IODP SEDIS - Thesaurus -

Ash Hollow Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Neogene
	....Pliocene
	.....Ash Hollow Formation
RT	Wyoming
	Nebraska
	Kansas
	South Dakota
	Ogallala Formation
SN	In Ogallala Formation. W Kansas, W Nebraska, South Dakota, and SE Wyoming.