When assessing a soil that is dense till, which layer should be utilized when analyzing depths?

In the context of dense till soils, all the layers mentioned—Orthstein, Placic, and Paralith—hold significance during analysis. Dense till is generally a compacted mixture of soil and sediment left by glacial activity, and it often contains various layers with distinct properties and characteristics affecting soil behavior.

Orthstein refers to a layer that has high density and is typically silty or clayey, which can provide insights into the soil's compaction and water-holding capacity. Placic layers are characterized by their iron accumulation and can influence drainage and root growth, thus offering critical information about the soil's suitability for certain plants or agricultural practices. Paralith comprises weathered bedrock, which can affect root penetration and water movement. Each of these layers provides distinct information that is vital for a comprehensive understanding of the soil profile and its management.

Analyzing all these layers together allows for a better assessment of the soil's depth, characteristics, and overall functionality, which is essential for land use planning, agriculture, and environmental management. Recognizing the importance of these various layers illustrates a holistic approach to soil assessment, ensuring that decisions made are based on a well-rounded understanding of the soil's properties and behavior.