| 任广利.多源遥感信息在喀喇昆仑火烧云一带找矿预测中的应用[J].地质与勘探,2017,53(6):1164-1173 |
| 多源遥感信息在喀喇昆仑火烧云一带找矿预测中的应用 |
| Application of Multi-Source Remote Sensing Information to Metallogenic Prediction in the Huoshaoyun Region of Karakorum, Xinjiang |
| 投稿时间：2017-05-11 修订日期：2017-09-14 |
| DOI： |
| 中文关键词: 多源遥感 找矿预测 遥感异常 火烧云铅锌矿 喀喇昆仑 新疆 |
| 英文关键词: multi-source remote sensing, prospecting prediction, remote sensing alteration information anomalies, Huoshaoyun lead - zinc deposit, Karakorum,Xinjiang |
| 基金项目:“十二五”国家科技支撑计划项目（编号2015BAB05B03-01）、中国地质调查局项目（编号DD20160004）、“东昆仑成矿带木孜塔格铅锌铜金多金属矿调查评价区地质矿产调查”（编号：DD20160002）和国家自然科学基金（41502312）联合资助。 |
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| 摘要点击次数: 1806 |
| 全文下载次数: 1879 |
| 中文摘要: |
| 采用多源遥感数据，开展新疆喀喇昆仑萨岔口-火烧云一带铅锌矿找矿预测工作。在对研究区典型矿床不同岩、矿石光谱特征测量的基础上，总结分析其光谱特征。赋矿灰岩具有强CO32-吸收峰、弱Al-OH吸收峰，铅锌矿化体具有CO32-吸收峰、Fe3+吸收峰和Al-OH吸收峰。利用比值分析、密度分割和多特征匹配滤波等方法对ASTER数据有针对性地提取方解石、铁染、Al-OH遥感异常信息，异常呈北西向带状展布与区域地质体展布相吻合。本文以火烧云铅锌矿区为例，建立了区域铅锌矿床以“强方解石、弱Al-OH异常，伴有铁染异常”为特征的遥感找矿标志。结合Worldview-2高分辨率遥感影像特征及构造解译，以及成矿信息综合分析的基础上，对研究区内遥感异常信息进行筛选。利用相似类比理论，圈定五处找矿有利部位。结合异常查证，显示萨岔口、马鞍山、牛郎山、歪头山、金鱼山具有较好的铅锌矿找矿前景。利用多源遥感信息有助于推动喀喇昆仑这类高寒景观区的铅锌找矿工作。 |
| 英文摘要: |
| Prospecting of lead-zinc deposits was conducted based on the ASTER and Worldview-2 remote sensing data in the Sachakou-Huoshaoyun area, Karakorum in Xinjiang. The spectral characteristics of different rocks and ore bodies were analyzed for typical deposits. Spectral analysis of limestone showed two absorption peaks, of which the intense peak is CO32- absorption whereas the weak peak is Al-OH absorption. The spectral curves of lead-zinc mineralization rocks were characterized by CO32-, Al-OH and Fe3+ absorptions. The remote sensing anomalies including calcite, Al-OH, ferrous and ferric iron were extracted from ASTER data. These remote sensing anomalies were distributed in NE-trending belts, consistent with the pattern of known geologic bodies in this area. Based on real data, the exploration model of lead-zinc deposits was established by using the alteration anomalies and geology characteristics in this area. And then, the alteration anomalies from remote sensing data were selected combined with regional geological conditions. Using the analogy comparison theory, five prospecting target areas including Sachaokou, Maanshan, Niulangshan, Jinyushan and Waitoushan were delineated. This work indicates that using multi-source remote sensing information can help promote the lead-zinc ore prospecting in the alpine landscape areas of Karakorum. |
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