IODP SEDIS - Thesaurus -

Unkar Group
BT	Chronostratigraphic Units
	.Precambrian
	..Unkar Group
RT	Arizona
SN	Grand Canyon Series. Divided into (descending) Dox Sandstone, Shinumo Quartzite, Hakatai Shale, Bass Limestone, and Hotuata Conglomerate. In N Arizona.