October 2025 Newsletter

Newsletter Summary

Dr. Missy Eppes from UNC-Charlotte will speak on rock fractures caused by thermal stresses, which create long-term, sub-critical cracking, rather than one catastrophic fracturing event. President Nate Klema reviews exfoliation in both igneous and sedimentary bedrock outcrops. Jim Corken announces two fall field trips (Hidden Valley in Durango on October 18th and Sand Canyon, west of Cortez, on November 15th). Cindy French announces that a Foundation M.S. grant recipient will present to the society in 2026 on 1.23 Ga old stromatolites and bimodal magmatism in the Burro Mountains of NM.