Abstract:
The main objective of this research was to use ground magnetic survey to delineate shear zone
and iron ore deposit within the Neoproterozoic rocks of Mutomo-Ikutha area of south eastern
Kenya. Total field magnetic data was recorded by using high resolution proton precision geometric
magnetometer which recorded total components of the ground magnetic anomaly data running
through sixteen traverses. The field data was qualitatively and quantitatively interpreted and the
results gave values for the total component measurements of ground magnetic anomaly that varied
between a minimum negative peak value of about 250 nanoTesla and a maximum of about
1000 nanoTesla. 550 nanoTesla was considered to be threshold of the iron mineralization within
the area. The results indicated that the western part of Mutomo-Ikutha was sheared, faulted and
contained iron ore mineralization trending in the north-south direction. Areas with high anomalous
values were geochemically proven to contain magnetite.
