| 释义 |
geochemistry|dʒiːəʊˈkɛmɪstrɪ|
[f. geo- + chemistry; cf. G. geochemie (C. F. Schönbein 1838, in Ann. d. Physik. u. Chem. XLV. 281).]
The chemistry of the earth; the study of the chemical composition of the earth.
1903Carnegie Inst. Yearbk. 1902 27 The problems of geophysics and geochemistry involve the applications of pure physics and pure chemistry from the minutest parts of the earth to the mass of the earth as a whole. 1952New Biol. XIII. 122 The science of geochemistry, with its emphasis on the dynamic exchange of molecules and ions between lithosphere, hydrosphere, biosphere, and atmosphere.
So geoˈchemical a., of or pertaining to geochemistry; geoˈchemically adv.; geoˈchemist, an expert in, or student of, geochemistry.
1888Jrnl. Soc. Chem. Industry VII. 338 (title) Geochemical studies. 1918Webster Add., Geochemist. 1946Nature 6 July 31/1 Some conclusions which may be of interest to oil- and water-geologists, geophysicists and geochemists. 1957Times 20 Dec. 13/1 Developments in geochemical prospecting—the use of chemical analyses of soil to detect underlying deposits of minerals. 1957G. E. Hutchinson Treat. Limnol. I. viii. 559 This Rb:K ratio is by no means geochemically impossible. 1965G. J. Williams Econ. Geol. N.Z. x. 156/2 Miss X. F. Williams has reported copper and nickel geochemically in this region. 1970Nature 17 Oct. 273/2 Geochemical studies indicate that the weathering of 100 tons of average continental surface rock supplies about 0·9 ton of sodium to the hydrological cycle. |