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本文介绍了一个与金十字架区古热液系统有关的负剩余重力异常(极小值为—40 g.u.)。该重力异常系由热液蚀变造成的质量局部亏损所引起。重力模拟表明,它是确定热液蚀变岩石的宽度和延深范围以及圈定较强蚀变区的一种有效手段。从本区的金-银工业矿化均与局部硅化带及热液粘土有关来看,上述成果是有特殊意义的。
This article presents a negative residual gravity anomaly associated with the paleo-hydrothermal system in the Gold Cross (minimum -40 g.u.). This gravity anomaly is caused by local mass loss due to hydrothermal alteration. Gravity simulation shows that it is an effective means of determining the width and depth of hydrothermal alteration rocks and delineating strong alteration zones. From the area of gold - silver industrial mineralization are with the local silicidation zone and hydrothermal clay related point of view, the above results are of special significance.