单词 | illuvial |
释义 | illuvialadj. Soil Science. = illuviated adj. at illuviation n. Derivatives; also, resulting from illuviation. ΘΚΠ the world > the earth > structure of the earth > formation of features > soil formation > [adjective] > forming specific type of soil podzolized1923 illuvial1924 solodized1925 illuviated1928 solonized1945 1924 Geol. Mag. LXI. 451 Three main horizons are generally recognized,..the A or eluvial horizon, the B or illuvial horizon, and the C horizon, which consists of the parent material. 1932 G. W. Robinson Soils iv. 92 We may also distinguish a type of clay which has been enriched by illuvial accumulation. 1952 P. W. Richards Trop. Rain Forest ix. 208 All soils of the rain-forest region..are therefore strongly leached and have an eluvial horizon, or leached zone, above the illuvial horizon. 1963 D. W. Humphries & E. E. Humphries tr. H. Termier & G. Termier Erosion & Sedimentation vi. 138 A soil is composed of an impoverished zone, the eluvial horizon, and also a zone of enrichment or accumulation, the illuvial horizon. This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018). < adj.1924 |
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