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![image preview](https://digitalmaine.com/mgs_geologic_field_photos/22754/preview.jpg)
Contributing Institution
Maine Geological Survey
Document Type
Image
Identifier
70939
Description
Topographic cross section view looking northwest up the Bear River Valley at Mother Walker Falls gorge (shown with 3x vertical exaggeration and 2x horizontal exaggeration (1:12,000-scacle)). This U-shaped valley was scoured out by glacial ice flow, while powerful meltwater flow at the base of the ice initiated formation of Mother Walker Falls gorge (see Figures 9 and 10). The modern Bear River is now confined to the gorge in this reach which may be called an “inner gorge” – a gorge within a larger valley.
Project Name: STATEMAP Old Speck Surficial
Exact Creation Date
3-16-2023
Location
Grafton Twp
Supplemental Rights
Credit must be given to the photographer and the Maine Geological Survey when this photo is displayed, reproduced, distributed and/or used in derivative works.
Keywords
STATEMAP; surficial geology; Old Speck Mountain quadrangle; u-shaped valley; glacial erosion; Mother Walker Falls; Bear River; Grafton Notch State Park; cross section