19th century rock glacier separation leads to ultimate stagnation in Norway.
A rock glacier formed in the 19th century on the Lyngen Peninsula in Norway when debris from a corrie headwall covered two small glaciers. As the glaciers melted, the rock glacier separated from them and advanced into the valley. The rock glacier's ice core can be replenished by a thin corrie glacier, and it can survive even when nearby debris-free glaciers are retreating. However, if the rock glacier loses its ice source, it will eventually stop moving.
