Geography • Physical GeographyMedium
In pedology, which master soil horizon is characterized by the accumulation of illuvial clay, iron, aluminum, or organic compounds?
A. O horizon
B. A horizon
C. B horizon✓ Correct Answer
D. C horizon
💡 Solution & Explanation
The B horizon represents the subsoil layer where minerals, clays, and iron oxides leached from upper soil horizons accumulate through the process of illuviation. The O horizon consists primarily of organic litter, while the A horizon is the topsoil rich in humus. Pedology and soil profile classifications are regular features in physical geography questions.
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