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“Chicago in Stone and Clay: A Guide to the Windy City’s Architectural Geology”

October 25 @ 7:00 PM - 8:00 PM


Join us on Tuesday, October 25, 2022 at 7pm (central) for an online presentation by geologist and professor Raymond Wiggers, who has been leading popular geology tours in Chicago for the past two decades. Wiggers will discuss his new book, Chicago in Stone and Clay: A Guide to the Windy City’s Architectural Geology, which explores the interplay between the city’s most architecturally significant sites, the materials they’re made of, and the sediments and bedrock they are anchored in.
The interplay between architecture and stone, soils, and sediments is an intimate one, and Chicagoland is the perfect place to explore this fascinating connection! Wiggers will explore this interplay as he discusses the ornamental stone used on the Windy City’s most famous landmarks, and explores some of the imposing and dramatic engineering challenges of anchoring skyscrapers in the city’s treacherous lakebed sediments. As one writer noted of the book: “This unique geologist’s survey of Windy City neighborhoods demonstrates the fascinating and often surprising links between science, art, engineering, and urban history.”
Registration Required:
Admission: $10. To pay the admission fee, please visit:
EHC Members attend for Free!
A native of northeastern Illinois, Raymond Wiggers is a graduate of New Trier East High School in Winnetka and Purdue University. He served on active duty as an officer in the U.S. Navy, as a gunnery officer aboard USS Little Rock and then Fleet Navigator and Special Operations Officer for Commander, U.S. Sixth Fleet deployed in the Mediterranean Sea.
Following his return from military service, Wiggers worked in a variety of fields including Earth science, botany, teaching, leadership and management, and nonfiction writing. He served as geologist and field inspector for the Illinois Environmental Protection Agency, open-space advocate and park-improvement program director, chief horticulturist for a New York City landmark garden, horticultural company owner, Vermont Public Radio classical-music host, Illinois State Museum curator, National Park Service ranger, commercial greenhouse manager and orchidist, noted public lecturer and tour guide, and professor on the faculties of Barat College of DePaul University and Lake Forest College.
Wiggers is the author of numerous books, including Plant Explorer’s Guide to New England and Geology Underfoot in Illinois. His latest book, Chicago in Stone and Clay, was published in September 2022. Read more:
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October 25
7:00 PM - 8:00 PM
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