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东湾—九仗沟金矿田找矿模型及成矿预测

Prospecting model and metallogenic prediction for Dongwan−Jiuzhanggou Gold Orefield

  • 摘要: 东湾—九仗沟金矿田位于华北地台南缘的熊耳山多金属成矿带上。为了探讨东湾—九仗沟金矿田的找矿模型,采用地球物理与地球化学相结合的找矿方法。地球物理特征显示:−100~100 m标高和−600~−200 m标高为高极化异常区,其与成矿关系密切。地球化学特征显示:在100~380 m标高,矿体的原生晕分带特征较为明显,且具有明显的反分带特征,在100 m标高显示较强的前晕和中晕特征,说明在100 m标高以下矿体向下延伸的可能性较大。将地球物理找矿方法与地球化学找矿方法相结合,共圈定了2处预测靶区,可为周边同类矿床找矿提供新思路。

     

    Abstract: The Dongwan−Jiuzhanggou Gold Orefield is located in the polymetallic metallogenic belt of the Xiong’er Mountains on the southern margin of the North China Platform. To explore the prospecting model of the Dongwan−Jiuzhanggou Gold Orefield, a combined geophysical and geochemical exploration approach was employed. Geophysical characteristics indicate that the elevation ranges of −100 to 100 m and −600 to −200 m are areas of high polarization anomalies, which are closely related to metallogenesis. The geochemical characteristics indicate that at elevations of 100 to 380 m, the primary halo strip features of the orebody are quite distinct, exhibiting significant reverse strip characteristics. At an elevation of 100 m, strong forehalo and middle halo features are evident, suggesting a high potential for downward extension of the orebody below this elevation. By combining geophysical and geochemical exploration methods, two predictive target areas have been delineated, providing new insights for exploration in similar surrounding deposits.

     

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