华南地质与矿产2011,Vol.27Issue(4):335-341,7.
海南吊罗山一带1:5万区调主要成果与进展
New Progresses in 1:50 000 Regional Geological Survey of Diaoluoshan Area, Southeastern Hainan Island
摘要
Abstract
During 1:50 000 regional survey in Diaoluoshan area, Lingshui County, southeastern Hainan province, we subdivided the regional stratigraphic system into five lithostratigraphic units (include one informal lithostratigraphic unit) through integrated study of stratigraphy. Obtainment of nine new zircon LA-ICP-MS U-Pb ages of intrusions offered new information for establishing the evolving process and spa- tio-temporal fi'amework of the magrnatic rocks. Early Cretaceous Baoting complex is defined as C-type adakite by geochemical research, which provides basic geological information to search for mineral deposits in Late Yanshanian granite in this area. The petrological, deformation and kinematic features of deformable zone of newly discovered NE-trending Mangsan Reservior-Changfeng ductile shear zone are studied in detail. One rare earth deposit and ten ore occurrences are discovered in this geological survey, and four metallogenic prog- nosis areas are pointed out for further geologic prospecting. The types and distributing character of geological hazards are investigated, and the formation mechanism and inducement of which are also discussed.关键词
地层划分/锆石U—Pb测年数据/C型埃达克质岩/韧性变形带/海南吊罗山Key words
stratigraphic division/zircon U-Pb dating/C-type adakite/ductile shear zone/regional geological survey/Diaoluoshan area, Hainan Island分类
天文与地球科学引用本文复制引用
魏昌欣,李孙雄,云平,周进波,官军,王超,袁勤敏,朱耀河,莫位任..海南吊罗山一带1:5万区调主要成果与进展[J].华南地质与矿产,2011,27(4):335-341,7.基金项目
中国地质调查局国土资源大调查项目(编号:1212010710716) 本文是集体劳动的成果,参加野外调查和室内资料整理的还有吴剑波、江宏伟、胡在龙、汪焰华、吕嫦艳、曾雁玲、连明、龙军等同志,在此一并表示衷心感谢! ()