Age
Relative age dating of the Mauch Chunk places it in the late Mississippian epoch, with some of the top layers in the early Pennsylvanian epoch, being deposited between 345 to 320(±3) million years ago. It rests conformably atop many formations. Its upper contact is complex. In certain areas, the contact is conformable in others, there is an unconformity. However, the Pottsville Formation is always above the Mauch Chunk.
Read more about this topic: Mauch Chunk Formation
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