单词 | oolitic |
释义 | ooliticadj. Geology. 1. Of, relating to, or of the nature of oolite. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [adjective] > calcareous > oolite oolitic1796 oviform1799 oolithic1895 1796 R. Kirwan Elements Mineral. (ed. 2) II. 179 Pisiform, or granular iron ore..Of this sort is the Oolitic Ore found at Creusot near Mount Cenis. 1855 P. J. Bailey Mystic & Other Poems 69 Chaotic and amorphous, petrified fire, Granitic, oolitic; sand and lime; Igneous and aquatic beds of stone. 1878 P. H. Lawrence tr. B. von Cotta Rocks Classified (new ed.) 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. 1910 Man 10 96 A short while ago, at Overbury, a village on the south side of the hill, a skeleton was found in a quarry of oolitic brash. 1957 H. S. Zim & P. R. Shaffer Rocks & Minerals 126 Oolitic limestones usually consist of a mass of small concretions, each built up layer upon layer around some small nucleus. 1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) iii. 62/1 Late Precambrian calcareous beds with dolomitic, oolitic and stromatolitic horizons pass without unconformity or major lithological change up into the Cambrian. 2. Usually with capital initial. Of, relating to, or designating the Oolite series. ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > secondary or Mesozoic > Jurassic oolitic1827 Jurassic1831 liassic1833 1827 Trans. Geol. Soc. 2 293 The strata..were in fact the equivalent of the oolitic series. 1878 T. H. Huxley Physiography (ed. 2) 118 It is the limestones of the Oolitic formations that furnish most of the springs. 1937 Rep. Invest. U.S. Bureau of Mines 33 (title) Estimate of natural-gas reserves from the Layton, Oolitic, and Oswego-Prue horizons in the Oklahoma City oil field. 2001 Oxoniensia 65 17 Further NE. lie the complex beds of both Great and Inferior Oolitic series. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < adj.1796 |
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