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Ohio Geological Survey Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Ohio Geological Survey, Government Organization, 2045 Morse Road, Columbus, OH.

The Ohio Department of Natural Resources, Division of Geological Survey increases awareness of Ohio’s geology and provides geologic information and services needed for responsible management of Ohio's natural resources.

10/16/2026

Happy Earth Science Week! Today is Geologic Map Day, a perfect day to explore our Ohio Geology Interactive Map.

The Ohio Geology Interactive Map is the hub for the ODNR Division of Geological Survey’s extensive collection of geologic data available to the public. This video will simplify how to navigate it. To get started, visit ohiodnr.gov/ogim.

Are you a first-time user? Please: ask questions in the comments section and we’ll do our best to help!

Interactive maps are the future of the Survey’s mapping efforts. Historically, we have produced static paper maps; these maps are incredibly valuable, but ultimately, they only capture a snapshot of our knowledge on a specific geological area/topic. With interactive maps, we can make real-time updates to the data that powers our maps and increase overall accessibility of our state’s geological information.

📢You may have known that earthquakes occur in Ohio, but do you know what to do when an earthquake starts to shake the gr...
10/15/2026

📢You may have known that earthquakes occur in Ohio, but do you know what to do when an earthquake starts to shake the ground?

𝑫𝙧𝒐𝙥, 𝑪𝙤𝒗𝙚𝒓, 𝙖𝒏𝙙 𝙃𝒐𝙡𝒅 𝑶𝙣! 🙆‍♀️🙆

On October 15th, Ohioans can join millions of people across the world to practice earthquake safety during International ShakeOut Day! This event, founded by the U.S. Geological Survey (USGS), provides an opportunity to practice how to be safer during earthquakes by holding regional earthquake drills.

For more information on participating in ShakeOut Day, visit shakeout.org.

Curious about Ohio’s earthquakes and want to learn more? The 2025 𝘙𝘦𝘱𝘰𝘳𝘵 𝘰𝘯 𝘌𝘢𝘳𝘵𝘩𝘲𝘶𝘢𝘬𝘦 𝘈𝘤𝘵𝘪𝘷𝘪𝘵𝘺 𝘪𝘯 𝘖𝘩𝘪𝘰 offers a clear and concise representation of all seismicity, natural and anthropogenic, in the state for the calendar year. This report presents earthquake data in tables and figures, with brief discussions of significant earthquakes. The complete report is available for free download by visiting:https://dam.assets.ohio.gov/image/upload/ohiodnr.gov/documents/geology/2025_EarthquakeActivityInOhio.pdf.

Looking for information on more recent earthquakes? Visit ohioseis.ohiodnr.gov to learn the latest information on earthquakes in the Buckeye State.

Happy !!Did you know that October is Squirrel Awareness Month? Let’s learn about a present-day critter who has been han...
10/14/2026

Happy !!

Did you know that October is Squirrel Awareness Month? Let’s learn about a present-day critter who has been hanging out in Ohio’s trees since the Ice Age: the squirrel! 🐿️

🌰In Ohio, the remains of at least two different types of squirrels have been found. Remains from 𝘚𝘱𝘦𝘳𝘮𝘰𝘱𝘩𝘪𝘭𝘶𝘴 𝘵𝘳𝘪𝘥𝘦𝘤𝘦𝘮𝘭𝘪𝘯𝘦𝘢𝘵𝘶𝘴 (ground squirrel) were uncovered from the Carter Site in Darke County, a former glacial lake, in the 1970s. 𝘚𝘤𝘪𝘶𝘳𝘶𝘴 sp. (tree squirrel) was found in Sheridan Cave in Wyandot County in the late 1980s.

🌰This might seem a little nutty, but bones dating from the Ice Age (Pleistocene Epoch) are certainly regarded as fossils; yet they are often found in their original state with little to no permineralization or lithification.

🌰Unfortunately, Scrat from the movie “Ice Age” is completely fictional. There is no historical or scientific evidence of saber-toothed squirrels existing during the Ice Age.

Tell us your favorite Ohio fossil in the comments!

Happy !! In celebration of our favorite week of the year, we want to hear from you! Do you have a burning Ohio geology ...
10/13/2026

Happy !! In celebration of our favorite week of the year, we want to hear from you! Do you have a burning Ohio geology question you’ve always wanted to ask a geologist? Well…ASK US ANYTHING!

Put your question in the comments below and as the week goes on our geologists will reply!

has started! We are excited to share that Governor Mike DeWine is recognizing Earth Science Week 2026. This proclamati...
10/12/2026

has started! We are excited to share that Governor Mike DeWine is recognizing Earth Science Week 2026. This proclamation celebrates the efforts of the Ohio Department of Natural Resources Division of Geological Survey to raise awareness of the role our geologic resources play in our daily lives.

How are you celebrating Earth Science Week?

ODNR paleontologist Mark Peter will give an informative talk, and then he and geologist Chris Wright will guide particip...
10/10/2026

ODNR paleontologist Mark Peter will give an informative talk, and then he and geologist Chris Wright will guide participants in fossil collecting at the emergency spillway at Caesar Creek State Park. Participants should meet at the Caesar Creek Lake Visitor Center. Please note: this is NOT the Caesar Creek Nature Center.

NOTE: Because of traffic related to the Ohio Renaissance Festival, participants traveling via I-71 are encouraged to navigate using Exit 36 (Wilmington Rd. exit).

Participants are encouraged to wear sturdy hiking boots and/or waterproof shoes, bring hiking/walking sticks, and have plenty of water, snacks, sunscreen, and bug spray.

The event is free and recommended for ages 5 and up.

We invite you to join us in celebrating Earth Science Week: October 11–17! ⛏🪨🐚🦣This weeklong national celebration of “Cr...
10/09/2026

We invite you to join us in celebrating Earth Science Week: October 11–17! ⛏🪨🐚🦣

This weeklong national celebration of “Critical Minerals for a Thriving Society” highlights the importance of geoscience research and technology for identifying, mining, refining, transporting, and using critical minerals responsibly for the essential needs of all.

You can discover Ohio’s fascinating geology by attending any of our events or by engaging with us through our website and social media!

For complete information & event details, visit: https://ohiodnr.gov/discover-and-learn/safety-conservation/about-ODNR/geologic-survey/educational-resources/earth-science-week-ohio

Join geologists Tyler Norris and Molly E. Hunt for a trip back in time to the Ice Age. After a short talk about the loca...
10/08/2026

Join geologists Tyler Norris and Molly E. Hunt for a trip back in time to the Ice Age. After a short talk about the local glacial geology, participants will be led on the ADA-accessible boardwalk through one of Ohio’s premier natural areas.

Attendees will learn how the Ice Age shaped the area's landscape, leading to the formation of the bog. Ice Age plants and animals will be discussed as well.

Hikers are encouraged to wear sturdy hiking boots and/or waterproof shoes, bring hiking/walking sticks, and have plenty of water, snacks, sunscreen, and bug spray.

The event is free and recommended for ages 5 and up.

Calling all Earth Science explorers: Join the Ohio Department of Natural Resources, Division of Geological Survey for Oh...
10/07/2026

Calling all Earth Science explorers: Join the Ohio Department of Natural Resources, Division of Geological Survey for Ohio Geology Discovery Day!!

This event is free and perfect for learners of all ages who are excited about rocks, minerals, fossils and more. During the open house hours of 10:00 am–2:00 pm, visitors can engage in hands-on learning activities throughout the H. R. Collins Laboratory and Core Repository at Alum Creek State Park.

Activity stations will feature representatives from the ODNR Division of Geological Survey, ODNR Division of Natural Areas and Preserves, H2Ohio, Boonshoft Museum of Discovery, The Ohio State University School of Earth Sciences, Franklin Soil and Water Conservation District, Ohio Aggregates and Industrial Minerals Association, Ohio Natural Energy Institute, and The Ohio State University Byrd Polar and Climate Center.

In addition to the activity stations, visitors can grab lunch at the 614 Fully Loaded food truck and enjoy the picnic area beside the laboratory.

You will not leave empty handed, with plenty of available giveaways, maps, and educational publications available.

So, load up the kids, grab your friends, and join us for this outstanding program!

Join ODNR paleontologist Mark Peter, geologist Brittany Parrick, and Orton Geological Museum Curator Dale Gnidovec for a...
10/06/2026

Join ODNR paleontologist Mark Peter, geologist Brittany Parrick, and Orton Geological Museum Curator Dale Gnidovec for a guided tour of the vast array of fossils that decorate the building stones of Ohio's capitol. This free, biannual event is a favorite for anyone interested in Ohio's cultural and natural history. Offered twice, participants can attend either tour at their preferred time.

Participants should meet in the Worthington Classroom on the ground floor and will receive a free copy of the booklet, Statehouse Fossils: A Guide to Fossils of the Ohio Capitol.

Please RSVP for the Statehouse Fossil Tour by October 9th via this form: https://docs.google.com/forms/d/e/1FAIpQLSc3OsgTrYpqVBnxirpL67IyBHjF9y182Nj9oDAPNh8SxPLmoA/viewform?pli=1

The event is free and recommended for ages 5 and up.

Address

2045 Morse Road
Columbus, OH
43229

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16142656576

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