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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 ...
East Mediterranean Sea: Thrust/Strike-slip: 365 AD (M8.5+); 1303 AD (~8) Honey Lake Fault Zone: Nevada and California, United States: Dextral strike-slip: Active: Hope Fault: 130: South Island, New Zealand: Dextral strike-slip: Active: 1888 North Canterbury (M7.3), 2016 North Canterbury Mw7.8: Humboldt Fault Zone: Nebraska to Kansas, United ...
The lakes in this area (e.g. Lake Tanganyika and Lake Rukwa) are located in highly rifted basins and have an inter-fingering relationship with faults. Many of the lakes are bounded by normal or strike-slip faults. [1] The extension rate for this rift starts at about 6 millimetres per year (0.24 in/year) in the north, and declines to the south. [5]
Lake Turkana is an East African Rift feature. [18] A rift is a weak place in the Earth's crust due to the separation of two tectonic plates, often accompanied by a graben, or trough, in which lake water can collect. The rift began when East Africa, impelled by currents in the mantle, [19] began separating from the rest of Africa, moving to the ...
Gregory Rift in East Africa. The Gregory Rift (Ufa la Gregori, in Swahili) is the eastern branch of the East African Rift fracture system. The rift is being caused by the separation of the Somali Plate from the Nubian Plate, driven by a thermal plume.
These faults are now thought to be inactive at the northern rift valley termination, whereas to the south they are still tectonically and seismically active. [4] [5] The rift floor is cut by a series of smaller en echelon, right-stepping, rift basins of Quaternary to recent age. These basins are about 20 kilometres (12 mi) wide and 60 ...
Many east-west and northeast–southwest strike-slip and thrust faults occur in the High Atlas. Since 1900, there has not been a M w 6.0 or larger earthquake within 500 km (310 mi) of the recent earthquake's epicenter; but nine M w 5.0 and larger events have occurred to its east. [23]
Map of the Dead Sea Transform showing the main fault segments and motion of the Arabian plate relative to the African plate, [1] from GPS data The Dead Sea Transform (DST) fault system, also sometimes referred to as the Dead Sea Rift, is a series of faults that run for about 1,000 km from the Marash triple junction (a junction with the East Anatolian Fault in southeastern Turkey) to the ...