Geochronological and geochemical constraints on the
Geochronological and geochemical constraints on the origin of Yaguila Cretaceous and Palaeogene orebearing quartz porphyries, Central Lhasa Terrane, Tibet YiMing Gao MLR Key Laboratory of Metallogeny and Mineral Resources Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China