Utilization of spot for mineral exploration,with special reference to Western Africa |
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| Institution: | 1. Department of Earth Sciences, University of Dschang, P.O. Box. 67, Dschang, Cameroon;2. Department of Earth Sciences, University of Yaoundé I, P.O. Box 812, Yaounde, Cameroon;3. Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu (UMT), 21030, Kuala Nerus, Terengganu, Malaysia;4. Institute for Geological and Mining Research, P.O. Box 4110, Yaounde, Cameroon;5. School of Geography and Sustainable Communities, University of Wollongong, Northfields Avenue, Wollongong, NSW, 2522, Australia;6. Centre for Ecosystem Science, University of New South Wales, Sydney, NSW, 2052, Australia |
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| Abstract: | The first SPOT 1 images show that data quality is in fairly good agreement with the SPOT simulations on which the geological community has worked in recent years. SPOT data are particularly useful in mineral exploration for the following reasons :- ground resolution (10 m and 20 m) proves to be very effective at scales such as 1/50,000. It considerably improves the identification of secondary structural features that may be significant for mineral exploration- stereoscopy makes it possible to quantify the dip of bedding, thickness of layers, fault displacement, etc.- acquisition flexibility is an additional advantage in the case of programs requiring multitemporal data.Two examples from Western Africa are described :- Poura, Burkina Faso : gold mining prospect- Bandiagara, Mali : reconnaissance study.SPOT makes it possible to bridge the gap between the regional information provided by Landsat data and that provided by ground of large scale aerial photographic surveys, with the advantage of multispectral images. |
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