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Showing 1 to 17 of 17 for “"East African Rift System"”.
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Thermal and mechanical development of the East African Rift System
… flanks, and volcanoes of the Western and Kenya rift systems have developed along the western and eastern margins of the 1300 km-wide East African plateau. Structural patterns deduced from field, Landsat, and geophysical studies in the Western rift reveal a series of asymmetric basins bounded by …
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Thermal and mechanical development of the East African Rift System
… flanks, and volcanoes of the Western and Kenya rift systems have developed along the western and eastern margins of the 1300 km-wide East African plateau. Structural patterns deduced from field, Landsat, and geophysical studies in the Western rift reveal a series of asymmetric basins bounded by …
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Investigating volcano tectonic interactions in the Natron Rift of the East African Rift System
Continental rifting, like other plate tectonic processes, plays a large role in shaping the Earth's crust. Active rift zones evolve from repeated tectonic and magmatic events including volcanic activity. Through investigations of currently and previously active rifts, scientists have discovered …
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The geochemistry of fluid processes in the eastern branch of the East African Rift System
The East African Rift System is the world's major continental rift. While much geophysical and petrological attention has been paid to it, at least in the eastern branch ("Eastern Rift"), comparatively little research has been carried out into the geochemistry of rift fluids, despite the potential …
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Investigating the Kinematics and Dynamics of Strain Localization in the Northern Western Branch of the East African Rift System
Continental rifts are thought to be formed by repeated episodes of magmatism, reactivation of pre-existing structures, or a combination of both. Continental rifts are evidence of a divergent plate boundary, where tectonic plates are breaking apart. The northern Western Branch of the East African …
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Seismic Studies of the East African Rift System and the Tibetan Plateau: Implications for the Rheology of Lithosphere and the Evolution of Rifts in Continents
Additional evidence for this conclusion comes from my study of eleven intracontinental earthquakes, with magnitudes ranging from 4.9 to 6, which occurred in the mantle beneath the western Himalayan syntaxis, the western Kunlun Mountains, and southern Tibet (near Xigaze). High-resolution seismic …
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Exhumation, rift-flank uplift, and the thermal evolution of the Rwenzori Mountains determined by combined (U-Th)/He and U-Pb thermochronometry
… represent an extreme example of basement rift-flank uplift in the western branch of the East African Rift, a phenomenon common throughout the East African Rift System and characteristic of continental rift systems in general. A thermochronologic study combining (U-Th)/He and U-Pb analysis …
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Magma genesis beneath active continental rifts
<p>The East African Rift System (EARS) and the West Antarctic Rift System (WARS) are two of the largest continental rift systems on Earth, but the processes governing rift dynamics remain controversial. The large volume and distinct chemistry of Cenozoic rift-related lavas, combined with …
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Layered crustal and mantle structure and anisotropy beneath the Afar Depression and Malawi Rift Zone
… been acquired within the vicinity of continental rift zones, the mechanisms responsible for the breakup of stable continental lithosphere are ambiguous. Eastern Africa is host to the largest contemporary rift zone on Earth, and is thus the most prominent site with which to investigate the …
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East African climate variability on different time scales : the Suguta Valley in the African-Asian Monsoon Domain
Motivation | Societal and economic needs of East Africa rely entirely on the availability of water, which is governed by the regular onset and retreat of the rainy seasons. Fluctuations in the amounts of rainfall has tremendous impact causing widespread famine, disease outbreaks and human …
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Examining the past to prepare for the future: Quaternary magma storage in the Main Ethiopian Rift and implications for volcanic hazard and resource potential
… still know relatively little about continental rift volcanism. The Main Ethiopian Rift (MER) is part of the larger East African Rift system, the archetypal example of continental rifting on our planet. Comprehensive geochemical datasets, including new whole-rock, glass (matrix glass and melt …
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A Geodynamic Investigation of Continental Rifting and Mantle Rheology: Madagascar and East African Rift case studies
Continental rifting is an important geodynamic process during which the Earth's outer-most rigid shell undergoes continuous stretching resulting in continental break-up and theformation of new oceanic basins. The East African Rift System, which has two continentalsegments comprising largely of the …
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Topographic evolution of the East African Plateau : a combined study on lava-flow modeling and paleo-topography
The East African Plateau provides a spectacular example of geodynamic plateau uplift, active continental rifting, and associated climatic forcing. It is an integral part of the East African Rift System and has an average elevation of approximately 1,000 m. Its location coincides with a negative …
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Denudation processes in a tectonically active rift on different time scales
Continental rifts are excellent regions where the interplay between extension, the build-up of topography, erosion and sedimentation can be evaluated in the context of landscape evolution. Rift basins also constitute important archives that potentially record the evolution and migration of species …
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Hydrology across scales : sensitivity of East African lakes to climate changes
The lakes of the East African Rift System (EARS) have been intensively studied to better understand the influence of climate change on hydrological systems. The exceptional sensitivity of these rift lakes, however, is both a challenge and an opportunity when trying to reconstruct past climate …
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STRATIGRAPHIC FRAMEWORK AND QUATERNARY PALEOLIMNOLOGY OF THE LAKE TURKANA RIFT, KENYA
… largest desert lake and the largest lake in the Eastern Branch of the East African Rift System. It is situated at ~2 °N at 360 m elevation and is ~250 km long and ~30 km wide with a mean depth of 35 m. The lake surface receives less than 200 mm yr-1 of rainfall during the twice-annual passing of …
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Heterogeneous Strain Distribution & the Effects of High Frequency Climate Change on the Evolution of Early-Stage Rift Systems: Case Studies from Lakes Tanganyika and Malawi (Nyasa), East Africa
… crust through the formation of continental rift basins is a fundamental aspect of plate-tectonics and the first step that ultimately leads to plate-spreading, new continent formation, and the creation of ocean basins. Within continental rifts, processes associated with extensional faulting …