![erslev26 erslev26](https://warnercnr.colostate.edu/wp-content/uploads/sites/2/2018/06/erslev26.png)
Eric Erslev
Professor Emeritus
I am a structural geologist with interests in Laramide tectonics, fault-related folding, fabric analysis and Rocky Mountain geology in general.
970-231-2654
![Frank G. Etheridge, Emeritus Faculty Frank G. Etheridge, Emeritus Faculty](https://warnercnr.colostate.edu/wp-content/uploads/sites/2/2017/07/FGE-Photo-for-Geoscience-Web-Page-175x245.jpg)
Frank G Ethridge
Professor Emeritus
Frank joined the Colorado State University faculty in 1975 and continues to enrich the geosciences department as an active professor emeritus.
970-226-0350
Email: fredpet@colostate.edu
![McCallum McCallum](https://warnercnr.colostate.edu/wp-content/uploads/sites/2/2023/03/McCallum-175x245.png)
Malcolm McCallum
Professor Emeritus
![Sally Sutton Sally Sutton](https://warnercnr.colostate.edu/wp-content/uploads/sites/2/2023/03/Sally-Sutton-175x245.png)
Sally J. Sutton
Professor Emeritus
I am a geologist with research interests that include Sedimentary petrology and geochemistry, shale geology, fluid/rock interaction, chemical weathering, clastic diagenesis.
![Tommy Thompson Tommy Thompson](https://warnercnr.colostate.edu/wp-content/uploads/sites/2/2018/05/Tommy-Thompson-175x245.jpeg)
Tommy Thompson
Professor Emeritus
My interests are focused on exploration and production of gold, silver, copper, lead, &/or zinc ore deposits after 47.5 years as a professor of economic geology at four universities.
email: thompsontommyt@aol.com