Great Rift Valley support its current biological variety. The southern section of the Rift Valley includes Lake Malawi, the third-deepest freshwater body in the world, reaching in depth and separating the Nyassa plateau of Northern Mozambique from Malawi; it ends in the Zambezi valley. Great Rift Valley The Great Rift Valley is a continuous geographic trench, approximately in length, that runs from Lebanon's Beqaa Valley in Asia to Mozambique in Southeastern Africa. The name continues in some usages, although it is today considered geologically imprecise as it combines features that are today regarded as separate, although related, rift and fault systems. Today, the
Geology of the Antarctic Peninsula Formation (KGF). This volcanic sequence is a 215 m thick group of rhyolite-dacite lavas, ignimbrites, tuffs, and agglomerates. The acidic dikes and sills which intrude the MFF and TPG sediments may be due to the KGF stratovolcano. The acidic volcanism that created the KGF sequence is associated with plutonic intrusions during the Middle Jurassic-Early Cretaceous in the northern Antarctic Peninsula. These plutonic intrusions could have been caused by the doming and rifting in the continental margin of Gondwana at the onset of oceanic slab subduction. The outer magmatic arc, of which the South Shetland Islands are a part, is a