湖南宝山地区水系沉积物地球化学特征及找矿预测
发布时间：2019-05-08 21:00
【摘要】：湖南宝山地区位于南岭东西向构造-岩浆成矿带中段北缘,处于南岭W、Sn、Mo、Bi、Cu、Pb、Zn、Au、Ag、Fe、Mn等元素高度浓集的地球化学块体之中,是南岭多金属成矿带的重要组成部分。本文通过对湖南宝山地区1:5万水系沉积物地球化学测量数据进行地球化学参数特征统计,运用相关分析、R型聚类分析、因子分析方法进行元素的共生组合特征分析;对单元素地球化学异常、综合异常区根据其所处的地质背景进行了解析评价;结合区内地质、矿产、地球物理、地球化学特征进行综合分析,圈定找矿靶区,取得了以下认识:1、宝山地区出露地层主要为泥盆系、石炭系、二叠系等,先后经历了加里东运动、海西运动、印支运动、燕山运动、喜山运动等多次构造活动。岩浆岩出露面积不大,岩体规模小,主要为燕山早期酸性-中酸性花岗斑岩、花岗闪长斑岩、石英斑岩等。2、研究区内各元素间的总体相关性较好,相关性最强的为Pb与Ag、Zn、Bi,Cu与Zn,其相关系数0.8,呈强正相关;其次是Au、W、Sn、Sb、As,Ni、V、Co、Cr、Mn等元素间的相关系数介于0.5-0.8之间,呈正相关;F、La、Hg元素与其它元素间相关系数较低甚至为负相关。3、对19种元素进行地球化学异常特征分析,圈定了38处单元素异常,在单元素异常的基础上,共圈定8处综合异常,其中有进一步扩大矿床(点)找矿远景的A1类异常1处,已知矿床能很好地解释引起异常原因的A2类异常2处,推断可能发现矿点的B3类异常5处。异常与已知矿(床)点的吻合程度较高,为矿产普查提供了大量的找矿信息。通过分析区内的地层、岩性、构造、岩浆岩、地球物理、地球化学等诸方面控矿因素,以宝山铅锌银多金属矿床为典型矿床,建立了区内找矿模式,提出了找矿标志,圈定了麦子坪-金子岗-梧桐铅锌多金属找矿靶区与禾茂村-马鞍岭铅锌多金属矿找矿靶区,为区内开展下一步工作寻找铅锌多金属矿提供有意义的帮助。
[Abstract]:Baoshan area, Hunan Province, is located in the northern margin of the east-west tectonic-magmatic metallogenic belt in Nanling. It is located in the highly concentrated geochemical blocks of WSnMo, Mo, Bi, Cuand Pb, au, Fe, mn and other elements in Nanling WSN, Mo, Bi, Pb, au, Fe, mn and other elements. It is an important part of Nanling Polymetallic metallogenic belt. In this paper, the geochemical parameter characteristics of 1: 50 000 stream sediment geochemistry survey data in Baoshan area of Hunan Province are counted, and the symbiotic assemblage characteristics of elements are analyzed by correlation analysis, R-type cluster analysis and factor analysis. The single element geochemical anomaly is analyzed and evaluated according to its geological background. Based on the comprehensive analysis of geological, mineral, geophysical and geochemical characteristics in the area, the prospecting target areas are delineated, and the following understandings are obtained: 1. The exposed strata in Baoshan area are mainly Devonian, carbonitic, Permian and so on. Successively experienced Caledonian movement, Hercynian movement, Indosinian movement, Yanshan movement, Himalayan movement and many other tectonic activities. The magmatic rocks have small exposed area and small rock mass, mainly acid-intermediate acid granodiorphyry, granodiorite porphyry, quartz porphyry and so on in the early Yanshan period. 2. The overall correlation among the elements in the study area is good, and the strongest correlation is between Pb and Ag,. The correlation coefficient between Zn,Bi,Cu and Zn, was 0.8, which was strongly positive correlation. Secondly, the correlation coefficient between Au,W,Sn,Sb,As,Ni,V,Co,Cr,Mn and other elements is between 0.5 and 0.8, which is positive correlation. F, La. the correlation coefficient between mercury and other elements is low or even negative. 3. The characteristics of geochemical anomalies of 19 elements are analyzed, and 38 single element anomalies are delineated on the basis of single element anomalies. A total of 8 comprehensive anomalies are identified, including 1 type A1 anomaly which further expands the prospecting prospect of the deposit (point). It is known that the deposit can well explain two A2 anomalies causing the anomaly, and it is inferred that five B3 anomalies may be found at the ore site. The anomaly is in good agreement with the known ore (bed) points, which provides a great deal of prospecting information for mineral prospecting. Based on the analysis of strata, lithology, structure, magmatic rocks, geophysics, geochemistry and other ore-controlling factors in the area, taking Baoshan lead-zinc-silver polymetallic deposit as a typical deposit, the prospecting model in the area is established, and the prospecting criteria are put forward. The target area of Maiziping-Jinzigang-Indus lead-zinc polymetallic prospecting and the prospecting target area of Wemaocun-Maanling lead-Zinc Polymetallic Mine are delineated, which provides meaningful help for the next work in the area to find lead-Zinc Polymetallic Mine.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P632.3
本文编号：2472218
[Abstract]:Baoshan area, Hunan Province, is located in the northern margin of the east-west tectonic-magmatic metallogenic belt in Nanling. It is located in the highly concentrated geochemical blocks of WSnMo, Mo, Bi, Cuand Pb, au, Fe, mn and other elements in Nanling WSN, Mo, Bi, Pb, au, Fe, mn and other elements. It is an important part of Nanling Polymetallic metallogenic belt. In this paper, the geochemical parameter characteristics of 1: 50 000 stream sediment geochemistry survey data in Baoshan area of Hunan Province are counted, and the symbiotic assemblage characteristics of elements are analyzed by correlation analysis, R-type cluster analysis and factor analysis. The single element geochemical anomaly is analyzed and evaluated according to its geological background. Based on the comprehensive analysis of geological, mineral, geophysical and geochemical characteristics in the area, the prospecting target areas are delineated, and the following understandings are obtained: 1. The exposed strata in Baoshan area are mainly Devonian, carbonitic, Permian and so on. Successively experienced Caledonian movement, Hercynian movement, Indosinian movement, Yanshan movement, Himalayan movement and many other tectonic activities. The magmatic rocks have small exposed area and small rock mass, mainly acid-intermediate acid granodiorphyry, granodiorite porphyry, quartz porphyry and so on in the early Yanshan period. 2. The overall correlation among the elements in the study area is good, and the strongest correlation is between Pb and Ag,. The correlation coefficient between Zn,Bi,Cu and Zn, was 0.8, which was strongly positive correlation. Secondly, the correlation coefficient between Au,W,Sn,Sb,As,Ni,V,Co,Cr,Mn and other elements is between 0.5 and 0.8, which is positive correlation. F, La. the correlation coefficient between mercury and other elements is low or even negative. 3. The characteristics of geochemical anomalies of 19 elements are analyzed, and 38 single element anomalies are delineated on the basis of single element anomalies. A total of 8 comprehensive anomalies are identified, including 1 type A1 anomaly which further expands the prospecting prospect of the deposit (point). It is known that the deposit can well explain two A2 anomalies causing the anomaly, and it is inferred that five B3 anomalies may be found at the ore site. The anomaly is in good agreement with the known ore (bed) points, which provides a great deal of prospecting information for mineral prospecting. Based on the analysis of strata, lithology, structure, magmatic rocks, geophysics, geochemistry and other ore-controlling factors in the area, taking Baoshan lead-zinc-silver polymetallic deposit as a typical deposit, the prospecting model in the area is established, and the prospecting criteria are put forward. The target area of Maiziping-Jinzigang-Indus lead-zinc polymetallic prospecting and the prospecting target area of Wemaocun-Maanling lead-Zinc Polymetallic Mine are delineated, which provides meaningful help for the next work in the area to find lead-Zinc Polymetallic Mine.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P632.3
【参考文献】
相关期刊论文 前1条
1 奚小环;;青藏高原区域化探方法技术研讨会议在成都举行[J];物探与化探;2008年02期
，本文编号：2472218
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