Cu isotopes reveal initial Cu enrichment in sources of giant porphyry deposits in a collisional setting Zheng, Yuan-Chuan ; Liu, Sheng-Ao ; Wu, Chang-Da ; Griffin, William L. ; Li, Zhen-Qing ; Xu, Bo ; Yang, Zhi-Ming ; Hou, Zeng-Qian ; O'Reilly, Suzanne Y. Abstract Publication: Geology Pub Date: February 2019 DOI: 10.1130/G45362.1 Bibcode: 2019Geo....47..135Z