1.Objectives Changshan Islands are located on the geographical boundary between the Bohai Sea and the North Yellow Sea,China.Intensively tectonic deformation developed in this area,which is an important connection poi...1.Objectives Changshan Islands are located on the geographical boundary between the Bohai Sea and the North Yellow Sea,China.Intensively tectonic deformation developed in this area,which is an important connection point to study the tectonics of the Shandong Peninsula and Liaoning Peninsula.Previous studies have shown that the lithologies of the three northern islands(Beihuangcheng Island,Nanhuangcheng Island,and Xiaoqin Island)of the Changshan Islands include Neoproterozoic quartzite,phyllite,and slate(Fuzikuang Formation of the Penglai Group),and a few areas are covered by Quaternary slope deposits,marine deposits and loess(Fig.1 a;Qiao EW et al.,2019).Recently,a set of volcanic rocks was firstly discovered in Nanhuangcheng Island(Fig.1 a).展开更多
基金financially supported by the project of the China Geological Survey(DD20190208)。
文摘1.Objectives Changshan Islands are located on the geographical boundary between the Bohai Sea and the North Yellow Sea,China.Intensively tectonic deformation developed in this area,which is an important connection point to study the tectonics of the Shandong Peninsula and Liaoning Peninsula.Previous studies have shown that the lithologies of the three northern islands(Beihuangcheng Island,Nanhuangcheng Island,and Xiaoqin Island)of the Changshan Islands include Neoproterozoic quartzite,phyllite,and slate(Fuzikuang Formation of the Penglai Group),and a few areas are covered by Quaternary slope deposits,marine deposits and loess(Fig.1 a;Qiao EW et al.,2019).Recently,a set of volcanic rocks was firstly discovered in Nanhuangcheng Island(Fig.1 a).
