A bleached eluvial horizon – claric material that has lost iron oxides and/or organic matter due to clay migration, podzolization, or redox under stagnant water. Diagnostic for parts of Podzols, Retisols and Planosols qualifiers.
Arguments
- pedon
A
PedonRecord.- min_thickness
Minimum thickness in cm (default 1, per WRB 2022). The albic horizon has no canonical thickness gate; we keep a token min so that fully-NA layers don't pass.
Details
Sub-tests:
test_claric_munsell– Munsell criteria of claric material (Ch 3.3.4).
Designation pattern E or Eg also serves as positive
evidence when Munsell columns are missing (proxy path).