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Caesar Creek Dam Emergency Spillway, Massie Township, Warren Co., Ohio, USA

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Caesar Creek is named after a former black slave living with the Shawnee in this area (ca. 1790-1800). The Creek was dammed in the late 1970s and an extensive spillway created. This spillway cut through Upper Ordovician strata (Arnheim, Waynesville, Liberty, and Whitewater Formations) - some of the most fossiliferous strata in Ohio.

While primarily known for fossils, there are minerals associated with the site. In particular, calcite in whole brachiopods (similar to those found near Georgetown, Ohio) and pyritized fossils (similar to those found in Sylvania, Ohio).

The spillway and adjacent road-cuts are open to collectors, but registration is required at the U.S. Army Corps of Engineers headquarters a mile or so north of the spillway. The headquarters has a neat museum, park, and bathroom facilities.

Mineral List



2 entries listed. 2 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

"The petrology of a composite vertical section of Cincinnatian Series limestones (Upper Ordovician) of southwestern Ohio"
WD Martin - Journal of Sedimentary Research, 1975


External Links

D. Shrake. "Excursion to Caesar Creek State Park in Warren County, Ohio: A Classic Upper Ordovician Fossil-collecting Locality" Fieldtrip guide. http://napc2009.org/wp-content/uploads/2009/06/caesar-creek-state-park-in-warren-county.pdf

Mineral and/or Locality  
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