| 释义 |
geochronology|ˌdʒiːəʊkrəˈnɒlədʒɪ|
[f. geo- + chronology.]
The chronology of the earth; the measurement of geological time and the ordering of past geological events. (The term geochrone introduced by Prof. H. S. Williams to designate a unit of geological time does not seem to have been widely adopted.)
1893H. S. Williams in Jrnl. Geol. I. 294 In all these studies in which the geological time-scale is applied to the evolution of the earth.., the time concerned is not human chronology but is what may be called geochronology. For this purpose we need a standard time-unit or geochrone. 1934Discovery Mar. 66/2 The high upper limits are supported by the geochronology of the Swedish geologist, de Geer. 1957G. Clark Archæol. & Society (ed. 3) v. 133 Geochronology, the chronology based on the natural changes recorded in the geological sequence, depends on many branches of natural science. 1965F. J. Monkhouse Dict. Geogr. 1/2 Absolute age, in geochronology, the dating of rocks in actual terms of years.
Hence ˌgeochronoˈlogical a., of or pertaining to geochronology; ˌgeochronoˈlogically adv.; ˌgeochroˈnologist, an expert in, or student of, geochronology.
1934Antiquity VIII. 245 A geochronological investigation of the ice-lake sediments. 1936Proc. Prehist. Soc. II. 169 The absolute geochronological scale which has been established by Scandinavian workers. 1958F. E. Zeuner Dating Past (ed. 4) 4 There are several geochronological methods, each capable of covering not more than a limited range of time. Ibid. iv. 109 Fromm's (1938) geochronologically dated pollen-diagrams from Angermanland provide the remainder of dates in the Scandinavian sequence, and Welten's work in Switzerland may become important as a second pollen-time-scale. 1960New Scientist 14 July 137/3 The latest method in the repertoire of the geochronologist is the rubidium-strontium method. 1970Nature 24 Oct. 320/1 The matching of discrete geochronological zones across the boundaries of continents thought to be adjacent before the onset of continental drift. Ibid. 320/2 Other pre-drift configurations have not been so well documented geochronologically. |