L1 /
4
CH3041
SOIL HORIZONS
• O Horizon = Organic matter
• A
Horizon = Topsoil B
Horizon = Subsoil
• C
Horizon = weathered parent rock
Laterite profile
(high rainfall) O
(tropics)
(high rainfall) O
(tropics)
krasnozem A
contains Fe3O4
& clay minerals
contains Fe3O4
& clay minerals
vesicular laterite B
contains FeOx
or Al2O3
contains FeOx
or Al2O3
white & red clays C
BASALT (volcanic: olivines, pyroxenes..)
Podsol profile
high rainfall
high rainfall
(temperate)
