• 责任者：Li Huiping (No.5 Team ; Northwest Branch ; China Metallurgy Geological Bureau ; Jiuquan 735000 ; China) ; Zou Zhiping
• 刊名：Northwestern Geology
• 出版年：2013
• 卷期：46(3)
• 关键词：火成岩 ; igneous rocks ; 侵入体 ; intrusions ; 甘肃 ; Gansu Province
• 页码：p.148-155
• 图表：7 illus., 7 tables, 30 refs.
• 分类号：0801
• issnNo：ISSN1009-6248
• isbnNo：CN61-1149/P

     With the application of X-ray diffraction and stable isotope, this paper concludes that Yeniutan granodiorite was formed at a temperature no more than 600~C and a depth about 4 kin- 5 km underground, which is near the bottom of earthrs upper crust. During the formation, the exchange between magmatic water and atmospheric precipitation is insufficient, and the oxygen fugacity is low. Inclusion composition indicates that the magmatic water is negative to the miner- alization. A variety of the dating data on Yeniutan granodiorite confirm that the rock mass was formed in late Ordovician. After the formation, the uplift of Yeniutan region is not so high, thus the denunciation of the nearby Tdergou tungsten deposit is not deep.