A grey or light-coloured 'E' horizon is the result of severe leaching, or eluviation, which washes out everything but quartz grains. Eluviation is the removal of soil, clay, silt or fine organic ...

The study revealed subtle differences in deposits and soil layers and horizons while also determining the bedrock depth using ambient seismic noise. "The two methods we used in the study revealed ...

Soil organisms, like earthworms, mix the materials together, merging the boundaries between the horizons. These soils are leached, but not heavily, so the aluminium and iron oxides are dispersed ...