Abstract
Scalar audiomagnetotelluric surveys over the frequency range 8–5000 Hz were conducted across the Leona batholith (northwest Senegal) along two traverses to map resistivity contrasts associated with the Senegal basin margins. The apparent resistivity data from 12 sites, measured in perpendicular directions, ranged from nearly isotropic to anisotropic with decreasing frequency. Modelling indicates a major change in structure at depth with a pronounced vertical contact. Resistivitie exceeding 20,000 ohm·m are obtained for a dome of igneous nature, contrasting with values of about 2000 ohm·m from the Senegal basin sediments. A conductive layer (50–200 m thick), overlying the more resistive layer, is associated with a fractured contractmetamorphic aureole to the intrusive body.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
