Mouth Bar | Article about Mouth Bar by The Free Dictionary
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a ledge that is located at the floor of a tributary valley of a mountain river and rises above the floor of a main valley that has been scoured by a glacier. Mouth bars form because glacial erosion in the main valley was more rapid than in the tributary valley. They reach a relative elevation of 200–300 m. Streams that flow over a mouth bar form rapids or waterfalls. Mouth bars are frequently subjected to the postglacial erosion of streams, and they appear as terraces on the slopes of the mouths of tributary valleys.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive
Simply trim up your outboard, pass over the creek mouth bar
, and you'll find a new world of backcountry fishing.
The lower part of the Tredian Formation was deposited in the channel bar, mouth bar
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The sands are mostly barrier bars and distributary mouth bars
. Reservoir D (Figure 16) is barrier bar to tidal sands.