Earth History Research Center

Figure 13. Cross-section of an organic zone from the Eagle Creek Formation in Oregon. See text for discussion of similarities of this Oregon site with Yellowstone. Note that sediments are sorted between the deciduous leaves (dark wavy horizontal lines). This illustratton first appeared tn. Coffin HG. 1983. Ortgtn by Destgn. Washington DC:Review and Herald Publishing Assn., p 143.