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.
出处
《华南地质与矿产》
CAS
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)
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
stratigraphic division and correlation
shear zone
thrust nappe structure
regional geological survey
Nanning city and adjacent area, Guangxi province
