<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates"^^ . "The African lithospheric continent has an extended history over 3.8 Ga and is tectonically active since more than 2.9 Ga. Ever since the topography of that continent was changing under influences of a series of endogenic (tectonic) and exogenic (surface) processes. Generally the earth’s topography has major influences on the planet, examples include but are not limited to species distribution, forest succession, erosion, sedimentation, fluvial systems and climate. The topographic changes are accompanied by rock exhumations in either way of endogenic forces or as response to exogenic processes. These exhumation events could be traced by low temperature thermochronology (LTT) techniques. The LTT techniques date the rock passing through a certain isotherm (closure temperature) and are used to quantify the cooling rates. The closure temperature is function of the applied LTT technique and mineral type. Combining these cooling ages and LTT data with the time-temperature (t-T) modelling enables visualizing and quantifying the rock movement through the upper crust. Therefore, these combinations were used to compare and reconstruct the topographic changes in key areas dominated by various geologic environments as response to different magnitudes from multiple landscaping processes in the African continent. Furthermore, the ability of LTT to answer difficult questions related to landscaping processes (e.g., landslide detection and quantifying and the endogenic-exogenic processes relationship) was also tested.\r\nComparing and reconstructing rift flanks uplifted areas (the Albertine Rift; the Rwenzori Mountains and the Gulf of Suez; the Samra Mountain area) on an old craton revealed a relatively long cycle of life. The non-uniform uplift through fault-bounded blocks was the dominant mechanism of response for all the induced far-field continental scale tectonics and surface processes. Only a uniform uplift was demonstrative during the rifting event. The thermochronological record of the Samra area has started earlier with the East African Orogeny (EAO) plutonism and accretion. Afterwards, both areas (the Rwenzoris and the Samra) were affected by the post orogenic erosional event. Shortly after, each area of them was affected differentially by a series of far-field tectonic events. Then, the rift started to activate affecting the whole areas with corresponding uplift. While the Gulf of Suez was nearly deactivated by the movement along the Dead Sea transform fault at mid-Miocene. The movement along\r\nthe footwall of Bwamba fault caused additional\r\nuplift to the Rwenzoris at the Pliocene.\r\nOn the other hand, comparing and reconstructing\r\nvolcanic islands (Fuerteventura\r\nand La Gomera; Canary Islands) on passive\r\nmargin revealed a relatively short cycle\r\nof life. That cycle started by emerging, followed\r\nby formation of the shield stage with\r\nadding a huge amount of magmatic materials\r\nforming a highly topographic island\r\n(Fuerteventura; ~20 Ma, La Gomera; ~10\r\nMa). Afterwards, the topography destruction\r\nstarts with landsliding (Fuerteventura;\r\n≤20 Ma, La Gomera; ~7 Ma) when suitable\r\ntopographic and climatic conditions, among\r\nothers, were dominated. Then the volcanic\r\nisland experience other cycle, starting with\r\nconstructing high topography by feeding with\r\nnew magmatic materials till the hot spot related\r\nmagmatic activities transfer to other\r\nregions. That activity shift was recorded by\r\na lateral movement of the Canary plume\r\nmaterials beneath northwest Africa to west\r\nthe Mediterranean Sea produced a track\r\nof intraplate volcanism through its course.\r\nFurthermore, LTT techniques were\r\nable to detect, differentiate, and quantify\r\ndifferent landscaping events (including\r\nlandslides) with various magnitudes\r\nin different geologic environments.\r\n- In rifted regions; the Rwenzori Mountains\r\nhave experienced 4 rapid cooling/exhumation\r\nevents. 1) the Silurian-Devonian (420-\r\n390 Ma) event associated with ~3.5 (1.5) km\r\nof rock uplift as response to the post Pan-African\r\norogeny deep erosional event. 2) The\r\nTriassic (240-220 Ma) event that caused ~3.0\r\nkm of rock uplift associated with rapid cooling\r\nand a major erosional event at the end of the\r\nKaroo sedimentary regime. 3) The Eocene-\r\nMiocene (52-10 Ma) event resulted in an average\r\nrock uplift of ~3.0 (0.2) km, the Early\r\nEocene tectonic events were associated\r\nwith India drifting afterwards the Eastern Rift\r\nactivity was started. 4) The Pliocene-Pleistocene\r\nevent (3-2.5 Ma) caused ~≤2.0 km of\r\nrock uplift along the footwall of Bwamba fault.\r\nThe last two exhumation events with\r\n~5 km of corresponding rock uplift produced\r\nthe exceptionally high Rwenzori\r\nMountains in the EARS extensional regime\r\nas a rift flank within two stages. The\r\nlatter movement caused the tilt uplifting\r\nin the western flank of the mountains.\r\nWhile, the Samra Mountain area has\r\nexperienced 5 rapid cooling/exhumation\r\nevents. 1) The Neoproterozoic (775-640 Ma)\r\nevent caused ~5.8 (0.1) km of rock uplift as\r\na response to the accretion and plutonism\r\nduring the EAO. 2) The Cambrian-Devonian\r\n(507-457 Ma) event causing ~5.6 (0.2) km of rock uplift as response to the post-EAO erosional event. 3) The Carboniferous-Permian (390-230 Ma) event resulted in ~4.2 (1.6) km of rock uplift as response to the Hercynian tectonic event. 4) The Jurassic-Cretaceous (170-70 Ma) event resulted in ~2.9 (0.5) km of rock uplift as a response to the Gondwana breakup. 5) The Oligocene-Miocene (27-22 Ma) event causing rock uplift of ~1.3 (0.3) km as response to the rift initiation. Additional reheating event was reported in the time span extending between the uplift associated with the Gulf of Suez and the prior cooling event causing an average subsidence of ~0.6 (0.3) km.\r\n- The Albertine rift flanks uplift is double the Gulf of Suez related flanks uplift which suggests an additional heat component during the Albertine rift formation. That heat component resulted from being the corresponding mantle plume directly beneath the EARS and more than 2000 Km away from the Gulf of Suez (Afar plume).\r\n- In volcanic islands; Fuerteventura Island has experienced two rapid cooling/exhumation events; one has started ~20 Ma with ~2.7 (0.5) km of corresponding rock uplift that caused the onset of the Fuerteventura landslide. The other has been initiated ~7 Ma with ~2.3 (0.2) km of corresponding rock uplift forming the doming stage on the western part of Fuerteventura ~5 Ma. Finally, these domes were eroded to nowadays surfaces. La Gomera Island also has experienced two rapid cooling/exhumation events; the first event has started between ~10 and 7 Ma with corresponding ~2.7 (0.2) km of rock uplift causing the onset of the La Gomera landslide. The second rapid cooling event occurred by ~4 Ma resulting in ~2 km of rock uplift. Finally, this topography was eroded to reduce elevation to nowadays surfaces"^^ . "2016" . . . . . . . "Sherif Elshahat Elsayed"^^ . "Mansour"^^ . "Sherif Elshahat Elsayed Mansour"^^ . . . . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (PDF)"^^ . . . "Sherif-Dissertation-2015-16.pdf"^^ . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Long-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #20122 \n\nLong-term topographic evolution of the African plate, causes and consequences for surrounding lithospheric plates\n\n" . "text/html" . . . "500 Naturwissenschaften und Mathematik"@de . "500 Natural sciences and mathematics"@en . . . "530 Physik"@de . "530 Physics"@en . . . "550 Geowissenschaften"@de . "550 Earth sciences"@en . . . "560 Paläontologie"@de . "560 Paleontology Paleozoology"@en . . . "900 Geschichte und Geografie"@de . "900 Geography and history"@en . .