Which term refers to a tunnel-like burrow filled with soil from another horizon?

• A. Krotovina
• B. Burrow
• C. Root channel
• D. Fossil

Answer: (A)

Krotovina refers to a tunnel-like burrow that has been filled with soil from a different horizon. In soil descriptions, biogenic tunnels created by organisms or roots are common, but the key feature is the infill: the material filling the tunnel differs in color, texture, or composition from the surrounding surrounding soil. That distinct infill marks it as a krotovina. A general burrow isn’t defined by the nature of its fill, a root channel is specifically a space created by roots, and a fossil is any preserved remains or traces, not necessarily a filled tunnel with allochthonous material. So the term that captures a tunnel-like burrow filled with soil from another horizon is krotovina.