Lost River - Karst Information Portal

2007 NSS Convention Guidebook
Stop 4
At the Corydon Crushed Stone Company
Quarry just north of Corydon (Figure 24),
we will again see the upper Mississippian
limestones of the Blue River Group that
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overlie older strata to be seen to the east. At the
quarry, the Paoli, Ste. Genevieve, and St. Louis
limestones have been quarried for use as crushed
stone aggregate and building stone since about
1885. The quarry also has an excellent exposure
Figure 24. Corydon is located at the confluence of Indian Creek and Little Indian Creek, both of which
are deeply incised into the Mitchell Plain. Stop 4, at the Corydon Crushed Stone Quarry, is located in
the easternmost Crawford Upland outlier, Pennington Chapel Ridge.