| 释义 |
laterization|ˌlætəraɪˈzeɪʃən|
[f. laterite + -ization, rendering G. lateritisirung (see prec.).]
The alteration of rock to laterite; the kind of weathering or soil-forming process that results in laterite and lateritic soils.
1903A. Geikie Text-bk. Geol. (ed. 4) I. 169 Laterite... The peculiar kind of alteration exemplified by this rock and by Bauxite has been termed ‘Laterisation’ [by Bauer]. 1917Mining Mag. XVII. 74/2 A very definite line must be drawn..between live laterite or that in process of formation, and dead laterite or that in which laterization is no longer actively operative. 1936U.S. Dept. Agric. Misc. Publ. No. 229.22 The laterization process is, perhaps, more strictly a geological process than one of soil building. 1938U.S. Dept. Agric. Yearbk. 973 The soil-forming process called laterization is essentially the progressive hydrolysis of rock minerals, and its full development results in their conversion to silicic acid, aluminum hydroxide, and iron hydroxide or their more or less complete dehydration products—the Laterites. 1952P. W. Richards Trop. Rain Forest ix. 209 This preferential leaching of silica from a soil is called laterization. 1967M. J. Coe Ecol. Alpine Zone Mt. Kenya 76 The clays show a certain number of darker stratifications but, due to the low temperatures, there are no signs of laterisation.
Hence (as back-formations) ˈlaterized ppl. a., converted into laterite; ˈlaterizing vbl. n. and ppl. a.
1917Mining Mag. XVII. 67/2 Water from the laterizing zone when exposed to the air deposits ferric and aluminium hydrates with hydrous silicate of alumina. Ibid. 74/2 The upper portion of the laterite..is detrital, the lower part laterized and partly laterized schist merging gradually into altered schist. 1932Technical Communications Imperial Bureau Soil Sci. No. 24. 19 Soils formed under laterising conditions. 1964Sci. Amer. Nov. 97/2 Laterized soils occur most commonly in the tropical belt between the latitudes of 30 degrees North and 30 degrees South. |