Figure F8. Summary stratigraphic section for the Potomac (partim, ?Albian) Formation in the Medford borehole. Potomac Unit II sequence is defined in Sugarman et al. (2004). Pollen zonation of Brenner (1963, 1967) and Doyle and Robbins (1977). Red lines = sequence boundaries. B = barren.

Figure F8. Summary stratigraphic section for the Potomac (partim, ?Albian) Formation in the Medford borehole. Potomac Unit II sequence is defined in Sugarman et al. (2004). Pollen zonation of Brenner (1963, 1967) and Doyle and Robbins (1977). Red lines = sequence boundaries. B = barren.