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| Geauga County Glacial Landforms Map |
The map above is a combination of one from ODNR with a topo based terrain map underlay. It looks like the maps projections are slightly different. The topo map geauga outline is from the shapefile that the state and Geauga auditor's office seem to use. The ODNR one is close, but looks a little bit off.
The legend is:
- Green is ridge moraine
- Pink is kames and eskers
- Light Blue is lake deposits
- Yellow is Outwash
Big Creek starts in the Defiance Moraine, which was depisoted around 14,800 years ago. What's now Geauga County was covered and uncovered by sheets of ice for thousands of years prior to the current geological era.
A really interesting map which shows all the glacial landforms of Ohio is this one:
A detailed list of ODNR provided maps is here:
