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首页> 外文期刊>Arabian journal of geosciences >Enhancement of hydrothermal alteration zones using the spectral feature fitting method in Rabor area, Kerman, Iran
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Enhancement of hydrothermal alteration zones using the spectral feature fitting method in Rabor area, Kerman, Iran

机译：使用光谱特征拟合方法增强伊朗克尔曼Rabor地区的热液蚀变带

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摘要

Rabor exploration area is in southeast of Kerman province, south of Urumieh-Dokhtar volcanic belt. Since there are many evidences of porphyry copper mineralization in this belt, prospecting and exploration of the intact and undiscovered places, especially the southern part of this belt, seems necessary. In this paper, use has been made of the "spectral feature fitting" (SFF) method to process ASTER satellite data (in Rabor exploratory area as a case study) for the identification and enhancement of hydrothermal alteration zones related to probable porphyry copper mineralization. The method is based on the comparison of absorption features in the image and the reference spectra. The distribution map of the indicator clay minerals, such as kaolinite, muscovite, illite, montmorillonite, alunite, pyrophyllite, dickite, chlorite, and epidote in Rabor exploratory area has been prepared with the help of this method. Identification and enhancement of alteration zones and overlaying Pay-Negin ore index on every individual zone reveal the capability and high efficiency of the SFF method in processing ASTER satellite data and preparing the distribution map of alteration minerals. Field and laboratory studies have shown that main alterations in this area are phyllic and argillic. These studies confirm the results obtained from remote sensing in the area.
机译：Rabor勘探区位于克尔曼省东南部，Urumieh-Dokhtar火山带以南。由于有许多证据表明该带斑岩铜矿化，因此有必要对完整的和未发现的地方，特别是该带的南部地区进行勘探和勘探。在本文中，利用“光谱特征拟合”（SFF）方法处理ASTER卫星数据（以Rabor探索区为例），以识别和增强与可能斑岩铜矿化有关的热液蚀变带。该方法基于图像和参考光谱中吸收特征的比较。借助这种方法，可以绘制指示性粘土矿物（如高岭石，白云母，伊利石，蒙脱石，亚铝石，叶蜡石，地开石，绿泥石和绿石）的分布图。对蚀变带的识别和增强以及在每个区域上覆盖的Pay-Negin矿石指数，揭示了SFF方法在处理ASTER卫星数据和准备蚀变矿物分布图方面的能力和高效率。现场和实验室研究表明，该区域的主要变化是叶面和泥质。这些研究证实了该地区从遥感获得的结果。

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