S-wave velocity characteristics and mineralization of the southern tibet detachment system-yalaxiangbo dome

A series of extensional structures, including the southern Tibet detachment system (STDS), north-south trending rifts (NSTR), and northern Himalayan gneiss dome (NHGD), developed from collision compression between Indian Eurasian plates. These tectonic movements were accompanied by magmatism polymetallic mineralization. Cuona Rift (CR) is located on STDS next to Yalaxiangbo Dome (YD) passes through Zhegucuo-longzi fault (ZLF), Lhozhag (LZF), Rongbu-Gudui (RGF), Cuonadong (CD), YD. The study area contains numerous metal deposits, such as rare ore, lead zinc gold two geothermal fields, i.e., field (CGF) Gudui (GGF). Current research geological structures YD mainly based magnetotelluric natural seismic imaging. surveys have a low resolution, making it impossible image shallow crust in detail. This obtained about 112 km S-wave velocity profile using multichannel surface wave imaging method. results indicated that average thickness sedimentary layer 400–500 m, while more than 800 m at certain zones. CD connected high-velocity body below Zhaxikang ore concentration (ZOCA) may same provenance. thermal conductivity reveals CGF, GGF, ZOCA high values intense radiation capacity. drives migration circulation fluids CGF causing them continuously transmit heat along system. extracts useful elements bodies which flows. When these mix with atmospheric infiltration water, precipitates form hydrothermal superimposed transformation type lead-zinc deposit.