豫西嵩县斩龙岗勘查区地球化学勘查

发布时间：2018-08-03 11:24

【摘要】：本文通过对斩龙岗勘查区区域1:20万水系沉积物、区域1:5万水系沉积物以及勘查区1:5000土壤的元素含量进行研究,采用7级异常划分方案确定异常下限,制作单元素地球化学图,单元素地球化学异常图。依据元素异常特征,确定找矿指示元素及找矿方向,圈定找矿靶区。本文主要取得以下认识:斩龙岗勘查区位于熊耳山地区东南部,勘查区面积为4.27km2。区域内出露地层主要为熊耳群鸡蛋坪组,构造以断裂为主,主要受北东向断裂控制。勘查区内发育缓倾石英脉,蚀变主要为硅化、钾化,未见明显的矿化现象。通过对勘查区区域1:20万水系沉积物的元素含量分析,采用变值7级异常划分方案确定异常下限及异常分级,综合单元素地球化学图及单元素地球化学异常图分析,可以发现斩龙岗勘查区Mo元素存在异常,异常分布在斩龙岗勘查区北部,异常级别低。通过对勘查区1:5万地球化学普查数据分析,采用定值7级异常划分方案确定异常下限及异常分级,综合单元素地球化学图及单元素地球化学异常图分析,可以得出斩龙岗勘查区找矿指示元素为Mo、Au、Pb、Zn、Bi计5项元素,其中Au元素异常级别为2级,分布在勘查区东部。Mo发育2级异常,分布在勘查区北部。通过对勘查区1:5000土壤地球化学勘查数据分析,采用定值7级异常划分方案确定异常下限及异常分级,综合单元素地球化学图及单元素地球化学异常图,得出斩龙岗勘查区找矿指示元素为Mo、Au、Pb计3项,其中Mo达到4级异常、Pb发育3级异常,分布在勘查区北部。Au在勘查区中部发育3级异常。综合斩龙岗勘查区不同比例尺的地球化学调查分析结果,依据元素组合异常综合分析,确定斩龙岗勘查区的三个找矿靶区:T1靶区位于斩龙岗东北部(英王沟-仓沟东北),找矿方向为:Mo、Pb;T2靶区位于斩龙岗中北部(菜沟东北),找矿方向为:Au、Mo;T3靶区位于斩龙岗中部(房沟-英乐沟),找矿方向为:Au、Mo。其找矿优先次序依次为:T1→T3→T2。
[Abstract]:In this paper, the element contents of 12: 20 million river system sediment, 1: 50 000 water system sediment and 1: 5 000 soil in the Zhanlong Gang exploration area are studied. The lower limit of anomaly is determined by using the 7 grade anomaly division scheme, and the single element geochemical map is made. Single element geochemical anomaly map. According to the anomalous characteristics of elements, the ore-prospecting indicator elements and prospecting directions are determined, and the prospecting targets are delineated. This article mainly obtains the following understanding: Chaolonggang exploration area is located in the southeast of Xiongershan area, the exploration area is 4.27km2. The outcropping strata in the region are mainly Xiong'er Qiping formation, the structure of which is mainly faulted and mainly controlled by the NNE fault. There is a slow dip quartz vein in the exploration area. The alteration is mainly silicification and potassium mineralization, but there is no obvious mineralization phenomenon. Based on the analysis of element contents in sediments of 12: 200 000 river systems in the exploration area, the lower limit and classification of anomalies are determined by using the scheme of anomaly division of variable value grade 7, and the analysis of single element geochemical map and single element geochemical anomaly map is combined. It can be found that there are anomalies in Mo elements in Zilonggang exploration area, which are distributed in the northern part of Zilonggang exploration area, and the anomaly level is low. Based on the analysis of geochemical survey data of 1: 50 000 in the exploration area, the lower limit and classification of anomalies are determined by using the scheme of fixed value 7 grade anomaly division, and the analysis of single element geochemical map and single element geochemical anomaly map is combined. It can be concluded that the ore-prospecting indicator elements in Zilonggang exploration area are five elements, among which the anomaly grade of au element is 2 grade, and the second grade anomaly is developed in the eastern part of the exploration area, and the gold element is distributed in the northern part of the exploration area. Based on the analysis of 1: 5000 soil geochemical exploration data in the exploration area, the lower limit of anomaly and anomaly classification are determined by using the scheme of fixed value 7 grade anomaly, and the single element geochemical map and single element geochemical anomaly map are synthesized. It is concluded that the ore-prospecting indicator elements in Zilonggang exploration area are three items, among which Mo reaches grade 4 anomaly and Pb develops grade 3 anomaly, and distributes in the northern part of exploration area. Au develops grade 3 anomaly in the middle of exploration area. According to the geochemical survey and analysis results of different scales in Zilonggang exploration area, the element assemblage anomaly is synthetically analyzed. It is determined that the three prospecting target areas in Zilonggang exploration area are: 1 target area is located in the northeast of Chaolonggang (northeast of Yingwanggou and Canggou), the prospecting direction is in the north-central part of Chaolonggang (the northeast of Caigou), the prospecting direction is in the north-central part of Chaolonggang (the northeast of the Caigou), and the prospecting direction is in Zilong. In the middle of the gang (Fanggou-Yingle ditch), the prospecting direction is: 1. The order of ore-prospecting priority is: t _ 1 / T _ 3 / T _ 2.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P632

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