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.