Abstract
The thermoelastic analysis of the possible stable stress-free equilibrium states of polycrystals provides a theoretical way of distinguishing “true” twins from random intergrowths. We analyze in detail a four-fold cyclic twin in quartz, and we show that this gives also the basis for a new technique of geobarothermometry. To obtain the barothermometric function, the simultaneous dependence upon the external pressure and temperature of the lattice-parameter has been estimated; an explicit five-parameter, temperature-corrected version of the Thurston isothermal constitutive equations is presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
