“…The Chattanooga with its two members, the Dowelltown and the Gassaway, is present in much of the subsurface of Tennessee. Locally the Dowelltown is absent by nondeposition on shoal areas in the Chattanooga Sea (Conant and Swanson, 1961, p. 18 (Pepper, de Witt, and Demarest, 1954). It underlies much of eastern Ohio, western West Virginia, and eastern Kentucky.…”