Alternative definitions (2), class: vernacular (0)
Term: Trimline
Definition: A clear boundary line on the wall of a glacier valley that delineates the maximum recent thickness of a glacier. It may be a change in the color of the bedrock, indicating the separation of weathered from unweathered bedrock; the limit of a former lateral moraine or other sediment deposit; or the boundary between vegetated and bare bedrock.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary