Chemistry and mineralogy of some Plio-Pleistocene tuffs from the Shungura Formation, southwest Ethiopia
Widespread tuffs have made subdivision and detailed mapping of the Shungura formation possible, have provided material for potassium argon dating, and have allowed direct lithostratigraphic correlation with the Koobi Fora Formation in northern Kenya
Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid NorthernEthiopia
Agricultural land use ; Erosion control ; Ethiopia ; Experiment plot ; Land use ; Rill wash ; Semi-arid area ; Slope gradient ; Stone wall ; Water erosion ; Watershed
to three slope gradients, were established for cropland (cultivated land for annual crop production) and rangeland (heavily grazed land on hillslopes with high rock-fragment cover) at Mayleba catchment in Tigray, Ethiopia. SWC structures tested were stone
The great concentration of human population between 2 600-2 800 m above sea level in this part of Ethiopia suggests the availability of flat and ondulating topography at that altitude. Cattle are also found more at these elevations; lower altitudes
Glacial and periglacial phenomena in Ethiopia : a review
Ethiopia ; Freeze-thaw cycle ; Frost action ; Glacial features ; Glaciation ; High mountain ; Mountain ; Periglacial features ; Permafrost ; Pleistocene
The glacial and periglacial geomorphology for the Simen and Bale Mountains in Ethiopia is reviewed. The Simen Mountains are mostly absent of relict perglacial landforms and today host a variety of miniature cryogenic phenomena. The Bale Mountains
host a few localized large relict cryogenic landforms (e.g. stone stripes), suggesting past sporadic permafrost. A variety of regional factors may have contributed to the more extensive periglacial activity in southern Ethiopia than in the higher Simen
Age of volcanism and rifting in southwestern Ethiopia
Field data and K-Ar isotopic ages from southwestern Ethiopia indicate that volcanism in this area began earlier than previously suspected, and that Quaternary volcanism was not restricted to the axial zone. That major rifting in this region did
Hominid occupation of the east-central highlands of Ethiopia in the Plio-Pleistocene
Stone artefacts and fossil evidence suggest that hominids did not reach the high plateau of Ethiopia until1.5 Myr ago. Contact between hominids of the plateau and the Rift Valley seems likely.
This paper investigates the performance of selected soil and water conservation measures in the highlands of Ethiopia and Eritrea, namely Fanya Juu, soil/stone bund, grass strips and double ditches. The impact of these techniques on runoff, soil
The resilience and sustainability of local wetland management institutions in Illubabor and Western Wellega, Ethiopia
Ethiopia ; Humid environment ; Local administration ; Management ; Natural resources ; Social capital
The paper examines the case of local community based institutions involved in wetland management in western Ethiopia. Drawing upon the findings of participatory fieldwork undertaken in eight communities, it is argued that although local institutions
Aeolian features ; Aeolian transport ; Africa ; Arid area ; Australia ; Biogenic process ; Botswana ; Desert ; Duricrust ; Ethiopia ; Flood ; Israel ; Kalahari ; Namibia ; Negev ; New South Wales ; Sedimentation ; Soil properties ; Spain ; Stream
The 9 papers report studies carried out in the USA, Australia, Israel, Spain as well as 3 regions of Africa : the Namib, the Kalahari and northernEthiopia. The first paper focuses explicitly on aeolian processes : Stout J.E. Then a paper presents