Laukamp, Carsten, Cudahy, Tom, Cleverley, James, and Oliver, Nick (2009) Alteration zoning of igneous complexes in the Eastern Fold Belt of the Mount Isa Inlier, Australia. In: Proceedings of the 10th Biennial Meeting of the the SGA 2009 (2) pp. 638-640. From: Smart Science for Exploration and Mining: 10th Biennial Meeting of the SGA 2009, 17-20 August 2009, Townsville, QLD, Australia.

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Abstract

Hyperspectral remote sensing data from the Eastern Fold Belt (Mount Isa Inlier, Australia) were compared with petrographic and geochemical studies to map spatial extension and compositional variations of Proterozoic granitoids as well as hydrothermal alteration patterns in surrounding metasedimentary rocks. Detailed spatial analysis of the spectral data shows an almost circular alteration zoning in the Mallee Gap Granite, which was emplaced during a late phase of the Mesoproterozoic Williams event. A combination of hyperspectral images, such as white mica, kaolin and MgOH products, can be used to map the alteration zoning. The formation of the endoskarn is presumably related to autometasomatic alteration during a late phase of the emplacement. The intrusion of the Mallee Gap Granite has a major local control on the hydrothermal alteration of this area. Hyperspectral data give implications on the influence of single intrusions on the Mesoproterozoic hydrothermal alteration of the Eastern Fold Belt, which was concurrent with the formation of major IOCGs in this area.

Item ID:	27722
Item Type:	Conference Item (Research - E1)
ISBN:	978-0-9805-5868-5
Keywords:	Mount Isa Inlier, Williams Naraku Batholith, hydrothermal alteration, IOCG
Related URLs:	Organisation
Date Deposited:	18 Jun 2013 05:36
FoR Codes:	04 EARTH SCIENCES > 0402 Geochemistry > 040299 Geochemistry not elsewhere classified @ 100%
SEO Codes:	84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840102 Copper Ore Exploration @ 33% 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840104 Iron Ore Exploration @ 33% 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840105 Precious (Noble) Metal Ore Exploration @ 34%
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