2021-Mar-01 Hello metamorphic folk, The no-cost virtual (on-line) thermodynamic modelling workshop<http://e-thermo-workshop-2021.petrochronology.org/>, to be held Monday to Friday, May 10 to 14, 2021, is now open for registration<http://e-thermo-workshop-2021.petrochronology.org/registration/>. Registration deadline: Sunday, April 11, 2021 Enrollment limit: 250 (first-come, first-served) You must register to attend some or all of the workshop. A circular just to registrants will be sent out in the middle-end of April, 2021, after registration closes. It will include a meeting link and password to attend the meeting, or for access to recorded lectures. Workshop details, including topics and presenters<http://e-thermo-workshop-2021.petrochronology.org/topics-and-presenters/>, and logistical information for participants<http://e-thermo-workshop-2021.petrochronology.org/information/>, are provided on the workshop website, as well as at the bottom of this message. We’re looking forward to your participation! Regards, Dave Pattison Jacob Forshaw Doug Tinkham Pierre Lanari Mark Caddick Dave Waters Virtual (on-line) thermodynamic modelling workshop May 10 to 14, 2021 Phase equilibrium modelling: approaches and pitfalls Cost: free Platform: Zoom Time each day (Monday to Friday, May 10 to 14, 2021): 07:00-10:00 Pacific Standard Time 08:00-11:00 Mountain Standard Time 09:00-12:00 Central Standard Time 10:00-13:00 Eastern Standard Time 15:00-18:00 British Summer Time 16:00-19:00 Central European Time 19:30-22:30 India Standard Time 22:00-01:00 China Standard Time/Australian Western Standard Time 23:00-02:00 Japan Standard Time 00:00-03:00 Australian Eastern Standard Time Lecture format: Lectures will be “synchronous”, i.e., “live” (pre-recorded lectures will not be prepared) However, lectures will be recorded and made available to registrants who can’t attend the live lectures Conduct of discussion/Q&A following lectures: For first four days of formal lectures (see schedule below): Moderated, at least initially (questions submitted over Zoom chat or email) As discussion evolves in response to questions and answers, may open up for anyone to speak For last “open” day: To be decided Involvement of Societies and warehousing of workshop materials The following societies support the workshop and have agreed to be repositories for workshop materials on their websites, including: Mineralogical Association of Canada; Mineralogical Society of America; Mineralogical Society of Great Britain & Ireland; Société Française de Minéralogie et de Cristallographie. Workshop content, presenters and schedule On-line workshop: Phase equilibrium modelling: approaches and pitfalls Organizers: Dave Pattison (U Calgary), Jacob Forshaw (U Calgary), Doug Tinkham (Laurentian U), Mark Caddick (Virginia Tech), Pierre Lanari (U Bern), Dave Waters (U Oxford) All practicing and up-and-coming metamorphic geoscientists need to have a nuanced understanding of the potential and the pitfalls of modern phase equilibrium modelling. The aim of the workshop is to present and discuss (1) the most commonly-used phase equilibrium modelling software packages currently available (THERMOCALC, Perplex, Theriak-Domino), focusing on their capabilities and pros/ cons, and (2) the factors influencing the reliability of phase equilibrium modelling, including thermodynamic database/a-X models, effective bulk composition, and kinetics. The virtual (on-line) workshop will comprise eight approximately 1.5-hour sessions of which one third to one half of each session is dedicated to discussion. Workshop materials available to registered participants will comprise electronic copies of presentation slide decks, reference lists and recorded lectures. Topics and presenters: Days 1 and 2: M May 10 and T May 11, 2021 Thermodynamic databases and phase equilibrium modelling software packages M May 10, session 1a: Overview of thermodynamic databases and a-X models (Pierre Lanari) M May 10, session 1b: THERMOCALC and AvePT (Dave Waters) Tu May 11, session 2a: Perplex (Mark Caddick) Tu May 11, session 2b: Theriak-Domino and summary/comparison of different software packages (Doug Tinkham) Days 3 and 4: W May 12 and Th May 13, 2021 Factors influencing the reliability of phase equilibrium modelling W May 12, session 3a: Uncertainties and "best practices" in phase equilibrium modelling (Dave Waters) W May 12, session 3b: Effective bulk composition (Pierre Lanari) Th May 13, session 4a: The influence of kinetics (Dave Pattison, Jacob Forshaw) Th May 13, session 4b: Assessment of databases/a-X models against the natural record (Jacob Forshaw, Dave Pattison) Day 5: F May 14, 2021 Open discussion Topics to be discussed will be based on responses to this question on the registration website What will and won’t be covered in the workshop The workshop assumes a reasonable level of familiarity with phase equilibrium modelling, i.e., it is not an introduction to phase equilibrium modelling. Participants should have a reasonable understanding of: - Why we conduct phase equilibrium modelling - Thermodynamic parameters: Gibbs free energy; enthalpy; entropy; heat capacity; volume (and the relation of these parameters to pressure and temperature); activity; chemical potential - The difference between classical thermobarometry (e.g., garnet-biotite thermometry) and phase diagram-based modelling Concerning the software packages under consideration at the workshop - THERMOCALC, Perple_X and Theriak-Domino - the workshop will not be a “how-to” treatment of any of them, although some program-specific procedural aspects will be discussed. Instead, discussion will focus mainly on the differences, strengths and weaknesses of them. It would be beneficial to have used one or more of the three phase equilibrium software packages, but it is not obligatory. Each software package has a web site with tutorials: https://hpxeosandthermocalc.org/ https://titan.minpet.unibas.ch/minpet/theriak/theruser.html http://www.perplex.ethz.ch/ If it is desired to have a refresher of thermodynamics in advance of the workshop, we recommend any of the following references: Anderson, G.M. (1996) Thermodynamics of natural systems. New York: Wiley. (small soft-back). Anderson, G.M. (2005) Thermodynamics of natural systems. 2nd edition. Cambridge University Press. Free download: https://www.academia.edu/8435624/Anderson_2005_Thermodynamics_of_Natural_Systems?auto=download Powell, R., 1978. Equilibrium thermodynamics in petrology: An introduction. Harper & Row: London, 284 pp. Free download: https://hpxeosandthermocalc.files.wordpress.com/2019/08/powell_1978_15mb.pdf Spear, F.S. (1993). Metamorphic Phase Equilibria and Pressure-Temperature-Time Paths. Mineralogical Society of America Monograph. 799 pp. Wood, B.J. & Fraser, D.G., 1977. Elementary thermodynamics for geologists. Oxford University Press: Oxford. 303 pp. David R.M. Pattison Department of Geoscience University of Calgary ES 154 | 2500 University Drive NW, Calgary, Alberta, CANADA T2N 1N4 T: 403.220.3263 | pattison@ucalgary.ca<mailto:pattison@ucalgary.ca> | ucalgary.ca/metamorphic-geology<https://ucalgary.ca/metamorphic-geology>