Geochemical Characteristics and Its Structural Significance of Early Carboniferous Volcanic Rock in Yiwu Area, Eastern Tianshan Mountains
详细信息
- 责任者：Qiao Wenlang (Guizhou Academy of Geologic Survey ; Guiyang 550005 ; China) ; Liu Linyun
- 刊名：Guizhou Geology
- 出版年：2011
- 卷期：28(1)
- 关键词：火山岩 ; volcanic rocks ; 岩石地球化学 ; lithogeochemistry ; 天山 ; Tianshan Mountains
- 页码：p.35-41
- 图表：11 illus., 4 tables, 10 refs.
- 分类号：0801
- 出版序号：20120151
- issnNo：ISSN1000-5943
- isbnNo：CN52-1059/P
摘要
By investigating the Early Carboniferous volcanic rock distribution, causation and structural environment relation in Mayidang area, it shows the distribution character of volcanic lithofacies from secondary volcanic facies-explosive phase-effusive facies to volcanic sedimentary facies in this period, the volcanic associations mainly is a series of island arc facies intermediate-intermediate acidic volcanic clastic rock. According to the rock and fossil characters of Tuosibasitao Formation, it’s known that Early Carboniferous in the target area is in the dynamics environment of continental rift transfer into oceanic rift. In the middle and late period of Early Carboniferous, the tectonic movement in the target area, transferred from stretching mechanism into squeezing mechanism, it’s belong to island arc volcanic rock.