Ustoll

Ustoll

[′üst‚ȯl]
(geology)
A suborder of the soil order Mollisol; formed in a ustic moisture regime and in a mesic or warmer temperature regime; may have a calcic, petrocalcic, or gypsic horizon.
References in periodicals archive ?
The soil climate is classified as mesic passing from Udoll to Ustoll (Van Wanbecke and Scoppa, 1980).