ABSTRACT:

Gravity anomalies in the vicinity ol the Namaqua and Damara tectonic provinces in Southern Africa posses extensive. pair of linear negative and positive ano.malies straddling one another on the basis of which the structural boundary can be mapped: Gravity modelling of ;the boundary indicates considerable tlilrusting of about .50 km of Damara belt over the Namaqua block.· Plate tectonic evolution is one of the ways in which the. juxtaposition of these structural blocks at varying age and thickness can be understood.