Regional magnetic lithologies and structures as controls on porphyry copper deposits: evidence from Iran
Hassan Kheyrollahi 1 Firouz Alinia 1 3 Abdolreza Ghods 2
+ Author Affiliations
- Author Affiliations
1 Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, 158754413, Iran.
2 Department of Earth Sciences, Institute for Advanced Studies in Basic Sciences, Zanjan, 451951159, Iran.
3 Corresponding author. Email: aliniaf@aut.ac.ir
Exploration Geophysics 49(1) 98-110 https://doi.org/10.1071/EG16042
Submitted: 11 April 2016 Accepted: 3 September 2016 Published: 28 October 2016
Abstract
Tertiary magmatic activities in Iran are the main magmatic events responsible for porphyry copper deposit occurrences. The Urumieh-Dokhtar magmatic belt (UDMB), the Ahar-Arasbaran, the Taleghan-Tarom, the Kavir-Sabzevar zones, and the Lut Block contain the greatest volume of the Tertiary magmatic rocks in Iran. Many porphyry copper deposit indications have been found, especially in the south-east and north-west of the UDMB in the Kerman and the Ahar-Arasbaran zones, respectively. New porphyry copper mineralisation found in central parts of the UDMB and the East Iran magmatic belt (the Lut Block), in Tertiary rocks, have made these areas more interesting for porphyry copper prospecting, where before that they were not noteworthy. In this paper, we used the combination of upward continuation and edge enhancement filters to find and predict the pattern of distribution of porphyry copper deposits in the Tertiary magmatic belts. The results show the high correlation between magnetic lithologies/structures and porphyry copper deposits at a regional scale and new attractive areas have been proposed for prospecting based on deep geophysical features.
Key words: airborne magnetics, exploration, porphyry copper, Urumieh-Dokhtar magmatic belt.
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