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Arkell.1956.Jurassic..

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NORTH ABYSSINIAN PLATEAU<br />

present author's). For general accounts see also Krenkel (1926) and<br />

Stefanini (1933).<br />

[Abyssinian lavas, forming top of plateau; up to 500 m.<br />

LOWER CRETACEOUS ? 200 m.<br />

Sandstones, conglomerates, marls, variegated clays, and gypsum,<br />

unfossiliferous. (= Nubian Sandstone ?)]<br />

FIG. 45.—Sketch-map showing the distribution of Jurassic limestones (black) in NE.<br />

Africa. Inliers of the Lugh Series marked LS. Based mainly on Stefanini, 1933.<br />

(For revision of the north-west edge of the Abyssinian lava plateau on the Sudan<br />

border, see Andrew, 1948.)<br />

LOWER KIMERIDGIAN, 100-170 m.<br />

Upper Antalo or Lagagima Limestone. Limestone, marls and marly<br />

limestones with molluscan fauna like that of the Swiss Jura. Terebratula<br />

subsella, Acrocidaris nobilis Ag., etc.<br />

http://jurassic.ru/

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