大兴安岭地区成矿地质特征及找矿前景分析

大兴安岭地区是古生代古亚洲成矿域与中生代滨太平洋成矿域相互叠置的重要成矿区带,具有潜在的找矿前景.本文根据该地区的这一特殊的成矿地质环境,对矿床（点）分布、矿床类型、物化探异常特征及成矿地质背景进行了详细研究,总结了各成矿区带的成矿地质特征、成矿作用及成矿规律,进行了找矿前景分析,提出了以找大矿、富矿和找隐伏矿、半隐伏矿为主的找矿思路,并指出了本区找矿重点和找矿方向,提出了矿产工作的部署建议.     

扬子板块西缘攀西地区白草矿区黄铁矿标型元素特征及其指示意义

黄铁矿是重要的金属硫化物矿物,在多种矿床中均有产出,其标型特征对矿床成因、矿体空间分布等具有重要的指示意义.以扬子板块西缘攀西地区白草矿区黄铁矿为研究对象,利用矿相学、电子探针等分析方法来对比研究浸染状、致密块状、斑杂状、网脉状矿石中黄铁矿的标型元素特征.结果表明:白草矿区黄铁矿Fe、S平均含量(质量分数,下同)分别为...     

油气田开发中油气藏地球物理研究

油气藏地球物理方法应用至油气田开发中,直接关系着构造、储层和流体表征精度和准确度.为了详细梳理油气田开发中油气藏地球物理研究核心内容和新进展,为该项研究推广应用提供参考.从构造解释、储层预测、流体描述等3方面梳理该研究核心内容.结果认为,构造描述中地球物理研究主要包括井震结合构造精细解释、基于密井网资料构造精细解释,储...     

Hydrodynamic characteristics and sediment transport of a tidal river under influence of wading engineering groups

By taking the Yong River for example in this paper, based on the multiple measured data during 1957 to 2009, the change process of runoff, tide feature, tidal wave, tidal influx and sediment transport are analyzed. Then a mathematical model is used to reveal the influence mechanism on hydrodynamic characteristics and sediment transport of the wading engineering groups such as a tide gate, a breakwater, reservoirs, bridges and wharves, which were built in different periods. The results showed the hydrodynamic characteristics and sediment transport of the Yong River changed obviously due to the wading engineering groups. The tide gate induced deformation of the tidal wave, obvious reduction of the tidal influx and weakness of the tidal dynamic, decrease of the sediment yield of flood and ebb tide and channel deposition. The breakwater blocked estuarine entrances, resulting in the change of the tidal current and the reduction of the tidal influx in the estuarine area. The large-scale reservoirs gradually made the decrease of the Yong River runoff. The bridge and wharf groups took up cross-section areas, the cumulative affection of which caused the increase of tidal level in the tidal river.     

利用U—1000型激光拉曼探针测定流体包裹体气体成分的研究

本文利用U－1000型激光拉曼探针成功地测量出单个流体包裹体中H2S、CH4、CO2气体成分，并讨论了包裹体中这些气体的拉曼谱峰位移与包裹体内压的关系，分析了影响激光拉曼探针定量测定包裹体气相成分的取面积和拉曼定量因子因素。     

滇中钛铁砂矿的区域成矿条件和矿床类型

滇中钛铁砂矿自1984年发现以来,至今已知其规模大,品位高,可列为云南黑色金属矿产仅次于铁、锰的优势矿种。滇中钛铁砂矿以其毗邻昆明工业区,交通方便,水电条件良好,可选性试验效果甚佳,精矿品质优良,矿体裸露地表,露采可以不占或少占农田,已日益引起国内外矿业界的关注。近年来,一些地方小选厂相继投产,精矿产品供不应求,初步获得明显的经济效益;钛精矿深加工试验亦取得良好结果,由资源优势转化成经济优势的条件是具备的。     

浅议中酸性岩类成矿系统层次规律及其找矿意义

本文拟用系统层次性的思路,分析我国中酸性岩类成矿系统层次规律及其找矿意义。