Advances in the Basic Geological Survey Along Dali-Ruili Section of Fanya Railway, Western Yunnan Province

详细信息   

• 责任者：Yin Fuguang (Chengdu Center ; China Geological Survey ; Chengdu 610081 ; China) ; Zhang Hu
• 刊名：Geological Bulletin of China
• 出版年：2012
• 卷期：31(2)
• 关键词：区域地质调查 ; regional geological survey ; 云南 ; Yunnan Province
• 页码：p.218-226
• 图表：6 illus., 8 refs.
• 分类号：1400
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

摘要

The Dali-Ruili railway is an important part of the south line of the Fanya railway. In order to solve the complex geological problems in railway building, China Geological Survey carried out 1：50000 regional geological mapping and environment hazard investigation from January 2008 to December 2010. Six working items were set up, which included twenty-two 1：50000 mapping items and one comprehensive research item. Important progresses were made in such basic geological aspects as structure, petrology, strata and paleontology through systematic regional geological survey. A number of high-precision age data were obtained. The Baoshan block is considered to be a part of the Gondwana continent. Luxi tectonic melange belt was discovered, which is thought to be a part of the Nujiang tectonic melange belt.