Mollic Epipedon - Soil Geography of the USA: A Diagnostic-Horizon Approach - page 29

Table 5.1 Properties of mollic epipedons by soil order

Number
of
pedons

Number of series
examined in this
study

Moist color Base

Sat.
(%)

Thickness
(cm)

SOC
(%)

Diagnostic
subsurface horizon Order Value Chroma Vegetation Parent materials

Alfisol 405 37 21 + 5.3 3 2 82 1.62 Savanna (58 %), broad-

leaved forest (32 %),
grassland (10 %)

Loess (26 %), allu-
vium (24 %), till
(18 %)

Argillic (100 %)

Andisol 65 33 43 + 23 2 2 80 2.99 Savanna (53 %), grass-

land (31 %)

Volcanic ash and
cinders (100 %)

Cambic (69 %),
none (28 %)

Entisol 90 30 20 + 8.0 3 2 90 1.48 Grassland (33 %), broad-

leaved forest (33 %),
savanna (22 %)

Alluvium (59 %),
lacustrine (29 %)

None (100 %)

Inceptisol 33 33 20 + 3.9 3 1 84 3.54 Mixed forest (54 %),

broad-leaved forest
(32 %)

Lacustrine (38 %),
alluvium (27 %),
till (19 %)

Cambic (88 %),
calcic (10 %)

Vertisol 163 64 72 + 34 96 1.62 Grassland (74 %),

savanna (26 %)

Colluvium (44 %),
residuum (20 %),
lacustrine (16 %)

Cambic (65 %),
calcic (13 %),
argillic (11 %)

Mollisol ~7,500 29 48 + 30 3 2 90 2.22 Grassland (93 %),

savanna (5 %)

Loess (45 %), till
(31 %), alluvium
(14 %)

Argillic (66 %),
cambic (21 %)