Dr. Gary Gianniny

Dr. Gary Gianniny
Professor of Geosciences


  • Climatic vs. intrinsic controls on sedimentation in icehouse conditions
  • Sequence stratigraphy for aquifer and reservoir characterization and prediction
  • Tectonics and sedimentation in the southwestern U.S.


  • Ph.D., Geology, University of Wisconsin, 1995
  • Master of Science, Geology, University of Wisconsin, 1990
  • Bachelor of Arts, Geology, Colorado College, 1983


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About Dr. Dr. Gary Gianniny

Gary Gianniny is the chair and a professor in the Department of Geosciences at Fort Lewis College. He joined the college in 1999. Dr. Gianniny’s research focuses on sedimentary geology associated with aquifers and oil and gas, climate change, water issues and other related topics in the southwestern United States. His research has been funded by variety of sources, including a recent partnership with Kinder Morgan (to study the Mississippian Leadville Limestone in Southwestern Colorado), the Fort Lewis College Foundation and several other organizations. His work with his students can be found in several peer-reviewed publications and in numerous national conference proceedings for the Geological Society of America, the American Association of Petroleum Geologists, the Ecological Society of America and other organizations. Prior to Fort Lewis, Dr. Gianniny was an assistant professor at Bucknell University.

Dr. Gianniny was the 2012 Fort Lewis College Scholar of the Year. He is the past president (and vice president) of the Four Corners Geological Society and serves as President of the organization’s Foundation board.

In the Media

The Pennsylvanian Hermosa Formation, from Shelf to Basin – RMS-AAPG Pre-Convention Field Trip,” Outcrop: Newsletter of the Rocky Mountain Association of Geologists, 2010


The effects of Lake Powell on sediment aggradation in the lower reaches of the San Juan River,” Geology of Utah’s Far South (a Utah Geological Association publication), 2014

Geological Guide to the Honaker Trail, San Juan River Gorge, Southeastern Utah,” Geologic Road, Trail and Lakes Guides to Utah’s Parks and Monuments (a Utah Geological Association publication), 2012

Progradational to aggradational mixed siliciclastic/carbonate sequence sets on the tectonically active Eastern margin of the Pennsylvanian Paradox basin, Southwestern Colorado,” The Paradox basin: New developments in petroleum systems and basin analysis, Rocky Mountain Association of Geologists, 2009

Dam release and monsoon controlled recharge and drawdown of riparian aquifers, Dolores River, Colorado,”Metamorphosis: COPLAC Journal of Undergraduate Research, Fall 2011