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STUDY OF ROCK CLIFF EROSION AND STABILITY IN CUIO AND KALOHANDA (WESTERN ANGOLA)
Abstract
The aim of this work is to study the erosion and stability of rock cliffs. The selected sites are located in the Cuio and Kalohanda areas from the southern sector of the Baia-Farta municipality, on the coast of the Province of Benguela, central-western Angola. The fourteen studied sites are situated nearby fishing villages and present two distinct climate seasons: the rainy season and the dry season. The studied area presents a huge potential for economic activity related with tourism. The rock cliffs are mainly constituted by carbonated formations of marine origin, composed by carbonated and marly rocks, the designated Quissonde and Catumbela Formations of Albanian age (Lower Cretaceous). Two assessment procedures were established: a procedure to assess rock cliff stability and another related to coastal erosion susceptibility. Rockfalls were registered in all stations and flows were verified in 92.3% of the stations; toppling failures occurred in 27.3% of the stations. Costal abrasion was observed in 78.6% of the fourteen stations. Cliff erosion susceptibility was defined as low, medium and high in 21.4%, 50.0% and 28.6% of the studied stations, respectively.
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Buta-Neto, A., Tavares, T.S., Quesne, D., Giraud, M., Meister, C., David, B., Morais, M.L., Synthèse des travaux ménes sur le bassin de Benguela (Sud Angola): implications sédimentologiques et structurales, Africa Geoscience Review, France, vol. 13/issue 3, pp 23-250, 2006.
Tavares, T., Meister, C., Duarte-Morais, M.L., David, B., Albian ammonites of the Benguela Basin (Angola): a biostratigraphic framework, South African Journal of Geology, South-Africa, vol. 110, pp 137 156, 2007.
Quesne, D., Buta-Neto, A., Benard, D., Guiraud, G., Distribuition of Albian clastic deposits in the Benguela basin (Angola): evidence of a Benguela paleocorrent?, Bulletin de la Société Géologique de France, France, vol. 180, issue 2, pp 117-129, 2009.
Guiraud, M., Buta-Neto, A., Quesne, D., Segmentation and differential post-rift at the Angolan margin as recorded by the transform-rifted Benguela and oblique to Orthogonal-rifted Kwanza basins. Marine and Petroleum Geology, Netherlands, vol. 27, issue 5, pp 1040-1062, 2010.
Marques, F., Romariz, C., Susceptibilidade à erosão litoral da península de Peniche. Geolis, Portugal, vol. 3, pp 212-222, 1989. (in Portuguese)
Caiúve, A.D.B., Study of costal erosion and rock cliff stability of Caota and Sombreiro, Benguela, Angola, MSc Thesis in Geosciences, University of Coimbra, Portugal, 93 p, 2014 (in Portuguese)
Varnes D.J., Slope Movement Types and Processes. Landslides: Analysis and control. Transportation and Road Research Board, National Academy of Science, United States of America, Special Report 176, pp 11 33, 1978.
Cruden D.M., Varnes D.J., Landslides Types and Processes, Transportation Research Board, National Research Council, Academy of Science, United States of America, Special Report 247, pp 36-75, 1996.
Andrade, P. S., André, I.; Callapez, P.M., Stability Assessment of Road Slopes, SW Angola. Hydrogeology, Engineering Geology and Geotechnics, Varna, SGEM2017, Bulgaria, pp 785 792, 2017.
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