What is a till plain characterized by?

A till plain is characterized by a flat to undulating area that is primarily composed of glacial till. Glacial till is unsorted material that is deposited directly by glacial ice as it melts, resulting in the accumulation of a mixture of particle sizes—from clay to boulders. This leads to relatively level terrain, which is a key feature of till plains, allowing for agricultural development and various land uses.

The flatness or gentle undulation of these plains is a direct result of the glacial process, where ice sheets advanced and retreated, shaping the landscape without significant erosion. This distinct stratigraphy and landform contrast with more rugged terrains or steep landscapes typically associated with areas subject to more active geological processes or erosional forces. In summary, the defining characteristic of a till plain is its flat to gently rolling topography that is underlain by this unique glacial deposit.