The geology of Burkina Faso is dominated by Precambrian rocks of the Guinea Rise, a dome of Archaean rocks, composed largely of migmatites, gneisses and amphibolites, over which lie the greenstone belts of the early Proterozoic age.
The latter are metasediments and metavolcanics assigned largely to the Birimian Supergroup, a suite of rocks in which can also economically significant mineralization occurs.
The Birimian deposits in the southwestern part of the country are typically divided between clastic and volcano-clastic formations.
Limestone, marble, phosphates, pumice and salt are also worked commercially.
Burkina Faso does not extract any significant amount of petroleum and therefore relies on exports.