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Grinnell Glacier, Glacier National Park, Montana
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1939
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Historical GeographyGlacierEngineeringGeomorphologyAmerican ArchaeologyArchaeologyGlacial ProcessGlacier National ParkSocial SciencesHistory Of ScienceIntellectual HistoryGrinnell GlacierGlaciologyGeographyEnvironmental HistoryGeologyGsa Bulletin 1939CryosphereInterdisciplinary StudiesHumanitiesNatural SciencesAnthropology
Research Article| May 01, 1939 Grinnell Glacier, Glacier National Park, Montana GEORGE R. GIBSON; GEORGE R. GIBSON Search for other works by this author on: GSW Google Scholar JAMES L. DYSON JAMES L. DYSON Search for other works by this author on: GSW Google Scholar GSA Bulletin (1939) 50 (5): 681–696. https://doi.org/10.1130/GSAB-50-681 Article history received: 23 Nov 1938 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation GEORGE R. GIBSON, JAMES L. DYSON; Grinnell Glacier, Glacier National Park, Montana. GSA Bulletin 1939;; 50 (5): 681–696. doi: https://doi.org/10.1130/GSAB-50-681 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Stratification due to the annual accumulation of snow is well exhibited in Grinnell Glacier. Layers of snow in the narrow firn zone at the head of the glacier are wedge-shaped and have a steep initial tilt toward the glacier front. Weight of overlying layers forces the earlier-formed layers to rotate so that after travelling a relatively short distance they assume a backward dip which gradually increases until, approximately halfway between cirque wall and glacier front, a maximum of 45 degrees is attained.Detailed study of the position of ice strata in various parts of the glacier has yielded information on the nature of the ice motion, the age of the ice, and its probable thickness.Available records dating back to 1897 and direct observation by the authors over a 4-year period indicate that Grinnell Glacier has been reduced to about half the size it was in 1900, and that the recession during recent years has been most rapid. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.