Determination of Finite Strain and Initial Shape from Deformed Elliptical Objects

Research Article| August 01, 1970 Determination of Finite Strain and Initial Shape from Deformed Elliptical Objects DAVID ELLIOTT DAVID ELLIOTT Department of Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, Maryland 21218 Search for other works by this author on: GSW Google Scholar Author and Article Information DAVID ELLIOTT Department of Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, Maryland 21218 Publisher: Geological Society of America Received: 17 Nov 1969 Revision Received: 25 Feb 1970 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1970, 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 (1970) 81 (8): 2221–2236. https://doi.org/10.1130/0016-7606(1970)812221:DOFSAI2.0.CO;2 Article history Received: 17 Nov 1969 Revision Received: 25 Feb 1970 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation DAVID ELLIOTT; Determination of Finite Strain and Initial Shape from Deformed Elliptical Objects. GSA Bulletin 1970;; 81 (8): 2221–2236. doi: https://doi.org/10.1130/0016-7606(1970)812221:DOFSAI2.0.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 To determine finite strain from material such as deformed pebbles and oölites, it is essential to consider the initial shape and orientation of the particles. The ellipsoidal objects are studied as ellipses on plane sections. The distribution of axial ratios and orientations of undeformed particles is used as the basis for a classification of initial distributions. Simple and general equations relating the initial and deformed shape and orientation of the particles are derived by considering the matrix algebra. A shape factor grid enables accurate calculation of the magnitude and orientation of the strain ellipse. A variety of important initial distributions can be determined and used. The sudden onset of continuous cleavage and oriented textures observed in some orogenic areas is partially due to the effect of the initial shape of crystals, grains, and clastic particles. 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.