TITLE:
Tectonics and Mineralisation of Copper in the Ardestan-Kahang Area, Central Iran by Remote Sensing
AUTHORS:
Nazanin Jamalian Daryani, Mehran Arian, Nematllah Rashidnezhad Omran
KEYWORDS:
Lineament, Alteration, Copper, Ardestan-Kahang, Central Iran
JOURNAL NAME:
Open Journal of Geology,
Vol.5 No.4,
April
20,
2015
ABSTRACT: The Ardestan-Kahang area
is located in Urmieh-Dokhtar Magmatic
Arc. This area is situated in Ardestan, Kouhpayeh, Kajan and Zefreh in
1:100,000 geological maps. In order to extract mineralization zones related to
copper mineralization and accessories elements, and also identify Argillic,
Prophylitic, Sericitic and Siliceous alteration with major and minor
lineaments, various kinds of algorithms, band ratio and personal interpolation
have been utilized. The applied methods for extracting alteration consist of
LS-Fit (Least Square Fit), Matched Filtering (MF), Spectral Angle Mapper (SAM)
and Spectral Feature Fitting (SFF), band ratio and visual interpretation.
Comparing different outputs of utilized algorithms illustrates that the best
algorithm for argillc alteration extraction are Matched Filtering (MF) and
Spectral Feature Fitting (SFF), with visual interpretation, and for argillic alterations
the visual interpretation with RGB: 468 that has seen pink-red color. For prophylitic
alterations the utilized algorithms are Matched Filtering (MF). Lineaments have
extracted with visual interpretation on satellite images and it is revealed
that in areas where the fracture density is greater, conditions are more
suitable for copper mineralization.