2-2-2-2-2-2-2-2-2-2-2-2-2 From: Linda Sobolewski <linda.sobolewski@xxxxxxxxxxxxxxxxxx> Dear Colleagues, We would like to announce a new seminar series focused on the determination of different timescale related parameters using diffusion modelling. The intention is to develop a forum for scientific exchange on the topic. The lectures will take place usually on the* 4th Thursday* of each month at *16:30 - 18:30, Central European Time Zone* to accommodate as many participants from across the globe as possible. The format will be *two lectures of about 30 minutes *each with ample time for questions and discussions. The seminar series will be launched on *Thursday, August 26* with *James Van Orman, Case Western University, USA:* *"Modeling closure temperatures in isochron systems"* *Rebecca deGraffenried, Ruhr Universität Bochum, Germany: "Mitigating errors in decompression rates calculated from crystal-hosted melt embayments"* *Background and Mode: *The use of diffusion modelling to get information on timescales of diverse geological and cosmochemical processes began in the 1960's, but has become relatively widespread only in the past few years. These are often practiced under different names such as *diffusion chronometry*, *geospeedometry*,* thermochronology* or the *determination of metallographic cooling rates.* Similar tools and data are used in fields as wide-ranging as volcanology, metamorphic petrology, igneous petrology, ore deposit studies, meteoritics, planetary sciences (e.g. samples from the Moon or Mars), diagenesis and even in the study of sedimentary processes. As a result, it is often found that methods that are well-established in one branch are often considered novel in another. There have been attempts in the past to bring scientists working in the different areas together in sessions at scientific conferences, but with little success. The availability of online platforms now provides an alternative. Moreover, in many cases there are methods that earth and planetary scientists can adapt from material scientists. The intention in this series is to make use of this opportunity and bring together these diverse group of scientists interested in modelling diffusion related phenomena in terrestrial and planetary materials, and to provide a forum for exchange. The focus, at least initially, will be on the determination of timescale related parameters â?? quantities such as residence times in magma chambers, cooling- or exhumation rates of rocks etc. â?? but may be expanded later to include other aspects. We will strive to balance talks that focus on experiments (e.g. to determine diffusion coefficients) or modelling methods and those that focus on applications. The Seminar will be held using the Zoom platform - so you will need to have installed the software (available free of cost at: https://urldefense.com/v3/__https://zoom.us/de-de/freesignup.html__;!!IKRxdwAv5BmarQ!NoPatwSG-zYyRlG7Tz9t8kpLtbXk19_-cA-ZzkiYA24uuHZffX0JvntmQf2TeUQ$ <https://urldefense.com/v3/__https://zoom.us/de-de/freesignup.html__;!!IKRxdwAv5BmarQ!N5tTvsoaE8MeLN8HizrOq1Asg9WPNj864VO3BMlPxnaSdAv-3Fsyu02UnzQkJFs$>) on your device to participate. Registration is required to avoid undesired interruptions. Please register by clicking the following link: https://urldefense.com/v3/__https://ruhr-uni-bochum.zoom.us/meeting/register/u5Mtc-qpqD4vEtAGzFdUEFyVejju7ZEWS3N1__;!!IKRxdwAv5BmarQ!NoPatwSG-zYyRlG7Tz9t8kpLtbXk19_-cA-ZzkiYA24uuHZffX0JvntmdKx1qIo$ <https://urldefense.com/v3/__https://ruhr-uni-bochum.zoom.us/meeting/register/u5Mtc-qpqD4vEtAGzFdUEFyVejju7ZEWS3N1__;!!IKRxdwAv5BmarQ!N5tTvsoaE8MeLN8HizrOq1Asg9WPNj864VO3BMlPxnaSdAv-3Fsyu02U-iM2GxQ$> - all registrants will receive a link to the seminar that is valid for that person only. You can also join the regular mailing list for the seminar series by sending a mail to Linda Sobolewski ( linda.sobolewski@xxxxxxxxxxxxxxxxxx). The infrastructure for organizing the online seminar series will be provided by Research Unit 2881 funded by the German Science Foundation (DFG) at the Universities of Bochum and Hannover (Diffusion chronometry of magmatic systems). Please direct queries and suggestions to: *Linda Sobolewski (* *linda.sobolewski@xxxxxxxxxxxxxxxxxx* <linda.sobolewski@xxxxxxxxxxxxxxxxxx> *)*. 2-2-2-2-2-2-2-2-2-2-2-2-2 ------------------------------
