The Basu massif, located east of the Amdo terrane in the Dingqing-Nujiang area, is approximately 200 km long and up to 50 km wide and largely composed of metasedimentary rocks and granitic gneiss that is surrounded by Late Triassic-Early Jurassic ophiolitic melange.
The Basu massif is approximately 200 km long and up to 50 km wide and largely composed of metasedimentary rocks. The Basu massif is approximately 200 km long and up to 50 km wide and largely composed of granitic gneiss. These granitic gneiss is surrounded by Late Triassic-Early Jurassic ophiolitic melange. The Basu massif is located east of the Amdo terrane in the Dingqing-Nujiang area.