placic horizon

placic horizon

[′plā·sik hə′rīz·ən]
(geology)
A black to dark red soil horizon that is usually cemented with iron and is not very permeable.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Occasionally there is a weakly or moderately developed iron pan (placic horizon, Hewitt 1998) at the base of the Bg horizon.
The New Zealand Soil Classification (Hewitt 1998) classifies the 4 soil series, derived from mineral parent material, on the basis of differences in drainage condition plus differences in acidity and the presence of a placic horizon and a peaty topsoil.