National Ecological Framework (11 of 23)

Parent Material Textural Group

These data are presented as a set of components within each polygon.  The following attributes are included:

Name Description
CMP Component Number (arbitrary)
PERCENT Percent of polygon occupied by the component
TEXTURE Parent Material Textural Group

Soil texture indicates the relative proportions of the various soil separates (sand, silt, clay) as described in the Canadian System of Soil Classification.

Soil separates are mineral particles, <2.0 mm in equivalent diameter, ranging between specified size limits: sand 2.0-0.05 mm; silt 0.05-0.002 mm: clay <0.0002 mm.

Coarse fragments are rock fragments >2.0 mm in diameter and include: gravel 0.2 -7.5 cm and cobbles 7.5-25.0 cm.

The following table shows the class definitions that are used.

Code Texture Group
CL CLAY LOAM
KCL CLAY LOAM >35% Coarse Fragments
CY CLAY
LM LOAM
KLM LOAM >35% Coarse Fragments
SD SAND
KSD SAND >35% Coarse Fragments
SL SANDY LOAM
KSL SANDY LOAM >35% Coarse fragments
KSP COBBLY SAND
O ORGANIC
# Not Applicable (water, ice or urban)

Source:

Soil Landscapes of Canada (SLC) V.2.2 (1996), National Soil DataBase, Canadian Soil Information System.  Available at: /cansis/nsdb/slc/v2.2/

Shields, J. A., C. Tarnocai, K.W.G. Valentine, and K. B. MacDonald. 1991. Soil Landscapes of Canada - Procedures Manual and User's Handbook. LRRC Contribution Number 88-29, Land resource Research Centre, research Branch, Agriculture Canada, Ottawa,74 pp. This manual is superceded by the Internet version available at: /cansis/nsdb/slc/index.html