Volcanic Rocks and Structures in Aqishan Area of
详细信息
- 责任者：Li Yanlin (Hanzhong Geological Team ; Shaanxi Bureau of Geology and Mineral Resources ; Hanzhong 723000 ; China) ; Yang Zhijun
- 刊名：Geology of Shaanxi
- 出版年：2010
- 卷期：28(1)
- 关键词：火山岩 ; volcanic rocks ; 新疆 ; Xinjiang
- 页码：p.46-51
- 图表：4 illus., 3 tables
- 分类号：0801
- issnNo：ISSN1001-6996
- isbnNo：CN61-1150/P
摘要
It has been a long-term argument question that the plates merge of the East Tianshan—orogenetic movements occurred in the end of the Devonian-Early Carboniferous Epoch,or the Late Carboniferous Epoch or the Early Permian Epoch.Recent researches of early-middle Carboniferous moderate-acid volcanic rocks,volcanic rhythms and lithochemistry at the south of the East Tianshan orogenetic zone,which were undertaken during the geological mapping at a scale of 1∶50.000 in Aqishan area of Shanshan County in Xinjiang,suggested that the set of volcanic rocks to be attributed in typical assemblage of island-arc volcanic rocks,indicating that the period of the Early-Middle Carboniferous Epoch should be the significant age for the emerges of the Tianshan oceanic basins.