Lineaments in Morocco and their relationship with some ore deposit occurrences
Saadi, M.; Mahmood, A.
published: Jan 1, 1983
ArtNo. ESP136000203003, Price: 19.00 €
Lineaments of deep-seated origin are known to provide an important structural control of ore concentration. They are of particular interest in Morocco in view of the country's complex structural history, complete stratigraphic record and key role in global tectonics. Several groups of linear structures defined mainly by tectonic features were recognized. These structures belong to four sets whose general trends are east-west; north-south; northeast-southwest; northwest-southeast. The trends of linear structures in Morocco are the same as those shown by fractures and lineaments in the rest of Africa, and this identity of trend may be noted even in other parts of the world, suggesting that the linear structures may be attributed to the regmatic fracturing of continental or global dimension. However, the convergence to the southeast of the NW-SE lineaments and the variation in the trend of NE-SW lineaments in Morocco may have some local phenomena at their origin, and, therefore, need explanation. The relationship between lineaments and ore deposit occurrences is best developed in the case of copper deposits. Many NE-SW trending "cupriferous" lineaments traverse the Anti-Atlas and appear to extend northward into the Atlas chain. The other mineralizations that display the relationship are the antimony deposits of the Central Paleozoic Massif and the manganese deposits.