Silurian rocks in Kentucky are exposed on the eastern and western flanks of the Cincinnati Arch, a large wavelength cratonic structure separating the Appalachian foreland basin from the intracratonic Illinois Basin. The arch experienced uplift during latest Ordovician-Early Silurian time, so that the exposed Silurian section is relatively thin due to onlap and post-Silurian erosional truncation on the arch. On both flanks of the arch, dolomitic carbonates predominate, but the section on the eastern side reflects a more shale-rich ramp that faced eastern Appalachian source areas. In the Silurian section on the western side of the arch, protected behind the arch barrier, shales are rare except during the highest sea levels, and rocks in the area reflect deposition across a broad, lowgradient shelf area, interrupted by structurally controlled topographic breaks. Using the progression of interpreted depositional environments and nearshore faunal communities, a relative sea-level curve, which parallels those of previous workers, was generated for the section in Kentucky. While the curve clearly shows the influence of glacial eustasy, distinct indications of the far-field, flexural influence of Taconian and Salinic tectonism are also present. In fact, at times regional tectonic subsidence seems to have overwhelmed the effects of glacio-eustasy. Moreover, a regional angular truncation in the section, as well as overlying, bentonitic shales and a dysaerobic fauna in the deepestwater part of the section (Estill Shale), are best explained in terms of far-field tectonic subsidence accompanying the first tectophase of the Salinic orogeny in the Appalachian area.