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Build the canonical Luvisol fixture

Source: R/utils-fixtures.R
make_luvisol_canonical.Rd

Synthetic temperate-zone Luvisol on loess: clear textural differentiation, Bt with clay coatings, high base saturation, high- activity clay. By construction:

  • argic: PASSES on horizon Bt1 (clay increase from E (18%) to Bt1 (35%) gives ratio 1.94 in the 15-40% band; thickness 25 cm; texture clay loam; no glossic features).

  • ferralic: FAILS (CEC/clay ~ 45 cmol_c/kg clay in the Bt – well above the 16 cmol_c/kg threshold).

  • mollic: FAILS (A horizon: moist value 4 > 3, thickness 10 cm < 20 cm).

Usage

make_luvisol_canonical()

Value

A PedonRecord.