NATURE AND DISTRIBUTION OF GLACIERS, NEOGLACIAL MORAINES, AND ROCK GLACIERS, EAST-CENTRAL BROOKS RANGE, ALASKA

The range was just high enough to support cirque glacierization during the middle to late Holocene; presently glaciers are shrinking. The l33 glaciers in the field area are all above l500 m altitude. The transition from existing glaciers through tonque-shaped to lobate rock glaciers is characterized by increasingly symmetric orientations and expanding altitudinal and areal distributions. Lobate rock glaciers are weakly asymmetric indicating decreased climatic sensitivity and increased screening by surrounding terrain relative to the other forms. -from Authors