| 湖南长城岭-凤凰山地区遥感蚀变信息提取与成矿预测 |
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| 引用本文： | 塔娜,鲍甜甜,冯一鸣,王瑞雪.湖南长城岭-凤凰山地区遥感蚀变信息提取与成矿预测[J].地质找矿论丛,2021,36(3):328-341. |
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| 作者姓名： | 塔娜 鲍甜甜 冯一鸣 王瑞雪 |
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| 作者单位： | 昆明理工大学国土资源工程学院, 昆明 650093 |
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| 基金项目： | 国家重点研发计划项目（编号：2018YFC0603902）资助。 |
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| 摘 要： | 长城岭-凤凰山地区位于湘南多金属矿集区,找矿前景较好。通过Landsat-8遥感影像解译长城岭-凤凰山一带的线-环结构,发现长城岭"Ф"型构造特征;根据实测围岩蚀变光谱特征,选用主成分分析法和比值+主成分分析法,基于landsat-8OLI数据提取了长城岭-凤凰山地区铁染、羟基及硅化蚀变异常信息,基于Worldview-Ⅱ数据提取背首-凤凰山地区铁染蚀变异常信息。经野外验证及多元地学信息对比证实蚀变提取结果的准确性,比值+主成分分析法具有更好的提取效果,高分辨率影像提取该区蚀变信息具有更高的精度,并圈定了成矿远景区。
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| 关 键 词： | Landsat-8数据 Worldview-Ⅱ数据 蚀变信息提取 主成分分析法 比值法 湘南地区 |
| 收稿时间： | 2021/2/4 0:00:00 |
| 修稿时间： | 2021/7/6 0:00:00 |
Remote sensing alteration information extraction from Changchengling-Fenghuangshan area, Hunan province and the metallogenic prediction |
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| TA N,BAO Tiantian,FENG Yiming,WANG Ruixue.Remote sensing alteration information extraction from Changchengling-Fenghuangshan area, Hunan province and the metallogenic prediction[J].Contributions to Geology and Mineral Resources Research,2021,36(3):328-341. |
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| Authors: | TA N BAO Tiantian FENG Yiming WANG Ruixue |
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| Institution: | School of land and resources engineering, Kunming University of science and technology, Kunming 650093, China |
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| Abstract: | Changchengling-Fenghuangshan area is located in the South Hunan ore-deposit-clustered region with prospecting potential. Landsat 8 setillite image of the area is interpreted and the line loop structure delineated. Spectrum of the wall rock alterations are measured and the principle component analysis and rato+principle component analysis are choosed to extract iron stain, hydroxyl and silicification spectral characteristics based on Landsat 8''s OIL data. Iron stain anomaly information of Beishou-Fenhhuangshan area is extracted with Worldview II data. Field check and comparison of multi sourced geological information verify that the above extraction is accurate, the ratio+principle component analysis extraction is better and extraction from the high resolution image more accurate. |
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| Keywords: | data from Landsat 8 data from Worldview II alteration information extraction principle anslysis ratio the South Hunan province |
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