Geochemistry of the Yuezhao-Pipa Qingbaikouji Volcanic Rocks and Tectonic Circumstances in Wudu District , Gansu
详细信息
- 责任者：Li Hongrui (No.3 Geology and Mineral Exploration Team ; Gansu Provincial Bureau of Geology and Mineral Exploration and Development ; Lanzhou 730050 ; China) ; Ma Tao
- 刊名：Gansu Geology
- 出版年：2011
- 卷期：20(3)
- 关键词：火山岩 ; volcanic rocks ; 岩石地球化学 ; lithogeochemistry ; 甘肃 ; Gansu Province
- 页码：p.18-22, 30
- 图表：3 illus., 3 tables, 8 refs.
- 分类号：0801
- 出版序号：1646
- issnNo：ISSN1004-4116
- isbnNo：CN 62-1191/P
摘要
The study on the Yuezhao-Pipa volcanic rocks in Wudu district of Gansu Province shows that the volcanic rocks formed in the tectonic setting of oceanic island in Qingbaikou Period. They were mainly basic- and acid-end member missing neutral-end member rocks, belonged to typical bimodal volcanic rocks and were not a part of Ophiolite. The determination of this set of bimodal volcanic rocks has an important significance to the tectonic evolution of the West Qinling orogenic belt.