Quantitative Analysis on the Microfeatures and Composition of Sedimentary Rocks by Image Analysis System
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摘要: 本文介绍了利用ＩＥＬＴＺＴＡＳＡ—ｐｌｕｓ型图像分析仪进行沉积岩微区形貌及成分定量分析的方法，如沉积岩粒度分析、矿物（或组分）定量测量、面孔率及微裂隙的定量测量等，并与其它方法作了比较。研究结果表明，该方法具有快速、精确和统计信息量大等优点，但对于许多岩矿样品来说，灰度自动检测比较困难，而需要结合操作者的地质学知识和经验通过光笔装置进行半自动测量。最后对图像仪在地质学中的应用前景作了分析。Abstract: This paper introduces the application of the Image Analysis System (IAS) for the quantitative determination of microfeatures and composition of sedimentary rocks, such as mineral composition, percent of pores, morphologic features of fracture, and grain-size analysis. The results are compared with those through other methods. The authors agree that the IAS is faster, more accurate and with large statistic information. But, for most samples, the graylevel automatic detection of IAS seems difficult to be carried out. In this case, the semi-automatic determination is conducted by using the light-pen, and the operator must have geologic knowledge and experience. At last, comments are made on the prospect of the IAS used in ology.
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