Figure 8
(to see high resolution version, click here)
Reverse view from that of Figures 6 and 7, looking to the southwest from the valley of the Cimarron River to the south side of the Canadian River valley, opposite the Hajny locality. The Putnam volcanic ash (Section 24-16N-16W) at the top of the Canadian River terrace system has been fission-track dated and identified as deriving from the Lava Creek B eruption at Yellowstone of 610,000 years ago (Ward 1991a-b).