What is indicated by horizons followed by the letter "b"?

Horizons in soil profiles that are followed by the letter "b" indicate buried horizons. This designation is used in soil taxonomy to signify layers that were originally formed at the surface but have since been covered by subsequent layers of soil. These buried horizons can contain organic material or remnants of past soil conditions, providing insights into the historical landscape and soil development. Recognizing these horizons is important for understanding soil formation processes, land-use history, and potential agricultural productivity. This is significant when evaluating soil because it informs the soil's characteristics, including its fertility, structure, and potential for supporting vegetation.