Which type of soil is most likely described as having a chroma of 1-2?

Soil chroma is a critical aspect of soil color that indicates the intensity or brightness of the color. A chroma value of 1-2 suggests a very low intensity of color, leading to the interpretation that the soil may be quite dark. Dark valued soils often contain higher organic matter which contributes to the deep coloration. This characteristic is typically associated with soils rich in nutrients and organic material, which enhances the soil structure and fertility.

In this context, dark valued soils will generally exhibit lower chroma values due to the organic matter content and the complex ways in which color and soil properties interact. Other soil types, such as sandy or limestone soils, usually display higher chroma values. Clay soils can have a range of chroma depending on their composition but do not consistently align with the low values of 1-2 associated with dark valued soils. Thus, a chroma of 1-2 is most indicative of dark valued soil.