化探异常查证技术方法探讨——以永昌县水泉子钨钼矿发现为例

DISCUSSION ON THE TECHNICAL METHODS OF GEOCHEMIC ALANOMALY VERIFICATION——A Case Study From The Shuiquanzi Tungsten-Molybdenum Deposit In Yongchang County

地球化学调查的目的之一是分析元素地球化学场特征,圈定化探异常。化探异常查证则是进一步查明异常形成原因,追索异常源,作为地质找矿为目的的异常查证就是要发现矿化富集地段。化探异常查证技术方法除分析研究成矿地质条件外,多采用物探、化探等综合方法,其中化探技术方法尤为重要,如水系沉积物加密取样、土壤地球化学测量、地质地球化学剖面测量,对异常区进行地表工程揭露和深部验证,以发现工业矿体,即确定异常性质属矿致异常。本文从区域化探异常分析入手,通过持续的异常查证,异常进一步浓缩,直到钨钼矿发现,典型实例说明,化探异常查证是一项系统工程,需要持之以恒、查明异常源,实现找矿突破。对祁连山西段众多异常查证具有指导意义。

One of the purposes of geochemical surveys is to analyze the geochemical field characteristics of elements and to delineate geochemical anomalies. The geochemical anomaly verification is to further identify the cause of the anomaly and to trace the source of the anomaly. The anomaly verification for the purpose of geological prospecting is to discover the mineralized and enriched area. In addition to analyzing the ore-forming geological conditions, geophysical and geochemical methods are widely used, among which geochemical methods are particularly important, such as water system sediment sampling, soil geochemical measurement, and geological geochemical profile measurement. Next, the surface engineering of the anomalous area is exposed and deep verified to discover the industrial ore body, that is, the abnormal nature is determined to be an anomaly caused by the mine. According to the analysis of regional geochemical anomalies and anomaly verification, the geologists further concentrated the anomalies and discovered the Shuiquanzi tungsten -molybdenum deposits finally. The typical example shows that geochemical anomaly verification is a systematic project, which needs to be consistent, identify the source of anomalies, and achieve a breakthrough in prospecting. The article is significant to abnormal verification in west Qilian.