华南地质与矿产2011，Vol.27Issue(4)：307-313,7.
湖南城步地区1：5万区调主要成果与进展
New Progresses in 1：50 000 Regional Geological Survey in Chengbu Area, Hunan Province
摘要
Abstract
Stratigraphic framework, tectonic framework and magmatic evolutionary series have been established in 1：50 000 regional geological survey in Chengbu, southwestern Hunan province. The deposition of Huangshidong Formation of Qingbaikouan System is at 828＋ 10 Ma which is yielded by zircon SHRIMP U-Pb dating. According to the contact relationship, rock characteristics and the isotope ages new-acquired, we subdivided the granite-bodies in Chengbu area into 12 intrusive periods, 31 intrusive masses, and merged into four magmatic evolutionary series： Qingbaikou Period, Silurian Period, Late Triassic Period and Jurassic Peri- od. The new discovery of gneissose granite of Qingbaikou Period greatly improved the study of magmatic rocks in this area. Structural feature of Chengbu-Jiangkou rupture fault is investigated and the integrated tectonic deformation succession of Chengbu area is rebuilt, so as geological history. 15 ore occurrences （including Pingtan medium-size scheelite deposit） are discovered by stream sediments analysis and mineralized abnormalities check, the newly discovery would provide exploration target for the next step prospecting work.关键词
地层格架/构造格架/岩浆演化序列/平滩钨矿/区域地质调查/湖南城步Key words
stratigraphic framework/tectonic framework/magmatic evolutionary series/Pingtan scheelite deposit/regional geological survey/Chengbu, southwestern Hunan province分类
天文与地球科学引用本文复制引用
刘伟,刘耀荣,张晓阳,陈必河,倪艳军,钟响,贺春平..湖南城步地区1：5万区调主要成果与进展[J].华南地质与矿产,2011,27(4):307-313,7.基金项目
中国地质调查局国士资源大凋查项目（编揭：1212010610711）.本文是集体劳动的成果,对参加野外地质矿产调查工作的所有技术人员表示衷心感谢.并以此文纪念自始至终在项目组奋斗三年的戴方元同志. （）
