Define the lamellae in soil horizons?

Lamellae in soil horizons refer specifically to thin layers within those horizons. These distinct layers can vary in composition and properties, often indicating the processes that have occurred within the soil profile, such as glacial action or the accumulation of organic material. The presence of lamellae can significantly influence soil behavior, drainage, and nutrient availability.

Understanding this term is important because it highlights the complexity of soil formation and stratification, showing that even within a single horizon, there can be multiple layers with different characteristics that contribute to the overall soil environment. The other options refer to components or layers not specifically associated with the definition of lamellae, which reinforces the significance of recognizing lamellae as distinct thin layers within soil horizons.