How is it possible to have leached soils within a few kilometers of calcified soils?

Leached soils typically occur in areas with high rainfall and acidic conditions, which can cause minerals and nutrients to be washed away. On the other hand, calcified soils are formed in arid regions where evaporation exceeds precipitation, leading to the accumulation of minerals like calcium carbonate. The proximity of leached and calcified soils within a few kilometers could be due to local variations in topography, drainage patterns, or geological formations that create microclimates with different soil development processes.