Investigation of remote sensing geology shows that rhombic anastomosing structure is developed and Cuona, Dongcuo, Pengcuo, Ba Mucuo are distributed in xi-type structured system en echelon in Bange area of Tibet. They should be extensional fault basins formed under the same stress field and exposed to later right lateral shear.Large magmatic body intruded in central dome of Dong Kacuo-Dong Cuo lozenge rhombic block suggesting that under the dome occur a mantle plume. From north to south are exposed intermitently Dongqiao ophiolite, Dongcuo-Pengcuo ophiolite belt, Baila-Jueweng ophiolite and the ophiolite occur in belt.