Effects of Gamma Radiation on the Experimental Deformation of Calcite and Certain Rocks

Research Article| September 01, 1957 EFFECTS OF GAMMA RADIATION ON THE EXPERIMENTAL DEFORMATION OF CALCITE AND CERTAIN ROCKS JOHN HANDIN; JOHN HANDIN SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 Search for other works by this author on: GSW Google Scholar D. V HIGGS; D. V HIGGS SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 Search for other works by this author on: GSW Google Scholar D. R LEWIS; D. R LEWIS SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 Search for other works by this author on: GSW Google Scholar P. K WEYL P. K WEYL SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 Search for other works by this author on: GSW Google Scholar Author and Article Information JOHN HANDIN SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 D. V HIGGS SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 D. R LEWIS SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 P. K WEYL SHELL DEVELOPMENT COMPANY, EXPLORATION AND PRODUCTION RESEARCH DIVISION, PUBLICATION NO. 118 Publisher: Geological Society of America Received: 21 Mar 1957 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1957, 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 (1957) 68 (9): 1203–1224. https://doi.org/10.1130/0016-7606(1957)68[1203:EOGROT]2.0.CO;2 Article history Received: 21 Mar 1957 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 HANDIN, D. V HIGGS, D. R LEWIS, P. K WEYL; EFFECTS OF GAMMA RADIATION ON THE EXPERIMENTAL DEFORMATION OF CALCITE AND CERTAIN ROCKS. GSA Bulletin 1957;; 68 (9): 1203–1224. doi: https://doi.org/10.1130/0016-7606(1957)68[1203:EOGROT]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 Calcite single crystals, Yule marble, and certain other rocks were deformed dry at room temperature under constant confining pressures of 2000 or 2750 bars at a strain rate of 1 per cent per minute. Uniaxial compression and extension experiments were made; for the marble, parallel and normal to cv fabric maximum; for the single crystals, parallel to cv and normal to m {101̄0}. Yule marble exposed to 17 megaroentgens of gamma radiation before deformation turned from white to bright blue when deformed. Intensity of color varied with orientation and amount of strain. Irradiated single crystals changed from amber to ultramarine blue when the greatest principal stress paralleled cv. No color change occurred when the least principal stress paralleled cv. Irradiation resulted in small reductions in yield stress of most of the rocks, but not of the single crystals.Petrographic studies of the single crystals revealed that established principal deformation mechanisms, twin gliding on e{011̄2} and translation gliding on r{101̄1}, were still operative and confirmed that blue color was associated with translation gliding only. In Yule marble blue grains had deformed by translation, clear grains by twinning.Thermoluminescence studies indicated that compression along cv yielded a new peak in the glow curves (at 280°), not present in undeformed irradiated calcite. Extension along cv increased the magnitude of the glow curve at about 240° but gave rise to no new peaks. 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.