Where can glacial till typically be found in Massachusetts?

Glacial till is a type of unsorted glacial sediment that is deposited directly by the ice as it melts. In Massachusetts, glacial till is typically found on top of the bedrock, except in locations where the bedrock is exposed, such as cliffs or outcrops. This is due to the processes of glaciation where thick ice sheets advanced and retreated, leaving behind a mixture of soil, rocks, and debris in various landscapes.

The accumulation of glacial till often results in a layer overlying the underlying bedrock, creating diverse soil profiles that can support different ecosystems. This context is critical for understanding land use, agriculture, and natural resource management in the region.

Other locations mentioned in the choices, such as low-lying areas, beneath rivers and lakes, or exclusively in forested regions, do not accurately reflect the general occurrence of glacial till. It is primarily the relationship to the underlying bedrock where glacial till is distinctive, making its presence on top of bedrock the prevalent characteristic in Massachusetts.