neocomian

2 definitions found

neocomian - Collaborative International Dictionary of English v.0.48 :

  Neocomian \Ne`o*co"mi*an\, n. [From Neocomium, the Latin name of
     Neuchatel, in Switzerland, where these rocks occur.] (Geol.)
     A term applied to the lowest deposits of the Cretaceous or
     chalk formation of Europe, being the lower greensand.
     [1913 Webster]

  Neocomian \Ne`o*co"mi*an\, a. (Geol.)
     Of or pertaining to the lower greensand.
     [1913 Webster]