缅甸南板县铁—金矿区化探异常信息的识别与评价

发布时间：2019-03-15 08:34

【摘要】：研究区位于缅甸掸邦东部,地处缅甸掸邦高原东北部边陲,其北面与中国云南西双版纳州接壤,东面隔湄公河与老挝民主共和国相望,西与缅甸第二特区(佤邦)相连,该地区资源丰富,成矿条件优越,如何快速准确地的识别、筛选及评价异常,是决定找矿效果和经济效益的关键。本文对研究区1:2.5万水系沉积物测量数据,分别采用传统的迭代法和多重分形方法进行处理,并将处理结果进行了对比。对比结果表明,多重分形方法的优点是该方法不局限于正态或者对数正态分布,能考虑地球化学数据的空间分布特征,是一种研究地球化学场的有效方法。采用聚类分析、因子分析方法研究了区内12种元素的共生组合规律,并根据元素的相关程度将相关系数0.5的元素分为三个组合:Ag—Pb—Zn元素组合、Au—As—Sb元素组合和Fe—Cu—Ni—Co元素组合。由于本区矿床属于铁—金矿床,矿床中具有工业意义的金属元素主要为Fe和Au,其次是Ag。因此,本文对元素异常场的评价重点是对Fe和Au,其次是Ag异常做评价。本文根据Fe、Au、Ag元素共生特点,它们之间密切的时空和成因联系,以及它们的工业意义,将上述三个元素组合缩减为Au—Ag、Au、Fe—Au组合。在此基础上,根据异常场的特征、规模和强度,结合实际的成矿地质背景,分别对Au—Ag、Au、Fe—Au组合异常场进行评价,并据此我们圈定出了最有希望的Au—Ag找矿靶区、Au找矿靶区、Fe—Au找矿靶区。
[Abstract]:The study area is located in the eastern part of Shan State, Myanmar, in the northeast of the Shan State Plateau, bordering Xishuangbanna, Yunnan, China, in the north, across the Mekong River and the Lao Democratic Republic in the east, and the second Special Administrative region of Myanmar (WA State) in the west. This area is rich in resources and has excellent ore-forming conditions. How to identify, screen and evaluate anomalies quickly and accurately is the key to determine the ore-prospecting effect and economic benefit. In this paper, the data of 1: 25000 stream sediment survey in the study area are processed by traditional iterative method and multifractal method, and the results are compared. The comparison results show that the advantage of multifractal method is that it is not limited to normal or lognormal distribution, but can consider the spatial distribution characteristics of geochemical data. It is an effective method to study geochemical field. Cluster analysis and factor analysis were used to study the rule of symbiosis and combination of 12 elements in the region. According to the degree of correlation of the elements, the elements of correlation coefficient 0.5 were divided into three combinations: Ag-Pb-Zn element combination. Au-As-Sb element combination and Fe-Cu-Ni-Co element combination. Because the deposit belongs to iron-gold deposit in this area, the metal elements of industrial significance in the deposit are mainly Fe and Au, followed by Ag.. Therefore, the evaluation of element anomaly field in this paper is focused on the evaluation of Fe and Au, followed by Ag anomaly. In this paper, according to the symbiosis characteristics of Fe,Au,Ag elements, the close spatio-temporal and genetic relations between them and their industrial significance, the above three element assemblages are reduced to Au-Ag,Au,Fe-Au assemblages. On this basis, according to the characteristics, scale and intensity of the anomaly field, combined with the actual ore-forming geological background, the abnormal field of the Au-Ag,Au,Fe-Au assemblage is evaluated separately, and the most promising Au-Ag prospecting target area is delineated accordingly. Au prospecting target area, Fe-Au prospecting target area.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P632

【相似文献】