单词 | nummulitic |
释义 | nummuliticadj. Geology. Containing or consisting of nummulites; esp. designating an Eocene limestone formation which outcrops widely from North Africa and the Alps to east Asia. ΘΚΠ the world > the earth > structure of the earth > structural features > formations by contents > [adjective] > containing organic remains > containing fossils fossiliferous1829 ammonitiferous1830 nummulitic1830 hippurite1831 indusial1833 fucoid1839 encrinal1845 reptiliferous1845 fucoidal1849 nummuline1861 encrinitic1863 encrinital1876 spiriferous1888 1830 C. Lyell Let. 10 Aug. in Life, Lett. & Jrnls. (1881) I. xii. 284 At Castel Follet..nummulitic limestone is eroded to the depth of 25 feet. 1833 C. Lyell Princ. Geol. III. 185 Secondary rocks, composed in great part of grey and greenish sandstone and conglomerate, with some thick beds of nummulitic limestone. 1863 J. D. Dana Man. Geol. 523 They [sc. the pyramids] are largely Nummulitic, many beds consisting almost wholly of..Nummulites. 1882 A. Geikie Text-bk. Geol. vi. iv. 837 The early Tertiary or nummulitic sea was upheaved into a succession of giant mountains. 1911 Science 10 Feb. 233/2 This formation, with its beds of nummulitic limestone and great numbers of cristellaria, carries an extensive and varied fauna. 1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) x. 239 Far more important are the Eocene Nummulitic limestones, found throughout the area of the great ocean. 1986 G. Culverwell tr. P. Arduini & G. Teruzzi Macdonald Encycl. Fossils No. 18 They sometimes occur in such large concentrations that they form entire rock units as the ‘nummulitic limestone’ outcrops found in Italy and other countries outside Europe. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < adj.1830 |
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