 These outcrop in the Ankarana and Bemaraha Massifs, Namoroka, Analamerana, and Ankara Plateau (172-162 million years in age), and the Mahafaly Plateau (54-38 million years in age) respectively.Flood basalts that ring Madagascar include the Mahajanga lavas (87.6 to 88.5 million years in age), the Toliara lavas and Ejeda-Bekily dike swarm (84.5-84.8 million years old), and the Androy lava flow (84.4 million years in age).These igneous rocks were emplaced during the interval when India and Madagascar were together (91 million years ago), and when apart (84 million years ago).