| 释义 |
terrigenous, a.|tɛˈrɪdʒɪnəs|
Also erron. terrigeneous.
[f. as prec. + -ous.]
1. Produced or sprung from the earth; earth-born. rare.
1684T. Burnet Th. Earth i. 189 Our terrigenous animals must have been wean'd as soon as they were born. 1830Lyell Princ. Geol. I. i. iii. 31 Either these were terrigenous, or..the animals they so exactly represent have become extinct.
†2. Chem. A term for those metals of which the oxides are called earths. (Cf. calcigenous.) Obs. rare.
1854J. Scoffern in Orr's Circ. Sc., Chem. 433 Silicates, either of the terrigenous or the calcigenous class. c1865J. Wylde in Circ. Sc. I. 394 Tests for the terrigeneous earths.
3. Geol. Land-derived: applied esp. to marine deposits derived from the neighbouring land.
1882Geikie Text Bk. Geol. iii. ii. ii. §6. 437 Mechanical deposits of the sea..Land-derived or Terrigenous. 1884Nature 22 May 84/2 Terrigenous deposits in deep water near land. 1884, etc. [see pelagic a. c]. 1957G. E. Hutchinson Treat. Limnol. I. viii. 550 Most of the calcium in atmospheric precipitation is of terrigenous origin. 1973Nature 27 July 202/1 Deformed early Cainozoic, terrigenous and carbonate sediments form the highest parts of the island. |