As a last step of formation of the Pangea supercontinent,the North China block collided with the South China block during Permo-Triassic time forming the Qinling-Dabie- Sulu collision belt which was identified by the finding of ultrahigh- and high-P/T eclogites along the belt.After the Qinling-Dabie-Sulu collision belt was found,the continuation of the collision belt into Korean Peninsula became a hot issue.Although the Imjingang belt in Korean Peninsula was suggested as an extension of the belt,evidences of collision belt such as eclogite and ophiolite,were not found from the belt.