Across the crest of the Cincinnati arch, the upper Maysville and lower to middle Richmondian strata are composed of couplets of 4th order parasequence sets that alternate between slightly more silt-rich carbonate-rich parasequences and more carbonate-rich ones. Although packstones are common, grainstones are relatively rare. Presumably these are interpreted as the result of alternating times of slightly deeper and shallower depositional facies on a mid-carbonate ramp position, however, they may represent times of different amounts of clay and silt being introduced into the depositional system. Recurrent faunal facies are characteristic of several of these alternating depositional packages.