IODP SEDIS - Thesaurus -

Monongahela Group
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Carboniferous
	....Pennsylvanian
	.....Monongahela Group
RT	Virginia
	Ohio
	Pennsylvania
	Maryland
	West Virginia
	Pittsburgh Coal
SN	In Pennsylvania, contains Pittsburgh Coal Seam at base; top of Waynesburg Coal marks upper boundary. W Maryland, E Ohio, W Pennsylvania, W Virginia, and West Virginia.