neocomian

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

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