陕西太白地区断裂构造1:5万高精度磁测综合解释及成矿预测

Using 1:50000 precision magnetic data to interpret fracture and metallogenic prognosis in Shanxi Taibai area

太白地区矿产资源丰富,但在过去对秦岭成矿带的详探中,此区域勘探程度较低.经过对太白地区前人地质成果资料的详尽研究后,依靠最新的1∶5万地面高精度磁法测量图,初步查明调查区磁场总体特征及磁异常分布特征.通过对磁异常的研究,了解磁场与构造、岩石及矿产的相关联系,推测断裂构造28条,其中与已知断裂相近的有9条断裂,新推测断裂19条,这些断裂是区内重要的成矿、控矿断裂.由此,以金、铅锌矿为主要勘探目标,并对铜、钼、钴等多种金属矿产展开研究.预测出成矿远景区域,为以后找矿提供思路分析,为该区后续找矿工作的进行提供参考.

The mineral resources of Taibai area are abundant. In the past,however,during the detailed exploration of the Qinling Metallogenic Belt,the regional exploration degree is low. Having studied thoroughly about the previous geological results in Taibai areas and relied on the latest 1 ∶50000 the ground high-precision magnetic measurement, the preliminary research finds out the characteristics of magnetic field as a whole and the distribution of magnetic anomaly. The study of magnetic anomaly helps us understand the relative connections between magnetism and structure,rocks and minerals. From the study,28 fracture structures can be speculated,which are similar to the nine known fractures.The 19 fractures of new speculation are of great importance for mineralization and ore controlling. As a result,gold,lead and zinc should be regarded as the main exploration targets. Moreover,the research of copper,molybdenum,cobalt and other metallic minerals is supposed to go further. The prediction of metallogenic prospective areas offers thinking analysis and reference to the later and further ore-prospecting work in this area.