| 释义 |
oolitic, a.|əʊəʊˈlɪtɪk|
[f. oolite + -ic: in mod.F. oölithique (in Littré).]
1. Min. Of the structure of oolite or roe-stone.
1796Kirwan Elem. Min. (ed. 2) II. 179 Pisiform, or granular iron ore..Of this sort is the Oolitic Ore found at Creusot near Mount Cenis. 1878Lawrence tr. Cotta's Rocks Class. 85 Oolitic texture is only found in limestones and ironstones, and it consists either in the entire mass being composed of small globules, or a great number..of such being contained in the mass.
2. Geol. Of or pertaining to the Oolite formation; Jurassic.
1832H. T. De la Beche Geol. Man. (ed. 2) 311 This group is..composed of various alternations of clays, sandstones, marls, and limestones; many of the latter being oolitic, whence the name oolitic series. 1849Dana Geol. ix. (1850) 495 The coal beds are of the Oolitic epoch. 1878Huxley Physiogr. 118 It is the limestones of the Oolitic formations that furnish most of the springs. |