wealden

CIDE DICTIONARY

wealden, a. [AS. weald, wald, a forest, a wood. So called because this formation occurs in the wealds, or woods, of Kent and Sussex. See Weald.].

 Of or pertaining to the lowest division of the Cretaceous formation in England and on the Continent, which overlies the Oölitic series.  [1913 Webster]

wealden, n. 

 The Wealden group or strata.  [1913 Webster]

OXFORD DICTIONARY

wealden, adj. & n. Brit.
--adj.
1 of the Weald.
2 resembling the Weald geologically.
--n. a series of Lower Cretaceous freshwater deposits above Jurassic strata and below chalk, best exemplified in the Weald.