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贵金属矿床的类型一般是由几种亚类组成的,其产出型式是按物理化学地质特征进行分类的,并受热液成因系统控制,它适合于遥感探测。矿床类型之间的变化情况,就遥感数据选择、应用及解释研究方面来说,是种重要的考虑问题。本文将讨论及对比重要的经济型沉积岩型、火山岩型矿床的物理地质特征及遥感特点。阐述了原生与次生蚀变、围岩、线性和环状构造和植被异常等有意义的矿床特征,以及表现的特征光谱、空间分辨率的条件要求。勘查战略与项目比例尺包括:踏勘、区域性普查、详查及矿区勘探对遥感空间分辨率都有具体要求。高光谱图像和达到3-4m空间分辨率图像适合于某些金属矿床的探测及填图目的。
The types of precious metal deposits are generally composed of several sub-categories, the output type is classified according to the physical and chemical geological characteristics, and is controlled by hydrothermal system, which is suitable for remote sensing exploration. Changes in deposit types are an important consideration in the selection, application and interpretation of remote sensing data. This article will discuss and compare the important economic sedimentary rock type, volcanic mineral deposits of the physical and geological characteristics and remote sensing features. Expatiate on some important deposit features such as primary and secondary alteration, wall rock, linear and annular structure and vegetation anomaly, as well as the performance requirements of the characteristic spectrum and spatial resolution. Exploration strategy and project scale include: survey, regional census, detailed investigation and mining exploration of the spatial resolution of remote sensing have specific requirements. Hyperspectral images and 3-4m spatial resolution images are suitable for the detection and mapping purposes of some metal deposits.