Figure 15. New testable intracanyon flow stratigraphy and model for composite volcanic edifices. Note that the flows from the Prospect flow stack are correlated with downstream Black Ledge remnants. Whitmore remnants are correlated to downstream remnants originally mapped as Layered Diabase (and Massive Diabase). Absolute ages from Karlstrom et al. (2007) are given for the closest remnant dated by the ⁴⁰Ar/³⁹Ar method. Inset relationships are depicted to show relative ages. Figure is not to scale.