TITLE:
Modelling and Inversion of Ground Magnetic and Electromagnetic Data for Delineation of Subsurface Structures at Siloam Hot Spring in the Soutpansberg Basin
AUTHORS:
Peter K. Nyabeze, Oswald Gwavava
KEYWORDS:
Electromagnetic, Hot Spring, Magnetic, Modelling, Susceptibility
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.11,
November
21,
2018
ABSTRACT: Geophysical surveys utilising magnetic and electromagnetic techniques were
carried out at the Siloam hot spring. The spring is in the Soutpansberg Basin
in the northern part of South Africa. The research was to investigate groundwater
bearing structures at the hot spring. Magnetic survey results showed
that the spring occurs between two north dipping dykes. The two dykes could
be faulted segments of a single dyke or sill. Magnetic susceptibility results
highlighted the presence of metamorphic and volcanic rocks. Electromagnetic
survey results showed that the hot spring was within a roughly east to west
trending, zone with high electrical conductivity values. Based on the survey
results, water is exploiting fractures in the dyke or sill.