Geology Walking Tour Guided by Phil St. George

Boyce Thompson Arboretum State Park

June 24, 2017   8am

Learn about rocks and volcanic formations along our main trail on a tour with professional geologist Rich Leveille as your guide for a lively tour that compresses almost two billion years of geologic history into just over one educational hour! Learn about Pinal schist, the volcanic origins of Picket Post Mountain and the Apache Leap tuff. Phil guides the Rock Walk again July 22.

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