Geology

Mbomo area belongs to the « Massif granitoïde du Haut-Zaïre », which is composed of high grade migmatitic series, typical amoeboïdal granite patches and epimetamorphic greenstone belts The “Tele Belt”, covered by the M'Bomo permits, belongs to a NNW rosary of similar “greenstone” terranes running from Tanzania to Central Africa Republic . The epimetamorphic greenstones extend over several cycles, some older than 2.9 b.y. And some as late as Lindian sediments rest on the north and south flanks of the « Massif ». Southwards the sediments dip into the large Congo Basin.2.0 b.y.
Formations outcropping in the permit are shown in the picture extracted from the Zobia 2/25 reconnaissance map at scale 1/200,000 (BRGM 1975).
Two brown lithologies, in the SW and SE corners of the leases, belong to the Lindian cover formations, dating from Upper Precambrian and made of arkoses, sandstones and claystones becoming carbonaceous at the bottom of the sequence (L2, L4 and L5). The Lindian cover rests over the granite/greenstone complex (massif) . The red and purple features granite (G) and gneisses( ɣ ) ; the contorted orange features the lower Kibalian (KI1) and the two brown tints the upper Kibalian( KI2), darker brown features the banded ironstones (BIF). The typical circumscribed granites crop out inside the belt, these late, tarditectonic, granites with two micas , are shown in red. Recent residual sandy formations rest on lower grounds (ST). Not drawn on this map is a ENE shear zone following the southern edge of the BIF
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Mbomo area belongs to the « Massif granitoïde du Haut-Zaïre », which is composed of high grade migmatitic series, typical amoeboïdal granite patches and epimetamorphic greenstone belts The “Tele Belt”, covered by the M'Bomo permits, belongs to a NNW rosary of similar “greenstone” terranes running from Tanzania to Central Africa Republic . The epimetamorphic greenstones extend over several cycles, some older than 2.9 b.y. And some as late as Lindian sediments rest on the north and south flanks of the « Massif ». Southwards the sediments dip into the large Congo Basin.2.0 b.y. Formations outcropping in the permit are shown in the picture extracted from the Zobia 2/25 reconnaissance map at scale 1/200,000 (BRGM 1975). Two brown lithologies, in the SW and SE corners of the leases, belong to the Lindian cover formations, dating from Upper Precambrian and made of arkoses, sandstones and claystones becoming carbonaceous at the bottom of the sequence (L2, L4 and L5). The Lindian cover rests over the granite/greenstone complex (massif) . The red and purple features granite (G) and gneisses( ɣ ) ; the contorted orange features the lower Kibalian (KI1) and the two brown tints the upper Kibalian( KI2), darker brown features the banded ironstones (BIF). The typical circumscribed granites crop out inside the belt, these late, tarditectonic, granites with two micas , are shown in red. Recent residual sandy formations rest on lower grounds (ST). Not drawn on this map is a ENE shear zone following the southern edge of the BIF

Geology