USGS1; Stratigraphic Contacts and Named/Unnamed Units
Formation/Group	Stratigraphic unit	Top (ft)	Depth (ft)	Thick (ft)	Elevation (ft)
Conemaugh Group		0.00	300.10	300.10	3390.00
	Bakerstown coal bed	175.19	176.70	1.51	3214.81
Allegheny Formation		300.10	483.55	183.45	3089.90
	Upper Freeport coal bed	300.10	309.10	9.00	3089.90
	Upper Freeport Limestone	311.55	314.25	2.70	3078.45
	Upper Kittanning coal bed	382.60	386.81	4.21	3007.40
	Unnamed coal bed	407.70	408.44	0.74	2982.30
	Middle Kittanning coal bed	428.88	430.50	1.62	2961.12
	Lower Kittanning coal bed	460.55	465.24	4.69	2929.45
Pottsville Group		483.55	679.00	195.45	2906.45
	Unnamed coal bed	550.80	551.32	0.52	2839.20
	Unnamed coal bed	652.74	653.10	0.36	2737.26
	Unnamed coal bed	675.48	675.83	0.35	2714.52

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