Geochemical Characteristics and Tectonic Environment of the Wulang Formationvolcanic Rocks in the Awulale Areaof Western Tianshan
详细信息
- 责任者：Li Hong (No.9 ; Geological Party ; BGMERD of Xinjiang ; Urumqi 830009 ; China) ; Zhou Jibing
- 刊名：Xinjiang Geology
- 出版年：2011
- 卷期：29(4)
- 关键词：火山岩 ; volcanic rocks ; 天山 ; Tianshan Mountains
- 页码：p.381-384
- 图表：7 illus., 1 table, 12 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
The Lower Permian Wulang formation from the Awulale in western Tianshan is mainly composed of mafc and felsic volcanic rocks, forming a bimodal volcanic series. Tectonic analysis indicates that the Wulang formation was formed in a post-collisional intracontinental rift. Large amounts of volcanics and volcaniclastic rocks in the Wulang Formation suggest that crustal movement is so frequently in early Middle Permian that some areas suffer crustal strenching and form synsedimentary faults. So the rift basin is subjected to the whole process of formation, development and extinction.