Contact relations between rhyolite and basalt on Gardiner River, Yellowstone Park

Research Article| September 01, 1938 Contact relations between rhyolite and basalt on Gardiner River, Yellowstone Park CLARENCE N. FENNER CLARENCE N. FENNER Search for other works by this author on: GSW Google Scholar GSA Bulletin (1938) 49 (9): 1441–1484. https://doi.org/10.1130/GSAB-49-1441 Article history received: 28 Mar 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 CLARENCE N. FENNER; Contact relations between rhyolite and basalt on Gardiner River, Yellowstone Park. GSA Bulletin 1938;; 49 (9): 1441–1484. doi: https://doi.org/10.1130/GSAB-49-1441 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 In an area on Gardiner River, a flow of rhyolite followed a small valley previously eroded in a basaltic surface. Remarkable contact effects were produced.In many places the rhyolite penetrated deeply into the basalt as complex networks of veins and dike-like bodies, which ramify through the basalt in intricate patterns. Corrosive action of the rhyolite upon the basaltic surface carried away material bodily and effected changes in the original channel. The composition of the basalt near contacts was greatly modified. Basaltic constituents were removed and rhyolitic constituents were substituted in such a manner that the compositions of altered rocks lie on straight lines between basalt and rhyolite.The facts of occurrence are clear. In attempting to explain them it has seemed necessary to attribute properties to the rhyolitic magma somewhat at variance with those usually postulated. 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.