... Nile drains predominantly crystalline basement rocks, whereas the Blue Nile and Atbara flow off the Ethiopian Highlands, which consist of Tertiary volcanic rocks. A high-resolution profile of 87 Sr/ 86 Sr and Ti/Al ratios from a well-dated core in the Nile Delta shows a close correspondence with known...

... by a combination of Apatite Fission Track Analysis, planation surface analysis, and Red Sea sink volumes. Nubia was a significant supplier of sand-rich sediment during wet periods. This sediment supply pattern contrasts with the present-day situation where the Ethiopian Highlands contribute the vast majority...

... of the modern Nile is dominated by input from the Ethiopian Highlands, transported by the Blue Nile and Atbara rivers. Detrital zircons in the Nile trunk are predominantly derived from Phanerozoic cover rocks. Most detritus from the upstream White Nile is trapped in the Sudd marshes and contributes little...

... water spilled northwestward toward the Tushka depression due to an unusual water rise in Lake Nasser induced by high precipitation in the Ethiopian Highlands. Five lakes were formed in local depressions underlain by an impermeable Paleocene shale and chalk formation. The lakes developed through three...

..., clinopyroxene, and opaques derived from alkali and tholeiitic basalts of the Ethiopian Highlands. Wadis (dry river beds) draining the Red Sea Hills contribute predominantly clinopyroxene, epidote, calcic amphibole, and opaques eroded from ophiolite complexes, calc-alkaline volcanics, and granitoids as well...

... stresses in the oceanic regions of the African plate range from tension along the mid-ocean ridges (9 MPa) to compression in the ocean basins (10 MPa). Continental regions near sea level are in a near-neutral state of stress. There are large extensional stresses present in the Ethiopian highlands (15 MPa...

...Fig. 3. Typical landslide types in the Ethiopian highlands (see Fig. 1 for location of ERA districts). ...

... differences in lithospheric structure beneath the East African and Ethiopian Plateaus. The S-wave velocity structure of the upper mantle to at least 100 to 150 km depth beneath the Kenya Highlands is similar to structure under the East African Plateau in Tanzania. It therefore appears that the plateau...

..., 1971 ). At the southern end of the Red Sea apparent local motions of different blocks could be the result of the rotation of the Arabian Peninsula. The region affected is on the African continent east of the Ethiopian Highland and north of the Somalia Plateau. This region is called the Afar...

...Figure 1. Location of the study area: (a) Agoro-Shahigubi Road and (b) the Ethiopian highlands and rift system. ...

...Figure 4.3 Sampling mantle plume gases in Ethiopia. (a) Raphael Pik explaining the geology of Afar (November 2017). (b) Dereje Ayalew and Antonio Caracausi sampling mineral spring gases at Ambo, Ethiopian Highlands (April 2018). (c) Transporting equipment in central Afar (January 2011). (d...