Strike slip fault at a complex vein and vein let migmatitic gneiss Agbonju hill

The location is located along Akwanga – Wamba road and the outcrops is called Agbonju hill. It is an outcrop that summarizes all the basement complexes. The components of these units are gneiss, migmatite, granite gneiss, aplite and pegmatite.

        Quartz–feldspar which occurs as veinlet/veins and basaltic dyke are seen here. Others are faults, folds, joints, and foliation. The mineral compositions are felsic minerals, like quartz, feldspar and mafic minerals like biotite.

        The measurements taken here are as follows

Trend of basaltic dyke

N349^o       –       N168^o

Thickness of basaltic dyke

24 – 30cm

Dip amount of the dyke – 21^o

Direction of dyke

N282 – N101

The composition of the dyke are small amount of quartz and abundant of mafic minerals like biotite, plagioclase

The trend of the quartz vein

N30^o – N210^o­, N15^o – N175^o, N358^o – N178^o

The co-ordinates are;

The G.P.S Reading

Latitude 08^o 56′ 38.9″ N

Longitude08^o 30′ 60″E

        Elevation; 344m

Trend of foliation

N20^o – N200^o, N25^o – N205^o, N47^o – N227^o