福建省丁家山铅锌矿床地球物理特征及深部找矿前景

    The geophysical characteristics and prospecting potential of Dingjiashan Pb-Zn deposit in Fujian province

    • 摘要: 福建省梅仙地区丁家山矿段铅锌矿近年来做过大量地球物理工作,本文以不同钻孔中矿石标本磁性数据为基础,建立矿床矿石物性参数与测井数据关系,通过井中三分量磁测、井中激电方式圈定丁家山铅锌矿的磁异常带。丁家山铅锌矿矿体岩层向西缓倾,异常段是由于磁铁矿、磁黄铁矿(化)所致,而钻孔西北方向圈定的三个异常带中异常区为铅锌矿所致,与实际地质情况相吻合。因此本地球物理方法在判断和描述研究区深部发育的铅锌矿规模、空间分布,具有较好的应用价值,为矿山存在的深部矿床勘探提供依据。

       

      Abstract: In recent years,a large number of geophsical works has been done in Lead and Zinc mine of Dingjiashan ore block,Meixian area in Fujian Province.Based on the ore samples magnetic data in different boreholes,we set up the relationship between ore properties parameter and logging data,and delineated magnetic anomaly zones through tri-component magnetic survey and IP method in the study area.The results show ore bed gently inclined westward,abnormal ore block were caused by magnetite and pyrrhotite(mineralization),while the delineated three anomalous zones in the WN of borehole was caused by the lead and zinc deposit,which coincided with the actual geological conditions.Therefore,determining and describing the lead and zinc ore block scale and spatial distribution on the basis of geophysical methods,we can see that the methods has good applicability and parcticability,which can provide evidence to look for the deep deposit in exploration.

       

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