Marine Ice-Pushed Boulder Ridge, Beaufort Sea, Alaska

A steep-faced boulder ridge up to 4 m high by 300 m long was encountered along the arctic coast east of Prudhoe Bay, Alaska, in the summer of 1979. Marine occurrences of similar ridges are rare. Since ice-push sorts cobble- and boulder-sized material in the construction of a ridge, recent onshore ex...

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Bibliographic Details
Published in:ARCTIC
Main Author: Barnes, Peter W.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1982
Subjects:
Coasts
Fast ice
Ice ride-up
Alaskan Beaufort Sea
Camden Bay region
Alaska
Prudhoe Bay region
Arctic
Beaufort Sea
Prudhoe Bay
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65382
Description
Summary:A steep-faced boulder ridge up to 4 m high by 300 m long was encountered along the arctic coast east of Prudhoe Bay, Alaska, in the summer of 1979. Marine occurrences of similar ridges are rare. Since ice-push sorts cobble- and boulder-sized material in the construction of a ridge, recent onshore excursions of ice due to wind stress on the fast ice are believed to be responsible for building the boulder ridge. Ice push is a mechanism that preferentially sorts cobble- and boulder-sized material from 1-2 water depths and that forms boulder ridges in areas of high boulder concentrations.Key words: marine ice-pushed boulder ridge, Beaufort Sea, Alaska

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