Which term refers to zones or splotches of color much higher than the matrix in soil?

The term that refers to zones or splotches of color much higher than the matrix in soil is concentrations. Concentrations indicate areas where certain minerals or compounds are present in higher quantities compared to the surrounding soil matrix. This can result in distinct coloration due to the accumulation of specific elements, oxides, or organic materials, creating visually discernible patches.

In soil science, these variations in color often suggest underlying processes such as mineral weathering, organic matter accumulation, or changes in soil drainage patterns. These concentrations can provide valuable information about soil health, fertility, and the historical factors that have influenced soil formation in that particular area. Understanding these differences is essential for professionals working with soil management, agriculture, or environmental studies, as they can indicate areas of interest for further investigation or intervention.