Duripan
Videos
A duripan is a diagnostic soil horizon of the USDA soil taxonomy that is cemented by illuvial silica into a subsurface hardpan. Similar to a fragipan, Petrocalcic Horizon and petrogypsic horizon, it i
A duripan in Arizona
Soil horizon
Videos
A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious p
Duripan
…A duripan is a diagnostic soil horizon of the USDA soil taxonomy that is cemented by illuvial silica into a subsurface hardpan. Similar to a fragipan, Petrocalcic Horizon and petrogypsic…
A cross section of a soil, revealing horizons
Surface runoff, a potential pathway for nonpoint source pollution, from a farm field in Iowa during a rain storm
Albic Luvisol – dark surface horizon on a bleached subsurface horizon (an albic horizon) that tongues into a clay illuviation (Bt) horizon
Soil profile of a road in Bengaluru