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A map of East Africa showing some of the historically active volcanoes (as red triangles) and the Afar Triangle (shaded at the center), which is a so-called triple junction (or triple point) where three plates are pulling away from one another: the Arabian Plate and two parts of the African Plate—the Nubian and Somali—splitting along the East African Rift Zone Main rift faults, plates ...
The West and Central African Rift System (WCARS) is a rift system composed of two coeval Cretaceous rift sub-systems, the West African Rift sub-system (WAS) and the Central African Rift sub-system (CAS). [1] These are genetically related, but are physically separated and show structural differences. [2] The Logone Birni Basin constitutes a ...
The Great Rift Valley ( Swahili: Bonde la ufa) is a series of contiguous geographic depressions, approximately 7,000 kilometres (4,300 mi) in total length, that runs from Lebanon in Asia to Mozambique in Southeast Africa. [ 1] While the name continues in some usages, it is rarely used in geology as it is considered an imprecise merging of ...
Geography of Africa. Africa is a continent comprising 63 political territories, representing the largest of the great southward projections from the main mass of Earth 's surface. [ 1] Within its regular outline, it comprises an area of 30,368,609 km 2 (11,725,385 sq mi), excluding adjacent islands. Its highest mountain is Kilimanjaro; its ...
Earliest European maps. The earliest cartographic depictions of Africa are found in early world maps . In classical antiquity, Africa (also Libya) was assumed to cover the quarter of the globe south of the Mediterranean, an arrangement that was adhered to in medieval T and O maps . The only part of Africa well known in antiquity was the coast ...
Map of Africa by John Thomson, 1813. Much of the continent is simply labeled "unknown parts". Much of the continent is simply labeled "unknown parts". The map still includes Ptolemy 's Mountains of the Moon , which have since been credited to ranges varying from the Rwenzori to Kilimanjaro to the peaks of Ethiopia at the head of the Blue Nile .
The Nubian Sandstone Aquifer System ( NSAS) is the world's largest known fossil water aquifer system. It is located underground in the Eastern end of the Sahara desert and spans the political boundaries of four countries in north-eastern Africa. [ 1] NSAS covers a land area spanning just over two million km 2, including north-western Sudan ...
The Great Escarpment is a major topographical feature in Africa that consists of steep slopes from the high central Southern African plateau [ 1] downward in the direction of the oceans that surround southern Africa on three sides. [ 2][ 3] While it lies predominantly within the borders of South Africa, in the east the escarpment extends ...