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Seismic Evidence Supporting a New Interpretation of the Cody Terrace Near Cody, Wyoming

1961; Geological Society of America; Volume: 72; Issue: 4 Linguagem: Inglês

10.1130/0016-7606(1961)72[547

1943-2674

John H. Moss, William E. Bonini,

Rangeland and Wildlife Management

Research Article| April 01, 1961 Seismic Evidence Supporting a New Interpretation of the Cody Terrace Near Cody, Wyoming JOHN H MOSS; JOHN H MOSS Dept. Geology, Franklin & Marshall College, Lancaster, Pa Search for other works by this author on: GSW Google Scholar WILLIAM E BONINI WILLIAM E BONINI Dept. Geological Engineering, Princeton University, Princeton, N. J Search for other works by this author on: GSW Google Scholar Author and Article Information JOHN H MOSS Dept. Geology, Franklin & Marshall College, Lancaster, Pa WILLIAM E BONINI Dept. Geological Engineering, Princeton University, Princeton, N. J Publisher: Geological Society of America Received: 18 Feb 1959 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1961, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1961) 72 (4): 547–555. https://doi.org/10.1130/0016-7606(1961)72[547:SESANI]2.0.CO;2 Article history Received: 18 Feb 1959 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation JOHN H MOSS, WILLIAM E BONINI; Seismic Evidence Supporting a New Interpretation of the Cody Terrace Near Cody, Wyoming. GSA Bulletin 1961;; 72 (4): 547–555. doi: https://doi.org/10.1130/0016-7606(1961)72[547:SESANI]2.0.CO;2 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 Seismic studies of the Cody terrace complex bordering the Shoshone River near Cody, Wyoming, disclose: (1) no relationship between surficial terrace form and underlying bedrock topography; (2) irregular bedrock topography with relief up to 50 feet; (3) thickness of gravel and silt overlying bedrock averaging about 60 feet and reaching a maximum of more than 100 feet. These data suggest that the Cody terrace is an alluvial terrace, not a rock-cut terrace as previously postulated.Although interrupted by the Shoshone canyon, the gravel in the Cody terrace is believed to be the correlative of the gravel in the lower terrace complex in the South Fork valley which is traceable into valley-train deposits fronting the moraine at Ishawooa. The Cody gravel is therefore in part glaciofluvial.The Cody terrace was probably formed in three stages: (1) cutting of the broad bedrock floor beneath the gravel during a period of lateral cutting and slow downcutting from the Powell surface; (2) deposition of a gravel fill to the height of the highest Cody bench during a period of aggradation associated with advance of glaciers in the upper Shoshone Valley; (3) cutting of the benches of the Cody terrace in the fill by lateral planation and slow downcutting during and after retreat of the ice from the Shoshone drainage area.These results underscore the usefulness of seismic studies in geomorphic work. 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.