摘要
通过干旱-半干旱风成砂覆盖区蔡家营铅锌多金属矿315勘探线上地电化学有效性及条件性试验发现:在该景观区及矿床条件下,地电化学测量较常规土壤测量异常显示效果更佳,具有更大的勘查适用性。在测量条件方面:(1)随电提取时间的增加,Pb、Zn等主成矿元素异常显示效果有变好的趋势,埋藏更深的矿体上方逐步出现较明显的地电化学元素异常,但Cd、Cu等元素在不同的提取时间条件下均可取得较为一致的提取效果;(2)使用人工外电场和在提取极土壤中添加井水等提取液可保证地电化学测量获得较好的异常显示效果,是电提取过程的必要条件。
According the research of effectiveness and conditions of geo-electrochemistry( CHIM) in the drought-semiarid aeolian shallow overburden area of Caijiayin Pb-Zn polymetallic mining area,we found that CHIM was more efficient and applicable than traditional soil survey. The results of conditions texts show:(1)With the increase of electric extraction time,the abnormal curve of main ore-forming elements such as Pb and Zn had a tendency to become better. More obvious electrochemical elemental anomalies appear gradually above the buried ore body. But Cd,Cu and other elements could be achieved more consistent extraction effect in different extraction time conditions.(2)The use of artificial external electric field and extractant could ensure geo-electrochemical measurement to obtain better anomalies of indicator elements. Thus these are necessary conditions for geo-electrochemical extraction process.
引文
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