Category:Rocks in Pennsylvania by geochronology

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Precambrian	Phanerozoic rocks in Pennsylvania
Preceded by Proterozoic Eon	Phanerozoic rocks in Pennsylvania
	Paleozoic Era						Mesozoic Era			Cenozoic Era
	Cambrian	Ordovician	Silurian	Devonian	Carboniferous	Permian	Triassic	Jurassic	Cretaceous	Paleogene	Neogene	4ry

Subcategories

This category has the following 25 subcategories, out of 25 total.

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C

Cambrian rocks in Pennsylvania (4 C)
Carboniferous rocks in Pennsylvania (5 C)
Cenozoic rocks in Pennsylvania (2 C)
Cretaceous rocks in Pennsylvania (3 C)

D

Devonian rocks in Pennsylvania (4 C)

J

Jurassic rocks in Pennsylvania (5 C)

M

Mesoproterozoic rocks in Pennsylvania (1 C)
Mesozoic rocks in Pennsylvania (9 C)
Mississippian rocks in Pennsylvania (3 C)

N

Neoproterozoic rocks in Pennsylvania (3 C, 1 F)

O

Ordovician rocks in Pennsylvania (5 C)

P

Paleozoic rocks in Pennsylvania (12 C, 1 F)
Pennsylvanian rocks in Pennsylvania (4 C)
Permian rocks in Pennsylvania (3 C)
Phanerozoic rocks in Pennsylvania (10 C)
Precambrian rocks in Pennsylvania (3 C)
Proterozoic rocks in Pennsylvania (4 C)

Q

Quaternary rocks in Pennsylvania (1 C)

S

Silurian rocks in Pennsylvania (4 C)

T

Triassic rocks in Pennsylvania (5 C)

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