GO 548 Title Image
Herington Limestone of the Chase Group, northwestern Butler County. This rock is dolomitic, chalky limestone with numerous quartz concretions. It indicates arid conditions of shallow marine sedimentation during the early Permian. Scale pole marked in feet; photo by J.S. Aber.
Return to field stratigraphy syllabus.
GO 548 © J.S. Aber (2008).