Dr. Engle is a professor in the Department of Geological Sciences, who previously worked at the U.S. Geological Survey (~14), and in environmental consulting (~5 years).

• Ph D in Hydrogeology, University of Nevada, Reno (2005)
• MS in Hydrogeology, University of Nevada, Reno (2003)
• BS in Geology and Environmental Chemistry, The Evergreen State College (1997)

• Chemical Composition of Formation Water in Shale and Tight Reservoirs: A Basin‐Scale Perspective John Wiley & Sons, Inc. (2020), Yousif Kharaka, Kathleen Gans, Elisabeth Rowan, James Throdsen, Christopher Conaway, Madalyn Blondes, Mark Engle.
• Considerations in the application of machine learning to aqueous geochemistry: Origin of produced waters in the northern U.S. Gulf Coast Basin Applied Computing and Geosciences 3-4 (2019), Mark Engle, Benjamin Brunner.
• Considerations in the application of machine learning to aqueous geochemistry: Origin of produced waters in the northern U.S. Gulf Coast Basin Applied Computing and Geosciences 3-4 (2019), Mark Engle, Benjamin Brunner.
• Spatial variability of produced-water quality and alternative-source water analysis applied to the Permian Basin, USA Hydrogeology Journal (2019), Binod K. Chaudhary, Robert Sabie, Mark A. Engle, Pei Xu, Spencer Willman, Kenneth C. Carroll.
• A Practical Guide to the Use of Major Elements, Trace Elements, and Isotopes in Compositional Data Analysis: Applications for Deep Formation Brine Geochemistry Springer 187 (2016), Madalyn S. Blondes, Mark Engle, N J. Geboy.

• Hydrogen-bonding networks in highly saline brines from the Lower Eagle Ford Group: Implications for wettability of continuous reservoirs (2019), Volume San Francisco, California, Aaron Jubb, Mark Engle.
• Organic substances in wastewater from continuous oil and gas production in the Permian Basin (2019), Volume San Francisco, California, William Orem, Matthew Varonka, Tiffani Schell, Isabelle Cozzarelli, Denise Akob, Mark Engle, Terry Gregston.
• G0001. Mathematics overcame the statistical problems of closure: Has it solved real-world geochemical problems? (2018), Volume Olomouc, Czech Republic, Mark Engle, Nicholas E. Pingitore.
• Geochemistry of atmospheric particulates in the vicinity of mountaintop coal mines, West Virginia, USA (2012), Volume Charlotte, North Carolina, Allan Kolker, Mark Engle, William H. Orem, Lynn M. Crosby, Calin A. Tatu, Nicholas J. Geboy, Michael Hendryx, Michael McCawley, Matthew S. Varonka, Laura Esch.
• Geochemical and hydrologic controls on produced water geochemistry from shale gas reservoirs (2012), Volume Charlotte, North Carolina, Mark Engle, Elisabeth L. Rowan, Thomas F. Kraemer, Anne L. Bates.

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