Abstract This paper discusses the applicability and results of simple remote sensing work conducted for exploration for minerals in Nepal. The method of lineament intersection and its density value was used to delineate areas for detailed study as possible sites of mineralization. Lineaments from Landsat imagery, using color composite and black and white prints of different bands, were plotted on a map scale 1:500 000. The map was carefully compared with toposheet and other available geological maps and operational navigation charts to avoid any linear features that were not of geological origin. Lineaments were counted, measured and plotted in octants according to their direction, and a fracture density map of the country was prepared. on the basis of lineament intersection and density value, a map showing “prospective sites” for metal mineralization in Nepal was prepared. These possible sites were later compared with existing maps of geological, geophysical and geochemical anomalies. The result was encouraging because a considerable number of sites deduced by this remote sensing technique showed close resemblance with other anomalies identified by conventional methods. Taking into consideration the terrain and its difficult accessibility--requiring money and time to find anomalies for detailed study by any conventional method--it was decided that a second stage detailed study of some selected sites will be carried out based on remote sensing data. It is too early, however, to evaluate the real benefit of remote sensing techniques for mineral exploration in Nepal. It was found to be helpful in the sense that it provided the potential areas for detailed study and the answer to the questions “where to look” and “how to look”--vital questions in any mineral exploration program of a developing country.
Mineral exploration by remote sensing techniques in Nepal
Advances in Space Research ; 3 , 2 ; 49-54
01.01.1983
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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