The Geomorphological Map of Mt. Amba Aradam Southern Slope (Tigray, Ethiopia)

Abstract

The geomorphological map described below covers an area of about 100 km 2 , located on the southeastern slope of Mt. Amba Aradam (northern Ethiopia). It has been produced within the Ethio-Italian Cooperation Programme, in order to understand the recent evolution and present-day trends of the area as a basic tool for land reclamation/rehabilitation projects. The survey was carried out in three successive work campaigns

Landslides in the Ethiopian highlands and the Rift margins

“…A large number of dormant landslide bodies (earth/mud flows or rotational slides), likely generated in climatic conditions wetter than the present ones, are found in the area (Nyssen et al, 2002;Moeyersons et al, 2008;Coltorti et al, 2009). In many cases, they are partially reactivated by the incision of gullies in the landslide mass (Nyssen et al, 2002).…”

“…As elsewhere in the world, the occurrence of large-scale inactive debris flow bodies may be related to past wetter climatic conditions (Nyssen et al, 2002). (5) Where thick layers of hard rock overlie clayey formations, as in the case of the Amba Aradam Formation in Tigray, largescale lateral spreading phenomena (Dramis and Sorriso-Valvo, 1994;Dikau et al, 1996), moving at an extremely slow rate, are present (Coltorti et al, 2009). …”

“…Where the Amba Aradam Formation overlies the Agula Shales, large-scale lateral spreading phenomena, locally evolving to rotational slides, are manifested (Coltorti et al, 2009) (Fig. 10).…”

Análise Temática e Conceitual de Mapas Geomorfológicos: A Transcrição Gráfica da Complexidade do Relevo

“…Para os mapas estaduais, por exemplo, com exceção de São Paulo (que teve representação associativa), todos os demais indicaram implicitamente a morfogênese a partir das unidades morfológicas, cuja descrição genética consta apenas nos relatórios ou publicações. Já o mapa do Monte Amba Aradam, na Etiópia (COLTORTI et al, 2009), foi o único a apresentar a morfogênese implícita à morfocronologia.…”

Glacial and periglacial geomorphology and its paleoclimatological significance in three North Ethiopian Mountains, including a detailed geomorphological map

“…Although many geomorphological investigations were done in Ethiopia (e.g., Hastenrath, 1974;Williams et al, 1978;Hurni, 1989;Billi and Dramis, 2003;Nyssen et al, 2004;Moeyersons et al, 2008), few led to detailed and holistic geomorphological maps (e.g., Hurni, 1981;Coltorti et al, 2009; A C C E P T E D M A N U S C R I P T…”