View allAll Photos Tagged Photo
Close-up of lamellae. A lamella is an illuvial horizon less than 7.5 cm thick (photos 31 and 32). Each lamella contains an accumulation of oriented silicate clay on or bridging sand and silt grains (and rock fragments if any are present). A lamella has more silicate clay than the overlying eluvial horizon. The significance of lamellae to soil classification is not in the single lamella but in the multiple number of lamellae, each with an overlying eluvial horizon in a single pedon. A single lamella may occur in a pedon, but more commonly there are several lamellae separated by eluvial horizons.
Soil Taxonomy, 2nd Edition, 1999, (p. 71).