Soils in their environment - Fundamentals of the Physical Environment - page 442

Plate 18.14 Surface-water Gley (FAO: Eutric Gleysol) on
glacial till of mixed acid and basic igneous rocks in Grampian
region, Scotland. Texture is sandy clay loam and mottling
occurs throughout the soil profile.
Photo: E. A. FitzPatrick

cm

pH

0

Surface
accumulation
of peat

Peat

H 3.1

30

Intermittent
aeration

Eag Grey with mottles 3.7

Light grey with many
mottles

60

Bg 3.9

Mobilization
and local
precipitation
of ferric iron

Slow
drainage
through
impermeable
subsoil

Reddish brown with
many mottles

BCg 3.8

90

120

Glacial
Till

Reddish brown with
common mottles

Cg 3.7

Figure 18.10
Profile of Humic Stagnogley
soil (surface-water gley).

150

Humic surface-water
Gley (Stagnogley)