Campanian Stage

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Campanian Stage

a stage of the Upper Cretaceous, identified in France by the French geologist H. Coquand in 1857. Atypical cross section contains light blue, gray, and whitish clayey limestones and marls with numerous ammonites and sea urchins. The Campanian stage corresponds in time to the greatest transgression of the seas over former land in the Cretaceous period. It is extensively developed both on platforms and in geosynclinal areas. The Campanian stage may be identified in Upper Cretaceous deposits in Europe, Africa, Asia, and North America by the presence of a group of typical fossils, including Foraminifera, belemnites, mollusks, and sea urchins.

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Egypt: full name, the Arab Republic of Egypt; Gumhuria Misr al-Arabia

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The bituminous sands appear to be restricted to the Abeokuta group; this unit extends throughout the entire basin, unconformably overlying the basement complex .The basin has also been considered to be a positive shallow depression which received a relatively thin sediments supply and was formed during the Campanian stage associated with the Benue--Abakaliki anticlinorium and the subsidence of the Anambra platform which gave rise to the Anambra basin.

Scanning electron microscope description of the Afowo oil sand deposits in south-western Nigeria

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