Discovery and Its Tectonic Significance of the Proterozoic Miaowan Ophiolites in the Southern Huangling Anticline, Western Hubei Province, China

• 责任者：Peng Songbai (Faculty of Geosciences ; China University of Geosciences ; Wuhan 430074 ; China) ; Li Changnian
• 刊名：Geological Bulletin of China
• 出版年：2010
• 卷期：29(1)
• 关键词：蛇绿岩 ; ophiolite ; 湖北 ; Hubei Province
• 页码：p.8-20
• 图表：6 illus., 1 table, 51 refs.
• 分类号：0802
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

Studies of strongly deformed and metamorphosed mafic-ultramafic rocks from the Proterozoic Miaowan Formation in the high-grade metamorphic Kongling Group in the southern Huangling anticline show that the mafic rocks are composed of layered fine-grained amphibolites, metagabbro rockbodies and dykes and diabase dykes, while the ultramafic rocks are mainly composed of serpentinized dunite and harzburgite, cropping out as tectonite slices and blocks within amphibolites. All these features indicate that the mafic-ultramafic rocks from the Proterozoic Miaowan Formation within Kongling Group in the southern part of Huangling anticline, are a structurally dismembered ophiolite resting above an ophiolitic mélange, sitting on top of the Proterozoic shelf sequence on the Yangtze Craton.