为配合宁镇地区1/5万区域地质调查,采用地球化学土壤测量开展了同比例尺的区域化探工作。 (一) 工作方法概述面积性地球化学土壤测量的采样网密度为500×100米,测线方向垂直于区域构造线。采样深度20厘米左右。采至B层或C层。为了减少分析工作量以利于分析质量的提高,我们采用了组合样方法。按样点所在图 In line with the Ningzhen area 1/5 million regional geological survey, the use of geochemical soil survey conducted the same scale of regional geochemical exploration work. (A) Overview of working methods The area density of the sampling grid measured by area geochemical soil is 500 × 100 meters with the line direction perpendicular to the regional tectonic line. Sampling depth of about 20 cm. Mining to B or C layer. In order to reduce the workload of analysis in order to improve the quality of analysis, we use a combination of sample methods. According to the sample map