| 杨 雪.新疆梧南地区航磁异常特征分析及找矿标志研究[J].地质与勘探,2015,51(6):1033-1040 |
| 新疆梧南地区航磁异常特征分析及找矿标志研究 |
| Aeromagnetic anomaly characteristics and prospecting indicators in the Wunan area, Xinjiang |
| 投稿时间：2015-10-02 修订日期：2015-10-24 |
| DOI： |
| 中文关键词: 航磁异常 矽卡岩型磁铁矿 地球物理特征 找矿标志 |
| 英文关键词: Aeromagnetic anomaly, Skarn magnetic Iron ore, geophysical characteristics, Prospecting indications |
| 基金项目:国家973项目《攀枝花钒钛磁铁矿物探找矿研究示范》（项目编码2002031312002）、中国地质调查局地质调查工作项目《全国物探化探遥感自然重砂综合信息评价（航遥中心）》（项目编码1212011121038）资助 |
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| 全文下载次数: 2007 |
| 中文摘要: |
| 梧南航磁异常区位于新疆维吾尔自治区鄯善县，该异常区于1978年发现两条近于平行的正磁异常带沿北西西向展布，航磁异常特征非常明显。笔者通过对梧南地区地质构造特征、成矿环境、岩（矿）石物性及航磁特征等进行综合分析、研究，探讨了梧南地区航磁异常引起原因，进而推断两条沿北西西向展布的航磁异常带上，叠加的几处局部升高强磁异常可能与隐伏的磁性体有关。鉴于此，笔者以异常带上的新C-1978-127航磁异常为例，对航磁异常进行定性分析，并利用2.5D拟合技术进行定量拟合计算，推断航磁局部强磁异常可能与隐伏的磁铁矿有关。依据区内地质—地球物理特征、航磁定性分析及定量计算结果，建立了该区地质—地球物理找矿标识，并进行了找矿远景分析，认为区内新C-1978-127、127-1、127-2、127-3、127-4等5处局部强磁异常找矿潜力较大，应予以重视。 |
| 英文摘要: |
| The Wunan aeromagnetic anomaly area is located in the Shanshan county, Xinjiang. Two nearly parallel aeromagnetic anomaly belts which stretch along NWW direction were found in1978. The aeromagnetic anomaly characteristics are prominent. Based on the study of geological structure, metallogenic setting, physical properties and aeromagnetic anomaly features, we analyze the cause of these aeromagnetic anomalies. Taking the aeromagnetic anomaly Xin C-1978-127’ as an example, the results of 2.5D quantitative fitting suggest that the local aeromagnetic anomalies are caused by the hidden magnetic iron ore. Then we establish the indicators of geological and geophysical prospecting, and estimate the prospect of ore-search in this area. We think that there are five places with intense magnetic anomalies, i.e. Xin C-1978-127, 127-1, 127-2, 127-3 and 127-4, have large potential of prospecting. |
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