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bolson U.S.
(ˈbəʊlsən, ‖ bolˈson)
[Sp., augmentative of bolsa purse.]
In the south-western U.S. and Mexico, a basin-shaped depression surrounded by mountains. Also bolson-plain.
1838A. Ganilh Mexico v. Texas 9 A desert known, in the maps [of Mexico], under the name of ‘Bolson of Mapimi’. 1847G. F. Ruxton Adv. Mexico xiii. 96 The sun was fast sinking behind the rugged crest of the ‘Bolson’, tinging the serrated ridge..with a golden flood of light. 1904Amer. Geol. Sept. 164 The bolson plains may be considered as sections of an upraised peneplain surface in its earliest infancy, at a stage in which they are as yet untouched by stream-action. 1964F. O'Rourke Mule for Marquesa 15 It would be..the Bolsón, ten thousand square miles of the high desert, cupped within the waterless mountains. |