2D-EULER DECONVOLUTION AND FORWARD MODELING OF GRAVITY DATA OF HOMA-HILLS GEOTHERMAL PROSPECT, KENYA

Abstract

In order to fully assess the potential of Homa Hills Geothermal prospect, the heat source which is one of the main features of a geothermal system had to be located based  on  its  perturbation  on  the  gravity  field.  Ground  gravity  survey  was conducted in an area covering about 76 km2 and the data processed to remove all other  effects  which  are  not  of  geological  interest.  Qualitative  interpretation  was attempted and cross sections drawn across the anomalous areas on the complete Bouguer anomaly map. Quantitative interpretation attempted involved both Euler Deconvolution  and 2‐D  Forward  modelling.  The  parameters obtained  from Euler Deconvolution  were  used  as  the  start  up  parameters  for  2‐D  Forward  modeling. Well clustered Euler solutions were obtained at a shallow depth of approximately 200‐750  m  which  is  consistent  with  the  modeled  shallow  dike  like  intrusive probably of carbonatite origin.