GEOLOGICAL SOCIETY OF WASHINGTON Meeting Number 1558 Wednesday, October 7, 2020; Meeting: 8:00 pm ***Meeting to be held virtually via Zoom*** Note that the meeting will be “locked” 15 min. after the formal program begins and new attendees will only be allowed in between talks. TALKS WILL BE 20 MINUTES w/ QUESTIONS TO FOLLOW +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ JEREMY HOFFMAN, Science Museum of Virginia – The enduring legacy of inequitable exposure to urban heat and other tales. SARA C. PENNISTON-DORLAND, University of Maryland – Applying crystal clocks to metamorphic processes: Using Li isotopes in garnet to constrain the duration of fluid flow during subduction metamorphism. CAROL FROST, University of Wyoming – Born Strong: the making and breaking of cratons. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Future Meetings 2020: Nov 4; Dec 2. Know someone who would enjoy GSW? Consider inviting a colleague or friend to the meeting. Minutes of the previous meeting are posted on the GSW website for review by members. GSW website: <http://www.gswweb.org> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Zoom link active at 7:30 p.m. EDT for socializing For additional details please visit: www.gswweb.org Link to access GSW Meeting No. 1558: https://nasem.zoom.us/j/98309512402?pwd=VnNYcVZJUnk3YzlXOU9sK2tRRXdLdz09 If anyone has any announcements or informal communications they would like to share with the society, please let one of us or Ester know ahead of time.