Synthetic tropical-humid Acrisol on weathered gneiss: argic horizon at Bt1 with low-activity clay (CEC/clay ~ 17 cmol_c/kg clay) and low base saturation (BS ~ 25%). v0.9.310: in Bt1 and Bt2 the exchangeable Al (0.4 until then) exceeds the exchangeable bases (lowered from 1.15 to 0.72 cmolc/kg, so that the ECEC stays below 6 cmolc/kg clay, Geric), as the WRB 2022 Acrisols ask for in 50-100 cm (Ch 4, p. 119); with Al below the bases the profile is a Lixisol. By construction:
Value
A PedonRecord.