Constrained modelling of electromagnetic and potential field data to investigate the Walvis Ridge magmatism and its interaction with the Kaoko Belt, Namibia :
2015-07-15 to 2015-08-31
Within the framework of the amphibian MT experiments in 2011, we imaged the electrical conductivity structure of the continental margin and Kaoko Belt in Namibia to study processes related to the breakup of the Atlantic ocean. 2D and 3D inversion models correlate well with lithology, but also show unexpected features: Although cratonic rocks are known to be very resistive, we observe e.g. a zone of high conductivities on the Kango craton. In potential field data the craton boundary is delineable, but we also find e.g. magnetic anomalies in the area. To adequately interpret the conductivity images, we will do additional 2D and 3D potential field and use these results as constraints within the MT inversions. In addition, we need better MT station coverage across the craton boundary. We therefore plan to set up 10-12 MT stations in crucial areas within a short field experiment.

Related People

Person Institute
Ute Weckmann (Coapplicant) GFZ Potsdam
Naser Meqbel (PI) GFZ Potsdam

Used Equipment

Device Amount
Ag/AgCl-Elektroden 30


[18° S, 15° E]