Sean McGuire

Petrographer l

  • Microscopy + Petrography


As the newest addition to CTLGroup’s petrography team, Mr. McGuire assists with compositional assessment of concrete and concrete constituents, microscopical analysis of aggregate and potential aggregate source areas, and petrographic evaluation of concrete cores and cylinders. Some projects include the development and implementation of quantitative image analysis procedures as well as determination of oxidative sources and stresses in mortars and other construction materials. Mr. McGuire received his B.S. in Geology from Illinois State University in 2019 and has research experience in silicic petrogenesis in Iceland as well as geologic map construction coupled with U-Pb geochronology. Sean is also current member of the American Concrete Institute.


B.S. in Geology, Illinois State University, 2019


  • American Concrete Institute (ACI)

Featured Publications

Silicic Petrogenesis At Snæfell Volcano, Iceland, Revealed By Zircon Analyses

MCGUIRE, Sean P. and BANIK, Tenley J., Illinois State University, Dept. of Geography, Geology, and the Environment, Normal, IL 61790-4400