张八岭岩群的地质特征及其划分建议  

GEOLOGICAL FEATURES OF ZHANGBALING GROUP AND ITS DIVISION

作　　者：张德宝[1] 郭坤一[1] 董茂兴[1] 

机构地区：[1]南京地质矿产研究所,210016

出　　处：《火山地质与矿产》1995年第4期1-16,共16页Volcanology & Mineral Resources

摘　　要：本文从中晚元古代张八岭岩群的原岩、变形变质、岩石化学、同位素年龄，沉积一火山喷发旋回（韵律），岩石能干性差异及与上覆、下伏层位接触关系等方面讨论了其地质特征、并在与现有文献资料对比的基础上，根据1／5万张八岭幅、珠龙幅区域地质调查路线和剖面资料．提出了对张八岭岩群重新划分建组的建议。The paper discussed geological features of Zhangbaling group on the primitive rock deformation, metamorphism, chemical composition, isotopic age determination, bedrock hardness,sedimentary-volcanic cycle and contactive relationship between the underlying bed and upperbed rocks etc. Zhangbaling group can be divided into two subgroups, based on the regional geological survey on the scale of 1: 50000 and the analysis of available geological data.

关 键 词：区域地质 构造岩石 地层单位 张八岭地区 岩群 

分 类 号：P548.2[天文地球—构造地质学]