Introduction - Soil Geography of the USA: A Diagnostic-Horizon Approach - page 4

Table 1.3 (continued)
Subsurface
horizon Subgroup b Order Suborder Great group

Calcic Aridisols Aridisols,

Inceptisols,
Mollisols,
Vertisols

Alfisols (Calcidic, Calcic),
Andisols, Aridisols,
Gelisols, Inceptisols
(Haplocalcidic, Calcic),
Mollisols (Calcidic, Cal-
cic, Calciargillic),
Vertisols

Cambic Aridisols Aridisols (Aquicambidic,

Cambidic), Inceptisols
(Ruptic-Alfic,
Rendollic), Mollisols
(Inceptic, Cambidic)

Duripan Aridisols Alfisols, Andisols,

Inceptisols,
Mollisols,
Spodosols,
Vertisols

Andisols, Aridisols,
Entisols, Inceptisols,
Mollisols, Spodosols

Fragipan Alfisols,

Inceptisols,
Spodosols,
Ultisols

Alfisols (Fragic,
Fragiaquic), Inceptisols
(Fragic, Fragiaquic),
Spodosols (Fragic,
Fragiaquic), Ultisols
(Fragic, Fragiaquic)

Glossic Alfisols Alfisols (Glossic,

Glossaquic), Mollisols,
Ultisols (Glossic,
Glossaquic)

Gypsic Aridisols Aridisols,

Vertisols

Aridisols, Gelisols,
Inceptisols, Mollisols,
Vertisols

Kandic (Ultisols)

(Oxisols)

Alfisols, Oxisols,
Ultisols

Alfisols (Kandic, Aquultic,
Ultic), Aridisols (Ultic),
Inceptisols (Ruptic-
Ultic), Oxisols
(Kandiudalfic,
Kandiustalfic),
Spodosols (Ultic),
Ultisols (kandic)

Natric Alfisols,

Aridisols,
Mollisols,
Vertisols

Alfisols, Aridisols, Entisols
(Sodic), Gelisols,
Mollisols

Ortstein [None]

Oxic (Oxisols) Andisols, Inceptisols,

Mollisols (Oxic,
Torroxic)

Petrocalcic Aridisols Alfisols, Andisols,

Aridisols, Inceptisols,
Mollisols (Petrocalcic,
Petrocalcidic), Vertisols