综合物探方法在辽东石墨矿勘探中的应用

    Application of integrated geophysical methods in graphite exploration in eastern Liaoning Province

    • 摘要: 辽东地区高家峪岩组含石墨地层发育,是辽吉石墨成矿带上重要的成矿区. 选择有效的技术方法识别石墨矿化、解译地质结构是非常重要的. 本研究通过在辽东地区含石墨地层开展综合物探方法试验,全面评价了自然电场法和激电测量方法的适用性. 利用该方法组合在辽东向阳地区进行勘测,采用多参数解译深部地质结构,经钻探验证与实际地质情况吻合. 基于本次勘查成果总结了辽东典型石墨矿床的找矿标志,提出了石墨矿床地质-地球物理找矿模型.

       

      Abstract: The graphite-bearing strata of Gaojiayu Formation are well developed in eastern Liaoning Province, which is an important metallogenic area within the Liao-Ji graphite metallogenic belt. Previous studies have gained some understanding of the genesis of graphite deposits in this region, and have also tested various exploration techniques. For graphite exploration, selecting effective methods to identify graphite mineralization and interpret geological structures is of critical importance. In this study, integrated geophysical methods were tested on the graphite-bearing strata in eastern Liaoning to comprehensively evaluate the applicability of the spontaneous potential(SP) method and induced polarization (IP) surveys. This combined method was then applied to Xiangyang area in eastern Liaoning, where multi-parameter interpretation was used to characterize the deep geological structures. The interpretation results were subsequently verified by drilling and showed good consistency with the actual geological conditions. Based on these exploration results, this paper presents prospecting indicators for typical graphite deposits in eastern Liaoning and proposes a geological-geophysical prospecting model for such deposits.

       

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