Geology

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FEDERAL CAPITAL ABUJA
PHYSICAL SETTING
PEOPLE, POPULATION AND SETTLEMENT
SOCIAL INFRASTRUCTURE
PROSPECT FOR THE FUTURE
NATURAL RESOURCES AND DEVELOPMENT

PHYSICAL SETTING Geology: The FCT is almost predominantly underlain by high grade metamorphic and igneous rocks of precambrian age. | National Assembly Complex |
Generally trending NNESSW, these rocks consist of gneiss, migmatites and granites. A schist belt outcrops along the eastern margin of the area. The belt broadens southwards and attains a maximum development to the southeastern sector of the area where the topography is rugged and the relief is high. In general, the rocks are highly sheared (Kogbe, 1978). The rocks of the area can be divided into five major groups, as follows: Metamorphosed Supracrustal (Exogenetic) Rocks: Mica Schist (sh), Marble (m), Amphibolite and Amphibole Schist (a), FineMedium Grained Gnesis.Migmatitic Complex: Migmatite (mi), Migmatitic Gneiss (mg), Granite Gneiss (gg), Porphyroblastic GraniteGneiss (pg), Leucocratic GraniteGneiss (lg) . Intrusive GraniteCoarse Grained Granite (eg) . Minor Intrusions: Rhyolites (ry), QuartzFeldspar Porphyry (py), Daca titea and Anddesites (an), Dolerites and Basalts (b) .Other Formations: Quartzite (qz), Pegmatite (p), Quartz vein (q)Relief: The lowest elevation in the Federal Capital territory is found in the extreme southwest where the flood plain of the river | Abuja City Gate |
Guraja is at an ele vation of about 70m above sea level. From there, the land rises irregularly eastwards, northwards and northwestwards. The highest part of the territory is in the northeast where there are many peaks over 760m above sea level. Hills occur either as clusters or form long ranges. The most prominent of these include the Gawa range in the northeast, the Gurfata range southwest of Suleja, the BwariAso range in the northeast, the Idon Kasa range north west of Kuje and the Wuna range north of Gwagwalada. Elsewhere in the territory,

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