mollic horizon

views updated May 11 2018

mollic horizon A surface horizon of mineral soil that is dark in colour, and relatively deep, and contains (dry weight) at least 1 per cent organic matter or 0.6 per cent organic carbon, the determination of either being acceptable. It is the diagnostic horizon of Mollisols and is associated with base-rich materials and grassland vegetation.

mollic horizon

views updated May 21 2018

mollic horizon A surface horizon of mineral soil that is dark in colour, and relatively deep, and contains at least 1 per cent organic matter, or 0.6 per cent organic carbon, the determination of either being acceptable. It is the diagnostic horizon of Mollisols and is associated with base-rich materials and grassland vegetation.

mollic horizon

views updated May 08 2018

mollic horizon Surface soil horizon of mineral soil that is dark in colour, and relatively deep, and contains (dry weight) at least 1% organic matter, or 0.6% organic carbon, the determination of either being acceptable. It is the diagnostic horizon of Mollisols and is associated with base-rich materials and grassland vegetation.