Geoscience Reference
In-Depth Information
Table 3.2
Soil horizon nomenclature for several taxonomic systems
Soil Taxonomy
(Soil Survey
Staff
2010
)
Canadian (Soil
Classifi cation Working
Group
1998
)
WRB (IUSS
Working
Group
2006
)
Short description
Russian (Gerasimova et al.
2013
)
Master horizons
Organic soil materials
O
O,T,TO,TE,TJ
L, F, H, O
L, O, H
Surface mineral horizon
A
A:AY,AU,AJ,AH,RU,H,AO
A
A
Bleached surface mineral horizon
E
EL,E
e
E
Illuvial horizon or weathered in situ
B
BT,BI,BHF/BM,BFM,BAN
B
B
Minimally weathered
C
BC,C
C
C
Hard bedrock
R
R
R
R
Root limit. Subsoil, human
M
-
-
Water
W
W
L, W
Suffi xes
Highly decomposed
a
h
h
a
Buried
b
[
]
b
b
Concretions or nodules
c
nn,nc,fn
cc
c
Coprogenous earth
co
-
c
Physical root restriction
d
d,ad
-
d
Diatomaceous earth
di
-
d
Organic, intermed. decompose.
e
te,md
m
e
Frozen soil or water
f
z
f
Dry permafrost
ff
┴
-
-
Strong gleying
g
g,q
g
l
Illuvial organic matter
h
BH,hi
h
h
Slightly decomposed organic
i
TJ, TO
f
i
Jarosite
j
-
j
