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Proceedings Paper

Remote sensing survey applied to synthetic geological mapping in Ivory Coast (West Africa)
Author(s): Jean-Paul Deroin; Claude Delor; Yves Simeon; Bertin Yao
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Paper Abstract

We have used remote sensing as an additional method in 1:200 000-scale reconnaissance mapping of the Ivory Coast. Landsat imagery was chosen for its low cost, and its interest for relatively small-scale work and its synthetic and multispectral properties. This proved perfectly satisfactory, especially in the bush savanna to the north of latitude 7 deg 30'. The imagery was also compared with aeromagnetic survey results. The lithostructural features revealed by MSS can be directly correlated with field observations. 1) Certain clear facies variations (amphibolites or gabbros among acidic rocks, for example) are spectrally well expressed. Conglomerates are commonly distinctive (on the Katiola sheet for example), when they are sufficiently extensive and they form ridges that can be followed several tens of kilometres. 2) The traces of planar structures can, at least locally, be followed and correlated with a regional schistosity. Certain features mappable on images confirm offset across transcurrent structures identified on the ground (N-S transcurrent fault zones, for example). Our experience in Ivory Coast shows that the use of Landsat MSS imagery should systematically be considered for any small- scale studies in which only a small part of the budget can be attributed to remote sensing.

Paper Details

Date Published: 30 December 1994
PDF: 10 pages
Proc. SPIE 2320, Geology from Space, (30 December 1994); doi: 10.1117/12.197286
Show Author Affiliations
Jean-Paul Deroin, BRGM (France)
Claude Delor, BRGM (France)
Yves Simeon, BRGM (France)
Bertin Yao, Ministere des Mines et de l'Energie (Ivory Coast)

Published in SPIE Proceedings Vol. 2320:
Geology from Space
Eugenio Zilioli, Editor(s)

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