| 释义 |
illuviation
noun[ U or C ]
geology specializeduk /ɪˌluː.viˈeɪ.ʃən/ us /ɪˌluː.viˈeɪ.ʃən/
the process by which substances from one layer of soil are washed down to a lower layer, for example by rain water :
This suggests that the illuviation started to occur quite early in the soil development history.
Clay illuviations have already been identified near the top of unit III.
Clay illuviation in these naturally impoverished soils can lead to a virtually complete removal of charged colloids.
This is as a result of illuviation or weathering of silicates in this location.
The overall trend might suggest that iron illuviation took place.
SMART Vocabulary: related words and phrases
Soil
alluvial
boulder clay
clay
clayey
cover crop
earthiness
frozen
humus
lime
loam
ooze
peat bog
sandy
sedimentation
silt
soil
solarization
solarize
unploughed
worm cast
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