乡城地区水系沉积物地球化学特征及找矿靶区研究

Geochemical Characteristics and Prospecting Targets of Stream Sediments in Xiangcheng Area

通过对乡城地区16个元素水系沉积物测量地球化学特征研究表明:贫乏元素有Hg;正常元素有Zn、Mn、Ni、Cu、Au、Pb、Co、Mo、TFe;较高背景元素有As、Ag、W、Bi、Sb、Sn。据元素空间分布研究和对主要异常进行推断解释,总结了构造、岩性、岩浆岩及蚀变为其控矿因素,指出NNW向构造、喇嘛垭组地层、晚印支期、晚燕山期及其复式岩体有关的地区是寻找Cu、Pb、Zn、Au、Ag、W、Sn等多金属矿的有利地区,圈出了9个找矿靶区。

According to the study on geochemical characteristics of stream sediments about 16 elements, it showsthat Hg is poor, normal elements are Zn, Mn, Ni, Cu, Au, Pb, Co, Mo and TFe, while higher background elementsare As, Ag, W, Bi, Sb and Sn. Based on spatial distribution of elements and interpretation of major anomalies, itconcludes that the structure, lithology, rock and alteration are the dominant ore-control factor. It is indicate thatthe favorable area for finding Cu, Pb, Zn, Au, Ag, W, Sn and other polymetallic ores, where the NNW trendingstructure, Lamaya formation and late indo-china period, late Yanshanian rock mass developed. In the area, nineprospecting target areas were identified.