义县盆地沉降。伴随着盆地发育,热河生物群形成并繁盛,进而随着主拆离断层停止活动,热河生物群亦消亡。该成果为整合地质遗迹资源、整体规划地质公园旅游品牌,提供了科学支撑。

The remote sensing image map of the Jinzhou Fossil and Granite National Geopark.The Fuxin–Yixian Basin where the Jehol Biota exists is spatiotemporally related to the formation of the YiwulüMountain in the Cretaceous.Although they show different geomorphologic landscapes,the Fuxin–Yixian Basin and the YiwulüMountain belong to the footwall and hanging wall of the main detachment fault of the YiwulüMountain large ductile shear zone,respectively.Owing to the main detachment fault activities,the footwall(Yiwulü Mountain)was subsided;on the contrary,the hanging wall(Fuxin–Yixian Basin)rose.With the development of the basin,the Jehol Biota appeared and flourished.However,the biota died out when the main detachment fault activity ceased.