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Soil Report - Agriculture et Agroalimentaire Canada

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Table 29. Generalized profile criteria used to differentiate b<strong>et</strong>ween soil drainage groups<br />

Drainage<br />

group<br />

General<br />

description<br />

and criteria "A" horizons "B" horizons "C" horizons<br />

S-1 Fine texture ; fine Fine to medium Fine texture, C; Fine texture,<br />

clayey ; blocky to texture, C, SiC coarse blocky C; medium to<br />

massive ; lacustrine/ or SiCL ; granular structure . coarse, blocky<br />

marine deposits. structure . to massive structure.<br />

S-2 Medium to fine tex- Medium texture, Fine to medium Fine to medium<br />

ture ; fine loamy L, SiL, CL or texture, C, SiCL, texture, C, SiC,<br />

and fine clayey ; SiCL ; platy or CL ; medium to SiCL, CL;<br />

blocky to massive; granular coarse, subang- medium to<br />

ground moraine till structure . ular to angular coarse, blocky,<br />

or lacustrine deposits . blocky structure . prismatic to massive<br />

structure .<br />

S-3 Medium to coarse Medium to coarse Medium to coarse Fine to medium<br />

texture ; coarse texture, L, SL, texture, SCL, L, texture, C, SiC,<br />

loamy over fine LS or S ; single SL, S ; fine to SiCL, CL, SCL,<br />

clayey or fine grain or weak coarse subangular SiL ; coarse<br />

loamy ; blocky subangular blocky structure . angular blocky<br />

structure ; shallow structure . structure .<br />

water-lain sediments<br />

over ground moraine<br />

till deposits .<br />

S-4 Medium to coarse Medium to coarse Fine to medium Medium texture,<br />

texture ; fine loamy ; texture, SCL, texture, C, SiC, L, CL, SiL, SCL,<br />

blocky "B" horizon SiL, L, SL, LS, S ; SiCL, SCL; SiCL ; weak<br />

that may impede medium granular medium subangular prismatic to<br />

internal drainage ; structure . to medium angular blocky structure .<br />

ground moraine till blocky structure .<br />

or lacustrine deposits .<br />

S-5 Organic material Organic Fine to coarse Fine texture,<br />

overlying sandy to texture . C; massive .<br />

Vlayey particle size ;<br />

massive structure; no<br />

generalized mode of<br />

deposition.<br />

S-6 Coarse loamy over Medium to coarse Fine to medium Bedrock .<br />

bedrock . texture ; granular texture, C, SiC,<br />

structure . SCL ; medium subangular<br />

to medium angular<br />

blocky structure .<br />

G-1 Medium texture ; Medium texture, Medium texture, Medium texture,<br />

coarse loamy; L, SiL ; granular L, SiL ; medium L, SiL ; may be<br />

blocky to massive structure. subangular stratified<br />

structure ; ground blocky structure . coarse subangular<br />

moraine tills . blocky to massive<br />

structure .<br />

G-2 Coarse texture ; Coarse texture, Coarse texture, Coarse texture,<br />

sandy ; structureless ; S, SL ; granular S, SL; single S, SL ; single<br />

shallow water sediments, structure . grain to medium grain structure,<br />

variable in depth, subangular loose.<br />

overlying ground moraine blocky structure .<br />

tills or lacustrine deposits.<br />

G-3 Medium to coarse Medium to coarse Medium to coarse Sand or gravel,<br />

texture ; coarse texture, L, SL ; texture, L, SL ; possibly over<br />

loamy over sandy granular structure. granular structure . bedrock .<br />

skel<strong>et</strong>al ; structureless ;<br />

fluvial deposits .<br />

87

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