USGS3; Stratigraphic Contacts and Named/Unnamed Units
Formation/Group	Stratigraphic unit	Top (ft)	Depth (ft)	Thick (ft)	Elevation (ft)
Conemaugh Group		0.00	824.04	824.04	2100.05
	Little Pittsburgh coal bed	87.87	89.65	1.78	2012.18
	Little Clarksburg coal bed	154.35	155.15	0.80	1945.70
	Normantown coal bed	176.70	178.10	1.40	1923.35
	Lower Hoffman coal bed	196.33	198.80	2.47	1903.72
	Upper Clarysville coal bed	207.62	208.77	1.15	1892.43
	Elk Lick coal bed	401.00	405.58	4.58	1699.05
	Harlam coal bed	531.52	532.25	0.73	1568.53
	Upper Bakerstown coal bed	620.20	622.00	1.80	1479.85
	Bakerstown coal bed	639.50	640.40	0.90	1460.55
	Brush Creek coal bed horizon	734.65	734.65	0.00	1365.40
Allegheny Formation		824.04	1029.40	205.36	1276.01
	Upper Freeport coal bed horizon	824.04	824.04	0.00	1276.01
	Lower Kittanning coal bed	956.22	957.40	1.18	1143.83
	Brookville coal bed	983.89	984.35	0.46	1116.16
	Unnamed coal bed	1006.50	1007.50	1.00	1093.55

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