摘要
在总结江苏新沂高流地区地质特征的基础上,结合区内1∶10 000 土壤地球化学调查工作,系统研究该区元素含量及组合特征,并进行找矿预测.异常结果显示该区Au、Ag、Cu、Mo、Pb、Zn、As、Sn等单元素地球化学异常明显,其中Au、Ag、Mo 3个元素的异常强度和分带性均好,其形态分布受NNE向构造破碎和碱长花岗岩体等因素制约.在研究区共圈定了 14处综合异常,通过异常评价,位于同一断裂带附近的3处异常成矿地质条件优越;对综合异常开展地球化学剖面查证工作,结果显示其中1处Au、Cu等元素峰值均位于NNE向断裂带中心位置.结合该区成矿地质条件和土壤地球化学异常特征,初步总结了研究区金、多金属矿找矿标志,为该区进一步找矿提供间接依据.
Abstract
Based on the geological characteristics and 1∶10,000 soil geochemical survey in Gaoliu area,Xinyi City,Jiangsu Province,content and combination of elements have been researched systematically and prospecting forecast has been carried through.The results show that the geochemical anomalies of single elements such as Au,Ag,Cu,Mo,Pb,Zn,As and Sn are obvious in this area,among which the anomaly intensity and zonation of Au,Ag and Mo are good,and their morphological distribution is restricted by NNE-trending structural fragmentation and alkali feldspar granite mass.A total of 14 comprehensive anomalies has been identified in the survey area,among which three well-evaluated anomalies are located near the same fault zone with excellent mineralization geological conditions.The geochemical profile verification of the comprehensive anomaly shows that the peaks of Au,Cu and other elements are located in the center of the NNE-trending fault zone.Based on the metallogenic geological conditions and geochemical characteristics of soil,the prospecting criteria of gold and polymetallic deposits in this area are summarized preliminarily,which can provide indirect ba-sis for further prospecting in this area.
基金项目
中国地调局"中国矿产地质志"项目(DD20221695)
中国地调局"中国矿产地质志"项目(DD20190379)
中国地调局"中国矿产地质志"项目(DD20160346)
江苏省地质勘查专项(苏财建2018[96]号)
NETL
NSTL
万方数据