Portal de Periódicos da CAPES

PRE-CENOZOIC HISTORY OF SUPLEE-IZEE DISTRICT, OREGON: IMPLICATIONS FOR GEOSYNCLINAL THEORY

1964; Geological Society of America; Volume: 75; Issue: 10 Linguagem: Inglês

10.1130/0016-7606(1964)75[1037

1943-2674

William R. Dickinson, L.W. Vigrass,

Geochemistry and Geologic Mapping

Research Article| October 01, 1964 PRE-CENOZOIC HISTORY OF SUPLEE-IZEE DISTRICT, OREGON: IMPLICATIONS FOR GEOSYNCLINAL THEORY WILLIAM R DICKINSON; WILLIAM R DICKINSON DEPT. GEOLOGY, STANFORD UNIVERSITY, STANFORD, CALIF.; IMPERIAL OIL LTD., CALGARY, ALBERTA, CANADA Search for other works by this author on: GSW Google Scholar LAURENCE W VIGRASS LAURENCE W VIGRASS DEPT. GEOLOGY, STANFORD UNIVERSITY, STANFORD, CALIF.; IMPERIAL OIL LTD., CALGARY, ALBERTA, CANADA Search for other works by this author on: GSW Google Scholar Author and Article Information WILLIAM R DICKINSON DEPT. GEOLOGY, STANFORD UNIVERSITY, STANFORD, CALIF.; IMPERIAL OIL LTD., CALGARY, ALBERTA, CANADA LAURENCE W VIGRASS DEPT. GEOLOGY, STANFORD UNIVERSITY, STANFORD, CALIF.; IMPERIAL OIL LTD., CALGARY, ALBERTA, CANADA Publisher: Geological Society of America Received: 23 Oct 1962 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1964, 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 (1964) 75 (10): 1037–1044. https://doi.org/10.1130/0016-7606(1964)75[1037:PHOSDO]2.0.CO;2 Article history Received: 23 Oct 1962 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation WILLIAM R DICKINSON, LAURENCE W VIGRASS; PRE-CENOZOIC HISTORY OF SUPLEE-IZEE DISTRICT, OREGON: IMPLICATIONS FOR GEOSYNCLINAL THEORY. GSA Bulletin 1964;; 75 (10): 1037–1044. doi: https://doi.org/10.1130/0016-7606(1964)75[1037:PHOSDO]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 Marine strata of Permian, Late Triassic, Jurassic, and Late Cretaceous age have an aggregate thickness of 35,000–40,000 feet in the Suplee-Izee district of central Oregon. This deformed but unmetamorphosed eugeosynclinal sequence is composed largely of material derived from within the eugeosynclinal belt and consists dominantly of andesitic debris and of detritus eroded from internal tectonic lands. Unconformities and coarse conglomerates show that epeirogeny or orogeny and subaerial erosion occurred at least locally during nearly every age of the standard geologic column from the middle of the Permian until late in the Cretaceous.If the history of the Suplee-Izee district is considered a spot sample typical of the western Cordilleran eugeosynclinal region, two general interpretations are suggested: (1) The term “eugeo-syncline” is applied generally to a mass of stratified rocks accumulated during a complex history of diastrophism, volcanism, and sedimentation in separate, short-lived downwarps or basins. The term is not applied in practice to any particular topographic feature or to a single, simple tectonic feature. (2) Sinking of the eugeosynclinal pile resulted largely from transfer of volcanic magmas from the depths to the surface. This volcanism was coupled with crustal foundering into the sites of magma generation. 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.