Contributions of juvenile lower crust and mantle components to porphyry Cu deposits in an intracontinental setting: evidence from late Mesozoic porphyry Cu deposits in the South Qinling Orogenic Belt, Central China - Lei Chen; Zhen Yan; Zongqi Wang; Xianqing Guo; Changlei Fu; Zhijie Zeng (Mineralium Deposita, 2023)