云县邦东—景谷民乐地区火山岩型铜矿找矿前景

本区位于滇西特提斯沟—弧—盆构造体系的主火山弧地体中,处于澜沧江褶断束东凸弧形转折处,上三叠统小定西组钙碱性火山碎屑岩、次火山岩含矿,火山机构控制矿体的产出形态,后期构造、侵入体使矿体叠加、富积,矿化类型为火山—次火山岩热液改造矿床;地、物、化、遥等成矿地质条件有利,具有很好的找矿前景。     

地面高精度磁测在印尼滨海型磁铁矿应用

综合运用低纬度化极与建立模型正演等数据处理手段进行隐伏矿体预测,发现与成矿有关的磁异常,显示良好成矿前景。钻孔证实有工业矿体。     

云南江城岩脚铅锌矿控矿因素

矿床位于江城中新生代拗陷盆地,铅锌矿赋存于F1断层两侧景星组下段一、三、五岩段中,分砂岩型和角砾岩型。存在三种矿物组合,受盆地演化、构造、岩性控制明显。     

滇东南大型超大型矿床成矿规律及找矿远景

华南成矿省滇东南成矿带是国内大型超大型矿床较多地区,以往认为其成因与滇东南三大花岗岩体的侵入有关,但从上世纪80年代以后,不少科研单位及学者在3个超大型矿床的块状硫化物矿石中发现了喷流沉积的重要证据。白牛厂V1矿体的直接顶、底板地层,在多个穿矿钻孔中发现三叶虫化石以及在白羊矿段矿石中发现了沉积锡石等也难与阿尾隐伏花岗岩体的成矿作用相联系。     

香格里拉红牛铜多金属矿成矿模式及深部找矿

红牛矿属印支晚期义敦岛弧带南段、中甸弧主弧期远程熔体(岩浆)—溶液改造型矽卡岩矿床,赋存于上三叠统曲嘎寺组第二段地层中。除典型矽卡岩铜矿床特征外,出现成矿温度较高的辉钼矿,推测矿区深部应发育含矿性较好的中酸性侵入体,具有寻找大—超大型矽卡岩—斑岩复合型铜钼多金属矿床的找矿前景。     

云南弥渡苴力地区多金属矿找矿远景

研究区有:与火山岩有关的铜矿、与断裂活动有关的热液脉状铜矿、与基性-超基性侵入岩有关的铂钯(铜、镍)矿等矿产。成矿条件分析表明,弥渡苴力地区具有较好的多金属矿找矿远景。     

保山市清水河铜铅锌多金属矿外围找矿新思路

工作区1∶5万土壤化探Cu、Pb、Zn、Ag、Au等元素异常发育,重力梯度带也显示存在中型Cu、Pb、Zn硫化物中型矿床的可能。研究认为:背斜核地(双脉地带)有较大背景。     

铁米尔特——恰夏——萨热阔布多金属金矿床系列矿床地质地球化学研究

铁米尔特－－恰夏－－萨热阔布多金属金矿田已发现铁米尔特铜铅锌矿床、恰夏铜矿床、萨热阔布金矿床，组成了矿田的矿床系列。早泥盆世火山活动于近火山口附近形成了与火山喷气热液有关的恰夏黄铁矿型铜矿床；于火山洼地中形成与火山沉积作用有关的铁米尔特铜铅锌多金属矿床，褶皱期构造破碎带中形成构造蚀变岩型萨热阔布金矿床。     

Deep-sea fan pinch-out geometries and their relationship to fan architecture,Tanqua Karoo basin (South Africa)

Exceptional exposures of Permian basin floor fans (fans 3, 4) and a slope fan (fan 5) in the Tanqua Karoo foreland basin of South Africa have enabled an investigation of the relation between the pinch-out geometries and fan architecture. The pinch-out geometry of fan 3 is characterized by the down dip transition from thin to medium bedded sheet deposits to pinch-out fingers, which are overlain by younger prograding sheet deposits. This geometry reflects the progradational stacking pattern of the fan. In contrast, the fan 4 pinch-out fingers consist of stacked channel fills in the same conduit. This pinch-out configuration relates to the dominant aggradational style observed on the mid and distal parts of fan 4. Fan 5 represents a slope fan comprising an axial channel conduit, which branches down slope into three distributary channels. The distal fan is characterized by larger channel fills, which may represent bypass channels to other basin floor fans. The very thick-bedded nature of the youngest channel fill unit suggests early bypass followed by retrogradation as indicated by the presence of thinner bedded heterolithic channel fill deposits along the axial conduit. Although some of the massive pinch-out channels exhibit basal scour, their depositional morphology suggests that they mainly originated due to the infill of subtle topographic depressions by low concentration turbidity currents. Instead of describing these features as channel fills, the use of the term pinch-out fingers is preferred.     

保山金厂河铜多金属隐伏矿综合找矿

综合分析区域地质、磁法、化探、重力资料及相临矿区岩石矿石电、磁性特征基础上，通过靶区优选，提出金厂河磁异常具有寻找大型多金属硫化物矿床的前景。经1：1万地质测量、1：1万磁法及大功率激电中梯测量、偶极测深、对称四极测深、沟系次生晕测量及原生晕测量后，圈定目标矿区约3km^2。综合解译后确定：陡岩电磁性体为顶部埋深250m～270m，厚130m，走向长650m，倾向延深约800m的多金属硫化物地质体。经三个钻孔施工验证，均已见到厚大铜铁矿体，实现隐伏矿床找矿的重大突破。