Science / Geology / B-Horizon: The intermediate layer in a soil, situated below the A-horizon and consisting of clays and oxides. Also called the zone of accumulation.
Science / Geology / Pedalfer: A common soil type in humid regions, characterized by an abundance of iron oxides and clay minerals deposited in the B-horizon by leaching. MORE
Science / Geology / C-Horizon: The lowest horizon of a soil profile. It is below the B-horizon and is made up of weathered bedrock. MORE