The intermediate-mafic intrusive rocks from Kawabulak area in Central Tianshan are composed of quartz diorite, anorthosite and olivine gabbro. LA-ICP-MS zircon dating shows that the quartz diorite and anorthosite formed at 412.2±3.2 Ma and 297.1±3.1 Ma, respectively. εHf（t）values of quartz diorite vary between +0.3～+15.4 with corresponding TDM2 ages of 1 381～427 Ma, while εHf（t）values of anorthosite change between +6.4～+11.3 with corresponding TDM2 ages of 678～498 Ma. Geochemical data show that, intermediate-mafic rocks enriched in light rare earth elements（LREEs）and large ion lithophile elements（LILEs）, depleted in high field strength elements（HFSEs）. On the base of field investigation, petrographical and geochemical analysis, integrated with regional data, we propose that quartz diorite was formed by magma mixing process in an active continental margin environment in which the South Tianshan Ocean subducted northward beneath the Central Tianshan. Anorthosite and olivine gabbro were formed in an extensional setting, parent magma of which originated from a juvenile lithospheric mantle that was previously metasomatized by subduction zone fluids/melts. The inherited zircons from olivine gabbro indicate that central Tianshan experienced multiphase tectonic thermal events, whether the oldest group（2 767～2 663 Ma）of which can represent the Central Tianshan Archean basement remains to be further study.
Nijiati Abuduxun Xu Zhijun Gong Xiangkuan Muzhapaer Muhetaer Xie Zihang. Geochronological, petrogenesis and tectonic implications of the Earlier Devonian-Late Carboniferous intermediate-mafic intrusive rocks in Kawabulak area, Central Tianshan Mountains[J]. Chinese Journal of Geology, 2019, 54(4): 1308-1329.