Where are mineral soil flats most commonly found?

Mineral soil flats are most commonly found in interfluves and floodplain terraces due to the specific geomorphological processes that shape these environments. Interfluves are areas of higher ground situated between two river valleys, where the deposition of sediments is prevalent because of less frequent flooding, allowing mineral-rich soils to form over time. Floodplain terraces are similarly characterized by sedimentation from river overflow events, leading to the accumulation of mineral soils as rivers deposit alluvium during floods.

These environments provide the right conditions for mineral soil formation, such as suitable parent materials and drainage conditions, which are less common in the other areas listed. Urban areas may have disturbed soils due to human activity, coastal regions often have more organic or sandy soils influenced by marine processes, and mountain ranges typically have thin and rocky soils rather than the deep, fertile mineral soils found in interfluves and floodplain terraces. Thus, the prevalence of mineral-rich soil flats aligns closely with the characteristics and processes associated with interfluves and floodplain terraces.