Test the salic horizon EC * thickness product (WRB 2022)

Tests whether each candidate layer's product ec_dS_m * (bottom_cm - top_cm) reaches the canonical WRB 2022 threshold (Ch 3.1.20, p. 49):

• >= 450 dS/m * cm for the primary path (EC \>= 15);

• >= 240 dS/m * cm for the alkaline path (EC \>= 8 with pH(H2O) \>= 8.5).

The path used per layer is taken from a prior test_ec_concentration result (its details[[i]]\$path field). When no prior is supplied, every candidate is treated as "primary" and the 450 threshold is applied uniformly.

Usage

test_salic_product(
  h,
  min_product = 450,
  alkaline_min_product = 240,
  ec_path_lookup = NULL,
  candidate_layers = NULL
)

Arguments

h

Horizons table.

min_product

Primary product threshold (default 450).

alkaline_min_product

Alkaline-path product threshold (default 240).

ec_path_lookup

Optional named list (keys = layer index as character) returning either "primary" or "alkaline" per layer – typically built by passing test_ec_concentration(...)\$details.

candidate_layers

Layer index restriction (typically the layers that already passed the primary EC gate).