| 多宝山矿田的地面波谱研究及其在铜矿预测中的应用 |
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| 引用本文：.1997.A study of the ground reflective spectrum in the Duobaoshan orefield and its application to the prospecting for copper deposits[J].Mineral Deposits,16(3):214~224 |
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| 基金项目:“八五”国家科技攻关项目(85-901-01-07) |
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| 中文摘要:根据矿田内岩矿地面波谱与TM图象亮度的线性相关关系，论述了多宝山铜矿田内矿床的地面波谱特征、地空相关模型及TM数据的地空相关分析方法。在此基础上讨论了其在铜矿预测中的应用效果。 |
| 中文关键词:地面波谱 TM数据 铜矿遥感预测 多宝山 |
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| A study of the ground reflective spectrum in the Duobaoshan orefield and its application to the prospecting for copper deposits |
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| Abstract:Altered rocks resulting from copper mineralization and soils and vegetation overlying copper deposits can engender speical ground spectra, which would surely have some manifestations on TM image. Therefore, the ground spectra of copper deposits must have something to do with the brightness of TM image, The authors consider that the ground spectrum reflectivity is in linear correlation with the brightness of TM image. Reflective spectra of various copper deposits and rocks in the Duobaoshan orefield located in a NW-trending tectonic zone in the Da Hinggan Ling fold system were studied by means of RE-II and IRIS field wave spectrometers. It is pointed out that the reflectivities of the Duobaoshan copper deposits as well as altered rocks are related to the types of copper deposits in Duobaoshan area. The porphyry copper deposit shows clear special spectra at 0.45 pm and l.90 ~ 2.17 pm, whereas the skarn copper deposit has very low reflectivity and exhibits clear spectra of water and copper ions, with the former being at 0.95 um, 1.40 um, 1.90 pm and 2.20 um, while the latter being at 0.80～0.90 pm. Based on the ground spectrum study of the Duobaoshan orefield, the authors have established two ground spectrum models and nine ground-aerial correlation patterns, and transformed the TM image of Duobaoshan area into the ground-aerial correlation image. The present paper deals with the effects of applying ground-aerial correlation image to the prognosis of coppcr dcposits in Duobaoshan arca. Through the analysis of the correlation image of this area, some image anomalies related to copper mineralizarion were detected on the ground-aerial correlation image of Duobaoshan area. It is hence concluded that correlation analysis has its special advantages in locating copper mineralization and predicting target areas. |
| keywords:ground reflective spectrum, TM data, remote-sensing prognosis of copper deposit, Duobaoshan |
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