| 释义 |
sedimentary, a. and n.|sɛdɪˈmɛntərɪ|
[f. sediment n. + -ary. Cf. F. sédimentaire.]
A. adj.
1. Of, pertaining to, or of the nature of sediment.
1846G. E. Day tr. Simon's Anim. Chem. II. 217 The crisis..shows itself in the urine by the secretion becoming turbid and sedimentary. 1854Bakewell Geol. 33 The sedimentary depositions having taken place after the crust of the earth had been lifted up above the level of the sea. 1860Maury Phys. Geog. Sea (Low) xiv. 609 Mud and all the light sedimentary matter of river waters. 1876Page Adv. Text-bk. Geol. xviii. 351 The sedimentary origin of chalk.
2. Geol. Of rocks, etc.: Formed by the deposition of sediment.
1830Lyell Princ. Geol. (1835) I. i. v. 127 Those who endeavoured to explain the formation of sedimentary strata by causes now in diurnal action. 1839G. Roberts Dict. Geol. s.v. Tertiary Strata, A series of sedimentary rocks. 1880A. R. Wallace Isl. Life x. 212 The sedimentary rocks of one age are partly formed from the destruction of the sedimentary rocks of former ages.
B. n. A sedimentary formation or deposit.
1878Smithsonian Rep. 70 The older sedimentaries have been entirely removed from the mountain border. 1888Teall Brit. Petrogr. 418 The zone of contact between the crystalline rocks and the sedimentaries. |