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Russian Geology and Geophysics

2007 year, number 9

Enhancement of edges of Sidi Chennane phosphate

Saad Bakkali
Earth Sciences Department, Faculty of Sciences and Techniques, Tangier, Morocco
Keywords: Geophysical surveys; resistivity; phosphate; feature; sunshading; Morocco
Pages: 775-781


Sunshading is a powerful tool for the enhancement of edges in images. Given the azimuth and elevation of a source illumination, it calculates the reflectance from a surface which is composed of the data to be interpreted. It is a standard tool used in the interpretation of geophysical potential field data. In the great Oulad Abdoun phosphate basin, inclusions of sterile hardpan - so-called