摘要
介绍了礼县上坝化探低缓金异常特征、地质背景、地球化学景观及工作方法,金区域化探异常呈低缓式样出现的主要原因,是由于本区第四系厚度大、地表径流发育等微景观特征所致。遵循常规的工作程序是实现低缓异常找矿突破的有效途径,Ⅲ级查证中加大水系沉积物采样密度、Ⅱ级查证中加大土壤样采样深度至50 cm以上及加大探槽开挖深度,是实现低缓金异常找矿突破的有效方法。
Based on a description of characteristics of gold anomaly, geological background and geochemical landscape in the gold anomaly area as well as methods for verifying Shangba weak and gentle gold anomaly, the authors have reached the conclusion that such micro-landscapes as thick Quaternary sediments and well-developed surface runoff seem to be the primary causes for regional weak and gentle gold geochemical anomalies in stream sediments. The effective way to realize a breakthrough in the exploration of gold deposits is to follow the routine working procedure. The effective methods lie in increasing sampling density of stream sediments in geochemical semi - detailed survey, increasing the sampling depth of soil to over 50 cm in geochemical detailed survey, and also increasing the digging depth of exploratory trenches. K
出处
《物探与化探》
CAS
CSCD
2008年第6期615-618,共4页
Geophysical and Geochemical Exploration
关键词
甘肃省上坝金矿
低缓金异常
异常查证方法
Shangba gold deposit in Gansu Province
weak and gentle gold anomalies
methods for verifying geochemical anomalies
