a. Geol. [ad. F. Jurassique, f. Jura (see def.) after Liassic, Triassic.] Of or pertaining to the Jura mountains: applied to geological formations belonging to the period between the Triassic and the Cretaceous, characterized by the prevalence of oolitic limestone, of which the Jura mountains between France and Switzerland are chiefly formed.
1833. Lyell, Princ. Geol., III. 372. Sedimentary formations … as modern as the jurassic or oolite formations.
1865. Lubbock, Preh. Times, 290. The Aube runs through cretaceous and Jurassic strata.
1873. Dawson, Earth & Man, viii. 189. The Trias is succeeded by a great and complex system of formations, usually known as the Jurassic.
