Deep Resistivity Tomographic Imaging of The Qualibou Caldera, Saint Lucia
Author(s)
Morgan, Frank Dale
Vichabian, Yervant
Sogade, John
Date Issued
2003
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;2003-12
Abstract
The Qualibou Caldera has been studied since the 1970’s for possible development of
geothermal power generation. In 1974 dipole-dipole resistivity measurements were
performed in the area. The apparent resistivity data was plotted as contours and a single
line running through Sulphur Springs was interpreted by using forward models to
generate a best fit model. The data is reanalyzed using a robust 2D inversion method.
The result shows a resistive body beneath Sulphur Springs, the presence of which has
been debated for nearly thirty years. The data from all 2D tomograms is interpolated into
3D, which generates images showing conductive features reminiscent of hydrothermal
convection plumes.
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