Erosion surfaces in northwestern Maine
Swarzenski, Wolfgang Victor
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In the progress of Boston University's geological mapping program in the Rangeley Lake region of northwestern Maine the occurrence of conspicuously level areas at varying, yet definite elevations was noted. Essentially horizontal or but slightly inclined areas, independent of structure and lithology, are found typically as breaks in slope on mountain flanks; others occur ar summit elevations of ridges or constitute the floors of certain basins and valleys. The striking occurrence of these levels of "terraces" was a stimulus toward the undertaking of the present studies which include the mapping of persistent levels and an attempt to explain their origin. The region under consideration is covered by the following quadrangle maps: Phillips, Rangeley, Stratton, Kennebago Lake, Oquossoc, and cupsuptic, Maine. The area includes the major part of the Blue Mountains, comprising isolated peaks and ranges which continue in general the northeasterly trend of the White Mountains of New Hampshire. Several peaks reach above 4000 feet elevation, such as Sugarloaf Mountain (4237 ft.), Bigelow Mountain(4150 ft.), Mount Abraham (4049 ft.), Saddleback Mountain (4116 ft.). There are many peaks reaching elevations of 3000 feet or more. Relief is highly variable, ranging from a few hundred feet to 3000 feet, owing to the irregular distribution of mountains. The region is maturely dissected, with major drainage to the east, southeast, and south, into the Kennebee and Androsooggin Rivers. [Truncated.]
Thesis (Ph.D.)--Boston University.
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