IODP SEDIS - Thesaurus -

Astoria Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Neogene
	....Miocene
	.....Astoria Formation
RT	Washington
	Oregon
SN	Lower to middle Miocene. NW Oregon and SW Washington. Added to Thesaurus in 1985.