The B horizon can often be determined in a profile by looking for the location of blocky peds which can be readily seen. They are often the first structure formed in a soil, because their formation only requires vertical cracking in the soil. Structureless C horizons generally lack any structural aggregation. Soil Color Soil color is a property that will give important information about the soil's characteristics. Note the page from a Munsell color book and the Earth Colors book, above.
Soil color is determined by comparing the color of the soil to the chips in the color charts.
Hue is the dominant spectral color of the rainbow - yellow, reds, orange. The value is the relative darkness or lightness, and the chroma is the purity or strength of the color. Value is expressed as the numerator of the fraction and is along the left hand margin of the page. Value is the relative darkness or lightness of the soil color. Chroma a is along the bottom, and is the denominator of the fraction.