Which horizon generation occurs because extensive leaching concentrates recalcitrant minerals during pedogenesis?

💡 Explanation

Oxic horizon formation proceeds slowly because extreme weathering breaks down most minerals, leaving only iron and aluminum oxides; therefore oxic horizons develop gradually rather than argillic horizons which involve simply clay translocation.

• Which risk increases for structures founded upon unstable alluvial soils?
• Which outcome is caused by increased rates of longshore drift carrying sediment past a headland composed of chalk bedrock?
• Which outcome results when subsidence occurs unevenly beneath a levee during a prolonged drought?
• Which atmospheric phenomenon results when Coriolis force deflects geostrophic winds around a high-pressure system at altitude?
• Which geographic outcome increases surrounding arable land degradation when overgrazing eliminates vegetation?
• Which mechanical process causes frequent shallow earthquakes along a transform plate boundary?