Download Aridisol Distribution in US

ARIZONA
IDAHO
Typical Environments:

Arid or dry desert regions

Western United States
Australia
 Argentina
 Portions of Africa
 Middle East

Regions
with little
precipitation!!
Used
mainly for range, wildlife,
and recreation

Contain CaCO3

Dry most of the year = limited leaching

Some subsurface horizon development (A, Bk, C is typical sequence)
Subsurface horizons with accumulation of clays, CaCO3, silica, salts,
and/or gypsum (these materials leached from soils of moister climates)



Silica-cemented hardpans (duripans)
Not enough precipitation for normal agriculture
Salt build-up (salinization) is dangerous when used for irrigated
agriculture

Ochric Epipedon

Argillic or Cambic subsurface (B) horizon
XERIC ARGIDURID-SOUTHERN IDAHO
TYPIC AQUISALID—
CENTRAL NEVADA