| 张素荣,赵更新,杨俊泉,贺福清,张燕,俞礽安.基于地球化学组合求异的津巴布韦奇马尼马尼地区成矿预测[J].地质找矿论丛,2015,30(S1):172-180 |
| 基于地球化学组合求异的津巴布韦奇马尼马尼地区成矿预测 |
| The geochemical element combination anomaly-based ore prediction in Chimanimani area, Zimbabwe |
| 投稿时间：2015-07-01 修订日期：2015-10-09 |
| DOI：10.6053/j.issn.1001-1412.2015.S1.021 |
| 中文关键词: 成矿预测 地球化学元素 空间定量组合 因子-泛克立格模型 津巴布韦 |
| 英文关键词:metallogenic prediction geochemical elements spatial quantitative combination Factor-Pan kriging model Zimbabwe |
| 基金项目:中国政府援助津巴布韦共和国合作项目"津巴布韦东部Chimanimani地区1∶25万地球化学调查"资助。 |
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| 中文摘要: |
| 如何有效地解释评价异常是化探找矿取得成功的关键,传统的地球化学异常处理方法一般是以单一元素的含量值与背景值的差异来圈定异常,因子-泛克立格求异模型则建立在矿床主成矿期元素共生组合与地球化学异常之间的对应关系。采用因子-泛克立格模型对津巴布韦东部奇马尼马尼地区进行成矿预测,结果表明:奇马尼马尼地区存在7种元素组合,分别对应于不同的岩性组合,F4和F6元素组合异常可作为区内热液成矿指示标志,与东部塔卡金矿套合程度高。利用该模型圈定了5处找矿远景区,Ⅰ号远景区为铜镍金钛铁矿成矿有利区,Ⅱ号远景区具有与塔卡金矿相似的地球化学组合背景,Ⅲ号、Ⅳ号和Ⅴ号远景区则具寻找热液型金铜矿及多金属矿的潜力。 |
| 英文摘要: |
| Effective interpretation of geochemical anomalies is vital to the success of geochemical prospecting. The traditional approach of geochemical anomaly analysis tends generally to delineate anomalies by calculating the difference between single element content values and the background values. Factor-Pan kriging model is applied to ore prediction in Chimanimani area in the east Zimbabwe. The result shows a model of 7 element combinations which correspond to different lithologic combinations occuring in the area. The element combination F4 and F6 are indicator of hydrothermal ore and highly fit to Tarka gold deposit in the east. With the model five potential areas are delineated of which area I is potential for ore of Cu-Ni, Au and Fe-Ti, area II for hydrothermal gold because of the similar geochemical element combinations with Tarka gold deposit, area Ⅲ, ⅣandⅤ for hydrothermal Au-Cu and poly-metals. |
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