IODP SEDIS - Thesaurus -

Yamhill Formation
BT	Chronostratigraphic Units
	.Phanerozoic
	..Cenozoic
	...Paleogene
	....Eocene
	.....Yamhill Formation
RT	Oregon
SN	Comprises Mill Creek Beds, of predominantly dark-gray shale and siltstone with occasional beds of lime-cemented sandstone, and an overlying sequence of massive sandstone beds which grades upward into more argillaceous rock. In W Oregon.