Parent material chemical property - second 

Attribute definition
Attribute Label PMCHEM2
Title Parent material chemical property - second 
Description

The chemical composition class of the second underlying parent material if present.

Classes Parent Material Chemical Property: 8 classes. First used in SNT 2.0. Renamed from PMCHEM in SNT v1.0.


Classes
Code Class Description
UD Undifferentiated

Undifferentiated acidity and/or calcareousness

EA Extremely / Strongly Acidic

pH < 5.6

AN Medium Acid to Neutral

pH 5.6 - 7.4

WC Weakly Calcareous

< 6 CaCO3 equivalent (%)

VC Moderately / Very Strongly Calcareous

6 - 40 CaCO3 equivalent (%)

EC Extremely Calcareous

> 40 CaCO3 equivalent (%)

SA Calcareous and Saline

Calcareous and Saline

- Not Applicable

Not Applicable

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