A magnetic survey over the amphibolite-granulite transition in the basement rocks of the Vredefort dome, South Africa; preliminary results.

The Vredefort dome exhibits unique geological and geophysical features compared with other known impact<br>craters, and one of these is a negative magnetic anomaly over the basement rocks near the centre of the crater. In<br>this study we conducted a magnetic survey across the amphibolite-granulite transition.