Intrusive function of Late Triassic intrusive rock's geochemistry character in Changdu-Simao Tectonic Zone

Late Triassic,the Changdu-Simao Tectonic Zone(CSTZ) growing typical rift valley.There was extensive rift type of magma action and have extensive magma rock(mostly is lava and intrusive rock) therefore we collect large numbers of data and discover that erupt rock and intrusive rock both have bimodal character through analyse the data which include the geochemistry character in this area.combine the other geologic information and indicate that it is not an extrusion environment from now on but is an extend environment follow the short-lived extrusion.this article expound the intrusive rock and the erupt rock will expound at other paper.