Remote sensing of mineral systems in the Gawler-Curnamona, new HyMap-calibrated ASTER mosaic in South Australia  

Authors / CoAuthors

Thomas, M. | Caccetta, M. | Cudahy, T. | Chopping, R.

Abstract

Significant advances in regional exploration and surface materials mapping are possible using spectral data and specialized remote sensing methods. Benefits for mineral explorers, land-users, government and university researchers are now available using improved ASTER calibration techniques. HyMap and ASTER calibration, processing and standardisation approaches have been produced as part of a large multi agency project to facilitate uptake of these techniques and make them easily integrated with other datasets in a GIS. Collaborative research comprising Geoscience Australia, the Commonwealth Scientific Research Organisation (CSIRO) and state and industry partners, on the world-class Mt Isa mineral province in Queensland was completed in 2008 as a test-case for some new methods. The project demonstrated that geochemical information about mineral deposit 'footprints' and alteration chemistry can be acquired by analysing spectral ground response, particularly in the short-wave infra-red. Key materials that can be identified include clays and magnesium/ iron/ aluminium oxyhydroxides, as well as information on mineral composition, abundance and physicochemistries (including crystallinity) for minerals such as kaolinite, which can be used as a surrogate for identifying transported versus in situ regolith material. The identification and classification of regolith materials and thickness indicators is essential to facilitate on-going exploration in many challenging regions such as South Australia.

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nonGeographicDataset

eCat Id

70056

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• External PublicationAbstract

( Theme )

• remote sensing

( Theme )

• mineral deposits

( Theme )

• geoscience

( Theme )

• satellite imagery

• AU-SA

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_Internal

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2010-01-01T00:00:00

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Creative Commons Attribution 4.0 International Licence    

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geoscientificInformation

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