Abstract

Wealden beds of the English basin (Weald) have been considered post-Jurassic and pre-Aptian in age, and are probably the most complete nonmarine succession, for the period, in northwestern Europe. These strata are compared with those of France, the Netherlands, Germany, Belgium, and Switzerland, and it is concluded that the term Wealden should only be applied to those nonmarine strata that can be correlated directly with the English basin beds and are definitely in the lower Cretaceous pre-Aptian interval; otherwise the term "Wealden facies" should be used.

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