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These are of Tertiary and Cretaceous ages, the latter rocks resting on a reddish sandstone of older date. The beds containing Schloenbachia inflata are referable to the Gault. Rocks of Tertiary age are met with at Dombe Grande, Mossamedes and near Loanda. The sandstones with gypsum, copper and sulphur of Dombe are doubtfully considered to be of Triassic age.
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