Global Geology     2017 20 (1):  32-39    ISSN: 1673-9736:  CN: 22-1371/P Zircon U-Pb geochronology and geochemistry of Early Cretaceous granodiorite porphyries in Hutouya, western Shandong and their implications for petrogenesis YANG Haotian, SHI Jiangpeng, YANG Debin College of Earth Sciences, Jilin University, Changchun 130061, China Received 2016-11-16  Revised 2017-01-10  Online 2017-03-25 Reference   Corresponding author: YANG Debin