Metallogenic conditions and prospecting potential of orogenic gold deposits in the central western part of Bangong Lake-Nujiang metallogenic zone

In the light of the metallogenic geological conditions and exploration potential, the present paper focuses on geological conditions, ore-controlling factors, isotopic signatures and mineralization age of the Dacha and Shangxu orogenic-type gold deposits in the central-western part of the Bangong-Nujiang metallogenic zone, Xizang. The potential areas favourable for the formation of large-sized orogenic-type gold deposits are restricted to the mélanges of the Muggar Kangri Group, hinge points and magmatic composite zones formed during the early collisional stages. Finally, five exploration prospects are delineated, including northern Nyima-Shangxu, northern Dongco-Dacha, northern Oma in Gerze, northern Xiabuco and northern Renaco in the Bangong-Nujiang metallogenic zone, Xizang.