Studying the Alternations of Iron Ore by Remote Sensing of Kamoo Region (Mimeh, Isfahan)
Subject Areas :jahangir esmaeili 1 , Ahmad Khakzad 2 , Mehrdad Behzadi 3 , Mansour Vothoughi Abedi 4
1 - Faculty Member of Islamic Azad University
2 - عضو هیات علمی گروه زمین شناسی، دانشگاه آزاد اسلامی، واحد تهران شمال، تهران، ایران
3 - عضو هیات علمی گروه زمین شناسی، دانشگاه آزاد اسلامی، واحد علوم تحقیقات، تهران، ایران
4 - عضو هیات علمی گروه زمینشناسی دانشگاه شهید بهشتی تهران.
Keywords: ASTER, Hematite, Argilite, Ore depasite, Remout sensing,
Abstract :
It is one of the prone areas where following the explorations of metal indices such as iron in the northern east of Kamoo district (Maimeh, Isfahan) is located in the in longitude E51,16,58 and latitude N33,40,16. Dividing the structural ones, the studied area has been located in the central Iran and in Makmaei Uromieh- Dokhtar zone. This range has been located in a scene ETM No. 164 - 37 and ASTER linear bad prediction satellite image No. AST_L1A:002:ASTL1A 0108220733380109011021. Such measured images in different band combinations will be used for extracting the geological structures and types of alterations (iron oxide, Argillite and Carbonate) and for detecting different stones and minerals of the ground, a spectrum range of 1.5 to 2.5 μ is very important. This range includes short to average IR range covering six linear band predictions (SWTR bands). According to results of XRD analysis, Albite, andradite, chlorite, gibbsite and Moscuit minerals and silica alterations were also dissociated. On the other side, to use spectral reflectance curves of such minerals in USGSENVI spectral library for spectral analysis, it is necessary to resample the curves to the spectral range of ASTER. Linear Band Prediction methods, LS-Fit, Matched Filtering and BandRATIO used of ASTER images for all minerals and iron alterations and for iron oxides there were also used visual interpretations and ETM images were used in band combination of RGB:531. The resalts identified in the remote sensing study in the aera (Kamoo) identide as follows : Alteration of iron (Gotit, Hematit and jarosit and limotit), alteration of argilic (maolinite, mottmoriolotit, ilite and halozite), carbonate (calcite and dolomite)
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