Pingos in the Brooks Range, Northern Alaska, USA
Hamilton TD and Obi CM. 1982. Pingos in the Brooks Range, Northern Alaska, USA. Arctic and Alpine Research. 14(1):13-20
Some 70 pingos occur at 27 separate localities within and near the Brooks Range. The pingos are distributed through mountain valleys at altitudes up to 725 m and in terrain glaciated as recently as late Wisconsinan time. Most are open-system forms; possible closed-system pingos are present at only a single locality in a northern valley. Some pingos occur on thick alluvial or lacustrine sediments, but many seem to be localized above near-surface bedrock and possibly are related to northeast-trending fracture systems. Pingos are particularly abundant in the Koyukuk and Chandalar drainage systems of the south-central Brooks Range, where they may be associated with structural features of regional extent.
- Type
- Journal Article
- Authors
- Hamilton, Thomas; Obi, Curtis
- Units
- GAAR
- Keywords
- Brooks Range, Chandalar River drainage, Distribution, Gates Of The Arctic National Park And Preserve, Geology, Geomorphology, Koyukuk River drainage, pingos