Tyee Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....middle Eocene
 ......Tyee Formation
RTOregon
SNOverlies Siletz River Volcanic Series. It consists of thick series of rhythmically bedded sandstone and intercalated siltstone. In W Oregon.