On the crustal structure and evolution of southeastern Africa and the adjacent Indian Ocean

In the Indian Ocean, the problem of where to put the island of Madagascar in any continental reconstruction has been particularly enigmatic. Much independent geophysical work has recently been carried out in this area, and it is timely to collate and review the existing data. New ideas concerning the interpretation of the regional gravity field of southeastern Africa are presented, which, together with the other data indicate that Madagascar has probably always been in its present position relative to the African mainland.