Abstract

The plain was formed from detritus from the mountains bordering it on the western and southern sides in Tertiary times. Near the coast these terrestrial deposits merge into littoral marine deposits. Stratigraphically the plain is divided into four concentric zones, truncated by the sea coast: (i) the Older Boulder Beds; (ii) the younger gravels; (iii) the Zeila plain "laterite"; and (iv) the Coastal Marine beds. These are described and the possibility of oil deposits discussed.

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