• 责任者：Zhang Yue (Xi’an Institute of Geology and Mineral Resources ; China Geological Survey ; Xi’an 710054 ; China) ; Xu Xueyi
• 刊名：Geological Bulletin of China
• 出版年：2012
• 卷期：31（6）
• 关键词：蛇绿岩 ; ophiolite ; 角闪岩 ; amphibolites ; 新疆 ; Xinjiang
• 页码：p.834-842
• 图表：6 illus., 2 tables, 40 refs.
• 分类号：0802
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

A series of metabasic volcanic rocks are exposed in the west of Fuyun County, Xinjiang. They are composed mostly of plagioclase amphibolite and occurred in the lenticular form in Fuyun Rock Group. Geochemical studies indicate that these metabasic volcanic rocks have characteristics of N-type MORB (mid-ocean ridge basalt). LA-ICP-MS zircon U-Pb dating analysis was performed for metabasic volcanic rocks in the west of Fuyun County, the results show that the formation age of the plagioclase amphibolite is (437±12) Ma, suggesting Early Silurian. The study of Mayinebo ophiolite provides new supplementary information for the investigation of Zayson-Ertix ophiolic tectonic rock zone and its geological evolution history.