IODP SEDIS - Thesaurus -

Chazy Group
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Ordovician
	....Middle Ordovician
	.....Chazy Group
RT	Quebec
	Vermont
	New York
SN	E New York, W Vermont and S Quebec. Added to Thesaurus in 1989.