THE STRUCTURAL AND STRATIGRAPHIC DEVELOPMENT OF SEDIMENTARY BASINS IN CAMEROON CASE STUDY: MAMFE SEDIMENTARY BASIN
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This work will be centered around the structural and stratigraphic development of the Mamfe sedimentary basin. The main structures are basement –involved and detached fault and simple symmetrical fold with NE-SW trend. The basin measures 130 km in length and the widest part is about 60 km and a maximum area of 3200 km2. The maximum sediment thickness is estimated at 4–7 km and the sedimentary infill includes lower alluvial fans to fluvial basal conglomerate and conglomeratic sandstone, a middle alternating (cyclic) aqueous to anoxic deep lake bottom black shale and limestone unit and an upper fluvial to transitional deltaic nearshore conglomeratic sandstone unit. The Ostracod fauna from the shale are very similar to the coeval fauna from adjacent Benue trough. The reported fauna has no bio stratigraphic significance because of their uncertain age, low diversity, and cosmopolitan distribution during the early Cretaceous. Over 30 salt springs exist across the Mamfe basin with the most concentrated yielding 79 g/L of high quality halite. Several mineral indices (including diamond) have been identify and the geological condition favour the occurrences of hydrocarbon.1.To саrrу out thе ѕtudу, fіеld surveys, раrtісіраnt’ѕ observations, оn-thе-ѕроt аррrаіѕаlѕ and соnѕultаtіоn of dосumеntеd іnfоrmаtіоn соnѕtіtutеd thе mаіn ѕоurсеѕ of dаtа. Thе rеѕеаrсh and ѕаmрlе collection wаѕ dоnе in thе Mamfe sedimentary basin. Thе findings revealed that, the rocks of this basin can best be sub-divided into three members: a lower alluvial fan conglomerate to a fluvial channel cross bedded conglomeratic sandstone, a middle predominantly repeated sequences of alternating black shales, limestones, sandstone and evaporates (lacustrine), and another fluvial sandstone unit at the top of the basin.
Keywords: Structural, Stratigraphy, Hydrogeological Aspect, Economic Geology, Mamfe Basin
FURTHER READING; GEOLOGY PROJECT TOPICS WITH MATERIALS