Lime and gypsum accumulation as important parameters in the classification of the soils of Sahl Baraka, Farafra oasis [electronic resource].

Includes references.

Hundred soil profiles were selected to cover the present geomorphic units and represent the main morphological variations in the soils of the studied area. Based on the climatological conditions, morphological description, physical and chemical analyses, the investigated soils could be classified as the following : Psamments; Typic Torripsamments (IS profiles), Typic Quartzipsamments (3 profiles); Calcids; Typic Haplocalcids (J 5 profiles), Lithic Haplocalcids (8 profiles); Salids; Gypsic Haplosalids (7 profiles), Calcic Haplosaldids (6 profiles), Calcic Haplosalids + Gypsic horizon (15 profiles), Gypsic Aquisalids and Calcic Aquisalids (5 profiles) and Gypsids; T}pic Calcigypsids (22 profiles). Typic Haplogypsids ( 4 profiles). The only prominent features of development of this virgin area are the accumulation and formation of calcium carbonate and gypsum precipitations in soil layers of various profiles. A. cording to the accumulation and formation shape of calcium carbonate in these soils they could be classified into six classes. Meanwhile, the soil under investigation can be grouped into four categories according to gypsum content. Keywords: Caicium carbonate content, Farafra oasis, Gypsum, Soil survey & Classification.

Summary in Arabic.

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