At the October 2020 General Meeting, we had Mike Viney speak about the petrified wood of the Blue Forest in Wyoming. The Zoom meeting video has been processed and is now available for viewing. After the presentation, Mike sent a pdf with many of his slides (RBlueForestOfAncientLakeGosiute).
Mike is a Teacher in Residence at Colorado State University and a long-time collector and researcher into petrified wood. The title of his talk was "The Blue Forest of Ancient Lake Gosiute: Sweetwater County, Wyoming". The Blue Forest is a famous source of petrified wood known for its blue chalcedony. Lake Gosiute was one of the lakes in the Green River region during the Eocene.
Here's a link to Mike’s web page called "The Virtual Petrified Wood Museum" http://petrifiedwoodmuseum.org/
