|
Madagascar Flood Basalt
The Madagascar flood basalt, also known as the Madagascar large igneous province (LIP), is one of the major magmatic events of the Late Cretaceous. They cover a large area of basaltic and rhyolitic lava flows that erupted during an episode of widespread basaltic volcanism during the Cretaceous period. The flood basalts are characterized by lava flows, Dike (geology), dykes, sill (geology), sills, and intrusive rock, intrusions, and other volcanic features include Volcanic plug, plugs, scoria, and spatter cones. Tholeiitic basalt constitutes the primary rock type.Mahoney, J. J., Saunders, A. D., Storey, M., & Randriamanantenasoa, A. (2008). Geochemistry of the Volcan de l’ Androy Basalt–Rhyolite Complex, Madagascar Cretaceous Igneous Province. Journal of Petrology, 49(6), 1069–1096. doi: 10.1093/petrology/egn018Melluso, L., Morra, V., Brotzu, P., Franciosi, L., Lieberknecht, A., & Bennio, L. (2003). Geochemical provinciality in the Cretaceous basaltic magmatism of Northern Madag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar Flood Basalts
Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, fourth largest island, the List of island countries, second-largest island country, and the List of countries and dependencies by area, 46th largest country overall. Its capital and List of cities in Madagascar, largest city is Antananarivo. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from Africa during the Early Jurassic period, around 180 million years ago, and separated from the Indian subcontinent approximately 90 million years ago. This isolation allowed native plants and animals to evolve in relative seclusion; as a result, Madagascar is a biodiversity hotspot and one of the world's 17 megadiverse countries, with over 90% of its wildlife of Madagascar, wildlife being endemic. The island has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
