• 责任者：Pan Mingchen (Liaoning Institute of Geological Survey ; Dalian 116100 ; China) ; Yu Haifeng
• 刊名：Geology and Resources
• 出版年：2011
• 卷期：20(3)
• 关键词：火山岩 ; volcanic rocks ; 构造环境 ; tectonic setting ; 新疆 ; Xinjiang
• 页码：p.226-230
• 图表：6 illus., 4 tables, 5 refs.
• 分类号：0801
• 出版序号：207
• issnNo：ISSN1671-1947
• isbnNo：CN21-1458/P

The volcanic rocks of Wulang Formation are scattered in the Late Paleozoic Alataw continental marginal basin near the contact between Ili micro-plate and Junggar micro-plate of the Kazakhstan-Junggar plate. The volcanic activities are relatively weak, with basic, intermediate and acid magma. The tectonic environment of the tephrite in the area is intraplate; while that of the andesite and rhyolite is intracontinental collision orogenic belt. The alkalinity of the tephrite of Wulang Formation is strong. The andesite, rhyolite and rhyolite porphyry are sub-alkaline. The Rb-Sr isotopic age of the intermediate andesite is (282.5 ± 2.6) Ma, in Early Permian. It can be inferred that, in Alataw area, the Ili micro-plate and Junggar micro-plate have been sutured since Early Permian, forming intracontinental fault basin, with the development of continental volcanic-clastic rock formation.