IODP SEDIS - Thesaurus -

Umpqua Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Paleogene
	....Eocene
	.....Umpqua Formation
RT	California
	Oregon
SN	Lower to middle Eocene. Predominantly medium-grained sandstone with some shaly and conglomerate layers. In N California and SW Oregon.