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The King of Dinosaurs

Cleveland Geological Society

Explore the Earth's origin, history and structure

About the Society

The Cleveland Geological Society was founded in 1957. Membership is open to people interested in all aspects of geology. Monthly meetings feature talks on diverse topics, such as the geology of far-flung places, explanations of local points of interest and paleontology. Members and visiting geologists are invited to speak. The society also holds field trips to local sites and occasionally more distant locales.

The Cleveland Geological Society helps support a number of Museum programs. Among these are the summer Kirtlandia Research Internship Program and Archaeology & Earth Science Day in October.


Meetings are held the third Wednesday of the month from September through May at 7:30pm in Classroom A on the lower level of the Museum, unless otherwise noted. Guests are welcome. Anyone may bring fossil, mineral and/or rock specimens to meetings for identification. Meeting attendees can earn 1 hour of Naturalist Certificate credit if the attendee is enrolled in the Naturalist Certificate Program. If the Museum is closed due to bad weather or other circumstances, any Cleveland Geological Society meetings and all other events are canceled for that day.

What's Shakin' and Why

Wednesday, May 18, 2016; 7:30pm
Museum Educator and Seismic Observatory Coordinator Bob Bartolotta will present "What's Shakin' and Why" in Classroom A on the Museum's lower level. Bartolotta's program will be about earthquakes in Ohio and the history of seismology in Cleveland since the late 1800s, and includes a tour of the Museum's seismic observatory. Learn more

Cleveland Geological Society Field Trip and Picnic

Sunday July 17, 2016; 10am to 1pm
Cuyahoga Valley National Park
Meet at the Ledges Trail (between Happy Days Lodge and Virginia Kendal area) for a mid-morning hike. The moderate trail, which is 2.2 miles long with an elevation change of 105 ft, through will take us on an area composed of the Pennsylvanian-age Sharon Conglomerate. We'll return around noon for a potluck picnic. Please contact Doug Dunn at to register if you plan to attend.

Archaeology & Earth Day

Saturday, October 15, 2016; 10am-4pm
A Museum-wide celebration of International Archaeology Day, Ohio Archaeology Month and National Earth Science Week. Dig in to archaeology, geology, mineralogy and more. This event is included with general admission. Members get in free! Learn more

Interested in joining CGS?

Download the membership form and mail it with your payment or bring it to the next CGS meeting!