Double side deep crust scale subduction toward the south and north: Indicating the polarity of the subduction of the ancient Asian ocean, Evidence from large dynamite shots of the deep seismic reflection profile

Xiaomiao Tan1, Haiyan Wang2, Rui Gao1,2, Hesheng Hou3 and Hongqiang Li4, (1)Sun Yat-Sen University, School of Earth Sciences and Engineering, Guangzhou, China, (2)Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China, (3)Chinese Academy of Geological Sciences, Beijing, China, (4)Chinese Academy of Geological Sciences, SinoProbe Center, Beijing, China