نوع مقاله : یادداشت فنی
نویسندگان
1 دانشکده مهندسی معدن، دانشگاه صنعتی سهند تبریز رئیس بخش تحقیق و توسعه گروه سرمایه گذاری فولاد گستر کوثر تبریز
2 مدیر دفتر فنی گروه صنعتی توانگران سهند تبریز
3 مدیر دفتر فنی گروه سرمایه گذاری فولادگسترکوثر
4 مدیر بخش اکتشافات گروه سرمایه گذاری فولادگسترکوثر
5 مشاور اکتشافات گروه سرمایه گذاری فولادگسترکوثر
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study aims to use the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) remote sensing data to identify promising areas and design a targeted preliminary survey in the area of Karijgan located in Khosuf-Birjand. Therefore, for this purpose, first necessary pre-processing such as atmospheric and topographic corrections were applied on the data. Then, from conventional processing methods on multispectral data, including band ratio, principal component analysis (PCA) and its improved type called selective component analysis method (CROSTA), promising areas were identified. In this case, by using the band ratio method, index areas were identified to iron oxides, silica, carbonate, chlorite and epidote, alunite, kaolinite and pyrophyllite, sericite, muscovite, illite and smectite. Also, with the CROSTA method, various types of main alterations (propylitic, argillic and phyllic) were determined. Finally, by combining the above results, promising areas were identified for preliminary surveys. A check field and sampling of the identified areas was done to validate the processing results. The results of the samples analysis by ICP-OES and X-ray diffraction (XRD) showed good agreement and accuracy with the results obtained from the remote sensing processing of the Karijgan area.
کلیدواژه‌ها [English]
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