1∶5万岩石构造地球化学测量在粤北一六矿田中的应用  

The application of 1 ∶ 50 000 rock structure geochemical survey in the Yiliu orefield of northern Guangdong Province

作　　者：吴卫国 WU Wei-Guo(Guangdong Nonferrous Metals Geological Exploration Institution,Guangzhou 510080,China)

机构地区：[1]广东省有色地质勘查院,广东广州510080

出　　处：《物探与化探》2018年第5期866-872,共7页Geophysical and Geochemical Exploration

基　　金：中国地质调查局项目"广东韶关凡口铅锌银多金属矿整装勘查区矿产调查与找矿预测"(121201004000150017-64)

摘　　要：在粤北一六矿田开展的1∶5万岩石构造地球化学测量,以构造裂隙充填物质、矿化蚀变岩石、岩脉、褐铁矿化等为采样介质,可以有效地圈定矿致地球化学异常,且圈定的异常与水系沉积物异常基本一致,但是异常规模、强度有一定差异。结果显示,岩石构造异常与已知矿床(点)吻合度明显高于水系沉积物异常。因受采样条件限制,该方法仅适用于基岩出露较好的地区和以灰岩为主的地区。该方法对我国南方强风化、厚覆盖,以灰岩为主的地区开展地球化学勘查具有借鉴意义。The authors conducted 1 ∶ 50 000 rock structure geochemical survey in the Yiliu orefield of northern Guangdong. Structural fissure filling material,mineralized altered rock,ore veins and limonitization as the sampling media,ore-inducing geochemical anomalies could be effectively delineated,and the delineated anomalies were basically consistent with the stream sediment anomalies in spite of the existence of some differences in anomaly size and intensity. The results show that rock structure anomalies are obviously more consistent with the known ore deposits（ ore spots） than stream sediment anomalies. Due to the limitation of the sampling conditions,this method is only suitable for areas with well exposed basement rock and areas dominated by limestone. This method has reference value for geochemical exploration in strongly weathered,thickly covered areas dominated by limestone in southern China.

关 键 词：岩石地球化学测量 地球化学异常 一六矿田 粤北 

分 类 号：P632[天文地球—地质矿产勘探]