Zircon U–Pb geochronology and Hf isotopic constraints on the petrogenesis of Early Triassic granites in the Wulonggou area of the Eastern Kunlun Orogen, Northwest China

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

“…From the Permian to Middle Triassic, abundant granitoids (280 Ma-250 Ma) intruded during this period and were associated with the Paleo-Tethys oceanic basin subducting northward (Deng et al, 2014b;Huang et al, 2014;Li et al, 2001Li et al, , 2013aLi et al, ,2013bMo et al, 2007;QRGST, 1981;Xiong et al, 2013;Yang et al, 1996). The granitoids of Middle Triassic to Early Jurassic indicated the closure of the Paleo-Tethys Ocean and the Eastern Kunlun area entered the intracontinental orogenic stage (Deng et al, 2015b;Guo et al, 1998;Kui et al, 2010;Li et al, 2015c;Mo et al, 2007;Li et al, 2015d;Ding et al, 2015;Hu et al, 2015;Wang et al, 2016). A great number of skarn-type and porphyry-related poly-metallic deposits are temporally and spatially related to Middle to Late Triassic granitic intrusions (235-219 Ma) ( Fig.…”

Zircon U–Pb geochronology, Hf isotopes, and whole‐rock geochemistry of Hongshuihe Early to Middle Triassic quartz diorites and granites in the Eastern Kunlun Orogen, NW China: Implication for petrogenesis and geodynamics

“…The resulting melt is then cooled and dissolved in 100 ml of 4% nitric acid and analysed using ICP‐MS. Chondrite‐normalized rare earth plots are provided with the results to aid in data interpretation using the detailed operating conditions and procedures described by Ding et al ().…”

“…EKO: Eastern Kunlun Orogen; QDM: Qaidam Block; TRM: Tarim Basin; NKL: North Kunlun Belt; MKL: Middle Kunlun Belt; SKL: South Kunlun Belt; BH‐SG: Bayan Har‐Songpanganzi Terrane; ATF: Altyn Tagh Fault; N.KLF: North Kunlun Fault (South Qimantag Fault); M.KLF: Middle Kunlun Fault; S.KLF‐AMF: South Kunlun‐Aryan Maqin Fault. Age of granitic intrusions: (1) Golmud East granodiorite, 240 Ma (Harris et al, ); (2) 250 Ma (Chen et al, ); (3) Balugou granite, 244 Ma (Ding et al, ); (4) Naomuhun granodiorite, 261 Ma (Xiong et al, ); (5) South Dulan granodiorite, 250 Ma (Huang et al, ); (6) Yuegelu granodiorite, 242 Ma (Liu et al, ); (7) 253 Ma (Chen et al, ); (8) Wulonggou granodiorite, 248 Ma; Xiaoyakou granite, 246 Ma (Ding et al, ). The extent of Figure is also shown [Colour figure can be viewed at wileyonlinelibrary.com]…”

“…Among them, the Late Palaeozoic to Early Mesozoic granites constitute the main body of the magmatic belt of the MKL (Jiang et al, ; Jiang, Wang, & Li, ; Luo, Deng, Cao, Guo, & Mo, ; Mo et al, ; Xu et al, ). Recent research has focused on the Late Permian to Early Triassic granite of different regions in MKL (Chen, Yin, George, Li, & Jiang, ; Ding et al, ; Ding, Liu, & Yan, ; Harris et al, ; Huang et al, ; Xiong, Ma, Zhang, & Liu, ) and made progress on constraining the formation age of the intrusions, but also on speculating on the tectonic evolution in EKO.…”

“…However, granitic rocks are of great significance for studying the growth and evolution of the continental crust (Deng et al, ; Li, Zhu, Hou, & Xie, ; Liu et al, ; Mo et al, ; Xie et al, ; Xie, Mao, Li, & Bierlein, ; Xie, Mao, & Zhao, ). For example, Ding et al (; ) presented precise LA‐ICP‐MS zircon U–Pb ages as well as major and trace element and Sr–Nd–Hf isotopic data for two Triassic granites and diorite dikes in the Wulonggou mining area and constrained the ages of the magmatism and related mineralization as well as their petrogenesis and tectonic significance. In the Hongshuihe area, the quartz diorites and granites previously described as Hercynian Hongshuihe granitic rocks (TIGQS, ) were actually emplaced in the Triassic according to our survey, and this stage of granite was closely related to skarn‐type Cu–Pb–Zn mineralization in the area.…”