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کنفرانس بین المللی علوم زمین - تهران
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • (extraction of iron alterations from aster swir and etm+ data from esfordi 1:100000 sheet (central iran

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 901
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     satellite images with the electro-magnetic spectrum range widely have been used in geology and mineral exploration. in this regard, geology structures of study area, lithology and alteration types can be considered as the most important extractable layers from the satellite images. esfordi 1:100000 sheet is located in central iran structural zone, consists of bafq iron ore district. there are many known iron ores in this sheet, such as chadormalu, choghart, seh-chahoon, mishdowan, zaghia and north anomaly. the aim of this research is processing the etm+ and aster satellite images and extracted alterations associated with iron ores, for identification of new prospects. for this purpose, alteration zones associated with iron mineralization (hematite, limonite, jarosite and goethite) were extracted by some methods, e.g. band ratio (2/1 and 3/1), visual interpretation (rgb: 531,741, 742 and 754), pca (principal component analysis) and ari. the pca method in comparison with the other methods did not provide a good result. however, these methods were compared and their common areas were proposed as prospects, where the north to north-east, central and north western areas were introduced that by field checking they would confirm conclusively.

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