Figure 13. The model age of samples collected along vertical transects is related to elevation above the river channel. This relation can be used to estimate effective vertical incision rates at several places. A, Transect at Cow Hoof Rock (Stop 8). B, Transect at the Maryland viewing platform (Stop 9). "On section" are samples collected on the Cow Hoof Rock vertical transect. "Off section" are samples not collected on that transect but at other locations along and below the 140-ft strath. |