Alba Layer

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 It might be outdated or ideologically biased.

Alba Layer

 

alb (from Alba, the Latin name for the Aube River in France), the upper layer of the lower section of a cretaceous system; identified by A. D. d’Orbigny in 1842.

A typical sample is composed of clay and sandstone with characteristic complexes dominated by ammonites, such as Donvilleiceras and Hoplites dentatus. It is widespread in Europe (the Anglo-Parisian basin, the East European platform), in the Caucasus, in the Great Balkhan, and in the Pacific Ocean area (Kamchatka, Japan, Alaska).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.