摘要
桐柏县老湾一鸿仪河金矿带，经近年工作，在老湾－上上河及下黄竹园一带求得一定规模的金矿储量。１９８６年，经１：２０万区域地球化学调查，圈出大面积金银异常。为使该区在找矿上尽快取得重大突破，在开展１：２．５万水系沉积物测量的基础上，１９８７年在矿带开展了原生晕研究工作。通过对已知矿区地表和深部工程的系统岩石测量，建立了矿床地球化学异常模式和找矿评价指标，进而对矿床、矿带和矿区外围应用累加指数圈定异常，并进行了系统的评价和预测，取得了明显的地质找矿效果。本文着重介绍这一应用效果。
On the basis of 1:25000 stream sediment survey of the study area, a primary halo study of the are belt was carried out. Through systematic rock survey in surface and deep workings of the known ore districts, the geochemical anomaly model and ore-prospecting evaluation indexes of ore deposits were established. Furthermore ,by using accumulative exponents, anomalies were delineated in ore deposits, the ore belt and outskirts of ore districts, together with a systematic evaluation and prognosis. All this has yielded obvious geological and oreprospecting effects.
出处
《物探与化探》
CAS
CSCD
1994年第4期271-280,共10页
Geophysical and Geochemical Exploration
关键词
金矿床
金矿带
地球化学
异常模式
geochemicsl anomaly model
ore-prospecting evaluation index
rock survey.
