Xerult

Xerult

[′zir‚əlt]
(geology)
A suborder of the soil order Ultisol, formed in a xeric moisture regime; brownish or reddish soil with a low to moderate organic-carbon content.
References in periodicals archive ?
In the USDA Soil Taxonomy (Soil Survey Staff 2006), these soils would correspond to Alfisols (Xeralfs and to a lesser extent Aqualfs and Ustalfs) for the higher base status soils, and Ultisols (Ustults and to a lesser extent Aquults and Xerults) for the more acidic, lower base status soils.
The dominant suborders of Ultisols are Aquults, Humults, Udults, Ustults, and Xerults (Table 3-5).
Red Brown Earths correspond approximately to Xeralfs or Xerults, depending on base saturation status, according to Soil Taxonomy (Soil Survey Division Staff 1993).