3.THE STUDY AREA:
3.1 Location:
Ngara district is located between longitude 30o
15’E and latitude 2o
10’ and 3o
0’S. The
altitude ranges between 1,320m (the level of River Kagera) to about mean sea level.
3.2 Geology:
The district is predominated by pre-cambrian rocks of the Karagwe - Ankolean
system. The main rock types are phillites, phllitic shales and mixed quartzites. Many
parts have remnants of old landscapes which are characterised by laterites caps. Some
parts have few granitic rocks.