It
deals with high and low land altitude. The Southern land scope of the Benue trough. These plains are believed to be of tectonic
origin other parts of the state are composed of undulation, low lands and a
network of hill, developed on granites, migmatites, pegmatites and number of
worn volcanic cones. Most pat of the state that lie within the Benue valley is composed of sandstones. However
around
the silt bearing district of Awe, Azara and Bomanda are associated with
anticline axis along which silt bearing beds within the synclines approach the
surfaces.
The high land areas of the state found
towards the North particularly in Wamba, Akwanga area and Nassarawa –Eggon
rolling bills for instance rise an average height of about 1200m. The Maloney
hills in Keffi are of historical significance