The Lake Bosumtwi meteorite impact structure, Ghana—Where is the magnetic source?

Abstract— The Bosumtwi impact structure (Ghana) is a young and well‐preserved structure where a vast amount of information is available to constrain any geophysical model. Previous analysis of the airborne magnetic data and results of numerical simulation of impact predicted a strongly magnetic impact‐melt body underneath the lake. Recent drilling through the structure did not penetrate such an expected impact‐melt rock magnetic source. A new …