Geology and mineral resources of the Congonhas district, Minas Gerais, Brazil
Geology and mineral resources of the Congonhas district, Minas Gerais, Brazil
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巴西米纳斯吉拉斯州孔戈尼亚斯地区的地质和矿产资源
DOI：
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发表时间：
1957
期刊：
影响因子：
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通讯作者：
P. Guild
中科院分区：
文献类型：
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作者：
P. Guild
_________________________________________ _ 介绍 ______________________________________ _ 米纳斯吉拉斯的中心地区铁 _______________ _ 启用区 _ ________________________ -__ 位置、文化和通信 _______ _ 地形特征 _______________________ _ 以前的地质调查 __________________ _ 目前调查 ___________________________ _ 确认 ______________________________ _ 地质背景 ___________________________________ _ 一般特征 _______________________________ _ 区域设置 ___________________________ _ 启用区 _________________________ _ 基底岩石 _________________________________ _ 变质沉积岩 _______________ _ 米纳斯系列 _______________________________ _ 较低的组 __________________________ _ 中间组 ______________________ __ 上组 _____________________ ---- 绿片岩序列 ______________________ _ 我tacolumi系列 ____________________________ _ 侵入岩 ________________________________ _ 超镁铁的岩石 _________________ ____ --__ 花岗闪长岩 _______________________________ _ 基本堤岩 ___________________________ _ 脉石英_______________________________ _ Quartz-kyanite-pyrophyllite静脉 ________ _ Quartz-specularite静脉 ________________ _ " 齐墩果维佳”石英 _____________________ _ 结构 _~----------------------------------- 结构元素的变质岩__平面元素 _______________________ _ 线性元素 _______________________ _ 关节 ________________________________ _ 主要结构特点 ___________________ _ 折叠 _________________________________ _ 推力的缺点__________________________ _ Engenho错 _________________________ _ 深源的缺点 _______________________ _ 其他的缺点 ___________________________ _ 启用低地的结构 ______ _ 变质作用 ________________________________ _ 区域变质作用 ____________________ _ 高原地区 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _____ _ 低地地区 _________________________ _ 热变质作用 _____________________ _ 绿片岩的问题 _______________________ _地形学的发展 ______________________ _ 地表的存款 _______________________________ _ 剩余存款 __________________________ _ 红土和铁角砾岩 _____________________ _ 风化的产物白云石 ________ _ 冲积层 _________________________________ _ 地质矿产 __________________________ _ 铁 __________________________________________ _ 我tabirite __________________________________ _ 化学和物理性质 ___________ _ 起源________________________________ _第一页
_________________________________________ _ Introduction ______________________________________ _ Iron region of central Minas Gerais _______________ _ Congonhas district_ ________________________ -__ Location, culture, and communications _______ _ Topographic features _______________________ _ Previous geologic investigations __________________ _ Present investigation ___________________________ _ Acknowledgments ______________________________ _ Geologic setting ___________________________________ _ General features _______________________________ _ Regional setting ___________________________ _ Congonhas district _________________________ _ Basement rocks _________________________________ _ Metamorphosed sedimentary rocks _______________ _ Minas series _______________________________ _ Lower group __________________________ _ Middle group ______________________ __ Upper group _____________________ ----Green-schist sequence ______________________ _ I tacolumi series ____________________________ _ Intrusive rocks ________________________________ _ Ultramafic rocks _________________ ____ --__ Granodiorite _______________________________ _ Basic dike rocks ___________________________ _ Vein quartz _______________________________ _ Quartz-kyanite-pyrophyllite veins ________ _ Quartz-specularite veins ________________ _ "Olea vage" quartz _____________________ _ Structure_~-----------------------------------Structural elements of the metamorphic rocks __ Planar elements _______________________ _ Linear elements _______________________ _ Joints ________________________________ _ Major structural features ___________________ _ Folds _________________________________ _ Thrust faults __________________________ _ Engenho fault _________________________ _ Deep-focus faults _______________________ _ Other faults ___________________________ _ Structure of the Congonhas lowland ______ _ Metamorphism ________________________________ _ Regional metamorphism ____________________ _ Highland areas_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _____ _ Lowland areas _________________________ _ Thermal metamorphism _____________________ _ The green-schist problem _______________________ _ Physiographic development ______________________ _ Surficial deposits _______________________________ _ Residual deposits __________________________ _ Laterite and canga _____________________ _ Weathering products of dolomite ________ _ Alluvium _________________________________ _ Geology of mineral deposits __________________________ _ Iron __________________________________________ _ I tabirite __________________________________ _ Chemical and physical nature ___________ _ Origin ________________________________ _ Page 1