贵州中酸性隐伏岩体圈定与找矿意义  

Delineation of Concealed Intermediate-Acidic Pluton and Significance of Mineral Prospecting in Guizhou Province

作　　者：王亮 张嘉玮 陈国勇[3] 胡从亮 向坤鹏 屈念念 WANG Liang;ZHANG Jiawei;CHEN Guoyong;HU Congliang;XIANG Kunpeng;QU Niannian(Guizhou Institute of Geological Survey,Guiyang,Guizhou 550081;Guizhou Engineering Research Center for Geologic-Geophysical Exploration Development and Application,Guiyang,Guizhou 550081;Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang,Guizhou 550004)

机构地区：[1]贵州省地质调查院,贵州贵阳550081 [2]贵州省地质物探开发应用工程技术研究中心,贵州贵阳550081 [3]贵州省地质矿产勘查开发局,贵州贵阳550004

出　　处：《地质与勘探》2020年第2期387-402,共16页Geology and Exploration

基　　金：贵州省地质矿产勘查开发局重大科研专项(黔西北地区铅锌找矿攻关,编号:黔地矿纪要(2015)14号)贵州省科技计划项目:贵州省地质调查院院士工作站(编号:黔科合平台人才[2018]5626);贵州省地质物探开发应用工程技术研究中心项目(编号:黔科合[2016]平台人才5401)联合资助。

摘　　要：在黔湘桂一带,湖南黔阳-溆浦-城步的白马山-中华山-崇阳坪-瓦屋塘、五团-苗儿山-越城岭及广西融安-贵州从江的摩天岭、元宝山,地表出露花岗岩体上反映为重力低、磁力低的地球物理场响应特征。在贵州梵净山、九万大山出露的花岗岩体上也表现为重力低、磁力低及高电阻率的物理性质,与邻省极其相似。因此,本文根据中酸性岩浆岩的物性表征,以剩余重力值-2×10^-5 m/s^2、磁场强度值-10 nT等量线为基础,外加布格重力异常负圈闭,圈定了贵州境内逾百处隐伏岩体分布,其推测成果对寻找与中酸性岩体有关的矿产具有指示作用。Around many areas of southeast China,such as the Baimashan-Zhonghuashan-Chongyangping-Wawutang of Qianyang-Xupu-Chengbu and Wutuan-Miao’ershan-Yuechengling in Hunan Province,Rong an of Guangxi,and Motianling and Yuanbaoshan in Chongjiang of Guizhou Province,low gravity and low magnetic anomalies characterize the exposed granite bodies on the surface.Similar features also appear in Fanjingshan and Jiuwandashan of Guizhou Province.In such a setting,according to characterization of physical properties of intermediate-acidic magmatic rock,using contours of residual gravity anomalies of-2×10^-5 m/s^2 and magnetic field intensity of-10 nT,plus negative Bouguer gravity anomalies,this paper delineates over a hundred sites with distribution of concealed pluton.The results may provide indicators for prospecting minerals in connection with intermediate-acidic pluton in Guizhou.

关 键 词：广西 湖南 贵州 花岗岩 闪长岩类 隐状岩体 地球物理 

分 类 号：P542[天文地球—构造地质学]