广西1∶25万南宁市等四幅区调主要成果与进展  

New Progresses in 1:250 000 Regional Geological Survey in Nanning City and Adjacent Area,Guangxi Province

作　　者：周府生[1] 潘罗忠[1] 李广宁[1] 谢凌锋[1] 李锦诚[1] 龙爱林[1] 胡贵昂[1] 宁金英[1] 潘艺文[1] 全超燕[1] 梁秋明[1] 

机构地区：[1]广西区域地质调查研究院,广西桂林541003

出　　处：《华南地质与矿产》2011年第4期358-364,共7页Geology and Mineral Resources of South China

基　　金：中国地质调查局项目中南地区基础地质调查及数据更新(基[2005]08-05)

摘　　要：在广西1∶25万南宁市等四幅区调工作中,发现上二叠统彭久组与下伏中二叠统板城组为整合接触,属东吴运动时台间海槽中的低水位沉积;证实都安组(C1d)与融县组(D3r)为平行不整合,期间缺失杜内期沉积;建立了测区法门期有孔虫带。查明了六万大山-十万大山岩带酸性侵入岩与火山岩的成因联系及其活动序次,新发现二条韧性剪切带和推覆构造,为阐明钦防地块的构造属性和演化提供了新资料。Conformable contact between Upper Permian Pengjiu Formation and underlying Middle Permian Bancheng Formation, both of which belongs to low water level sedimentary during Soochow movement, is found in 1：250 000 Nanning City and adjacent area, Guangxi province. The accordant unconformity between Du＇an Formation （Cld） and Rongxian Formation （D3r）, during which lost the Tournaisian sedimentary, is conformed, and Famennian foraminifera zones of studying area are established. The genesis and activity sequence of magrnatic rocks from Liuwandashan-Shiwandashan belt are studied in detail, and new ductile shear zone and nappe structures are discovered, and those information are provide useful data for clarify the tectonic feature and evolution history of Qingzhou-Fangcheng block.

关 键 词：地层划分对比 剪切带 逆冲推覆构造 区域地质调查 南宁市等四幅 

分 类 号：P566.3[天文地球—构造地质学]