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Article: Geological overview.(Burkina Faso)(Brief Article)(Statistical Data Included)
- Article from:
- Mining Journal
- Article date:
- November 17, 2000
CopyrightCOPYRIGHT 2000 Mining Journal Ltd. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The geology of Burkina Faso is usually divided into three distinct sections:
* Archaean crystalline rocks made up of migmatites, leptynites, gneiss and amphibolites formed between 3,000 and 2,700 Ma and affected by the Liberian Orogeny (2,700-2,600 Ma). These form the backbone to the major part of the country;
* Palaeoproterozoic rocks lying within this presumed Archaean framework. These Birimian greenstone belts comprise rocks of both sedimentary and volcanic origin; and
* Upper Precambrian, and Cambrian-Ordovician to Tertiary (Continental Terminal) flat-lying sediments that lie along the southwestern, western and northwestern borders. The ...