Morphology of an Arctic River Bar.
LOUISIANA STATE UNIV BATON ROUGE COASTAL STUDIES INST
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River bars are a common landscape element in the valleys of the coastal plain of northern Alaska. They are especially numerous in the Colville River delta, the largest delta north of the Brooks Range. Most river bars in the Arctic are submerged for only a short period of time during river breakup, and most of those occurring on the lee side of river channels are bordered by sand dunes. Putu bar, located near the head of the Colville delta, is of this type. Like other river bars, it possesses a number of small forms. The structural and temporal variation of some 18 microrelief features was investigated during the 1971 field season, which lasted from before the initiation of snowmelt in late winter to late summer. Each feature was classified as to when it formed, how long it persisted, and what processes were involved.
- Geology, Geochemistry and Mineralogy