HUANAN ALPS, NOT SOUTH CHINA PLATFORM

• 作 者: 许靖华 孙枢 李继亮
• 机 构: Geological Institute, Swiss Federal Institute of Technology, 8006 Zurich, Switzerland rrrrrrr
• 出 处: Science in China,Ser.B
• 发表日期: 1988年01期
• 关键词: Yangtze basement Paleo southeastern Mesozoic orogenic suture carbonate granite y

The notion that South China was a post-Caledonian platform is clearly proven incorrect by the ev-idence of Mesozoic deformation and igneous activities. Reinterpretation of map patterns suggested the pres-ence of Mesozoic orogenic belt comparable to Southern Appalachians in dimension and in style of de-formation. Field work in 1985 led to the discovery of possible flysch and rigid basement nappes, whichhave been thrust onto carbonate platform. A suture zone has been identified. The Huanan Alps owed itsorigin to Indosinian Orogeny, which eliminated a Paleo Tethyan Seaway, the Xiangganzhe (Hunan-Ji-angxi-Zhejiang) Ocean between the Yangtze and Huanan Terranes.

The notion that South China was a post-Caledonian platform is clearly proven incorrect by the ev-idence of Mesozoic deformation and igneous activities. Reinterpretation of map patterns suggested the pres-ence of Mesozoic orogenic belt comparable to Southern Appalachians in dimension and in style de-formation. Field work in 1985 led to the discovery of possible flysch and rigid basement nappes, which have been thrust onto carbonate platform. A suture zone has been identified. The Huanan Alps owed itsorigin to Indosinian Orogeny, which eliminated a Paleo Tethyan Seaway, the Xiangganzhe (Hunan-Ji-angxi-Zhejiang) Ocean between the Yangtze and Huanan Terranes.