广东阳春地区1:5万水系沉积物地球化学特征及找矿预测

发布时间：2018-03-17 09:15

本文选题：水系沉积物　切入点：地球化学特征　出处：《东华理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文的研究区为广东省阳春地区,研究区位于钦杭成矿带南西段,吴川-四会断裂中段东南侧,云开地块与粤中地块交汇处,广东阳春盆地多金属成矿带。具有良好的成矿地质条件,找矿潜力巨大。粤西阳春盆地作为广东省重要的多金属矿集区之一,区内构造复杂,导致多期次、多阶段的岩浆侵位,在不同的围岩条件下形成不同类型、不同矿种的内生金属矿床。本文对阳春地区进行了1:50000水系沉积物的地球化学测量,在全区1904km2范围内,共圈出了19处异常,价值分类A1类5处,A2类2处,B1类6处,B2类2处,B3类2处、C2类及C3类各1处。对7处W异常、8处Au异常及5处Cu异常进行了异常多参数评序后综合认为,AS13、AS15、AS18、AS5、AS10五个异常是找钨矿前景较好的异常,AS19是找金矿前景最好的异常,AS5是找铜矿前景最好的异常。此外,AS15、AS14也有找金、铜矿较好前景,AS18对找金铜矿、AS13对找铜也较为有利。依据元素的共生组合关系、空间分布特征,可将研究区划分为6个地球化学区、4个地球化学亚区。并探讨了元素的相关关系和共生组合关系。通过对异常参数的研究,阳春地区单元素异常的总面积以W、Bi、Mo、Sn最大,次为Ag、Au,异常规模(NAP值)从大致小排列次序为W、Bi、Mo、Sn、Ag、Cu、Au,所以研究区找矿的主攻矿产应该是钨、铋、钼、锡,其次为银、铜、金矿,为今后找矿工作指明了方向。在研究区范围内共划分了七处找矿远景区。其中有甲级找矿远景区4处,乙级找矿远景区2处,丙级找矿远景区1处。为区内矿产普查缩小了找矿靶区并指明了找矿方向,为矿产普查选点提供了依据。
[Abstract]:The research area of this paper is Yangchun area, Guangdong Province. The research area is located in the south west section of Qinghang metallogenic belt, southeast of Wuchuan-Sihui fault middle segment, and the intersection of Yunkai block and central Guangdong block. The polymetallic metallogenic belt in Yangchun Basin, Guangdong Province, has good metallogenic geological conditions and great prospecting potential. As one of the important polymetallic ore concentration areas in Guangdong Province, Yangchun Basin in western Guangdong Province is characterized by complex structure, resulting in multiple periods and stages of magmatic emplacement. Endogenic metal deposits of different types and mineral types were formed under different surrounding rock conditions. Geochemical survey of 1: 50000 water system sediments in Yangchun area has been carried out. 19 anomalies have been formed within 1904 km ~ 2 of the whole area. Value classification A1, class A1, class A, class A, class B, class B, class B, class B, class 2, class B 3, class 2, class C 2, and class C3, one each. 7 cases of W anomaly, 8 cases of au anomaly and 5 cases of Cu anomaly were evaluated with abnormal multiparameter analysis, and it was concluded that there are 5 anomalies of AS13, AS15, AS18, AS5, AS10. The anomaly AS19 is the best one for gold prospecting. The anomaly AS5 is the best anomaly for copper prospecting. In addition, there is also gold prospecting in AS15 / AS14. The better prospect of copper deposit is that AS18 is also more favorable to the prospecting of gold and copper ore. According to the symbiotic association relationship of elements, the spatial distribution characteristics, The study area can be divided into 6 geochemical areas and 4 geochemical subregions. The correlation and symbiotic association of elements are discussed. Through the study of anomaly parameters, the total area of single element anomaly in Yangchun area is the largest. In the order of small order, the main ore prospecting in the study area should be tungsten, bismuth, molybdenum, tin, silver, copper and gold. The paper points out the direction of the prospecting work in the future. Within the scope of the research area, there are altogether seven prospecting areas. Among them, there are 4 Grade A and 2 Grade B Prospecting Scenic spots. For the mineral survey in this area, the prospecting target area is reduced and the prospecting direction is pointed out, which provides the basis for the mineral survey selection.
【学位授予单位】：东华理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P632.3

【相似文献】