Abstract
During the past 10 years many surface and subsurface elevations have been accumulated from several key horizons within that part of Tennessee between Cumberland Plateau on the east and the western valley of Tennessee River on the west. From these data structural contour maps have been compiled on the top of the Chattanooga shale (Kinderhook group of the Mississippian system), on the Pencil Cave horizon (metabentonite bed near the top of the Black River group of the Ordovician system), and on the top of the Knox dolomite group (Cambro-Ordovician system). These maps show the structural configuration of these horizons and permit a study of comparative structure. This comparative study is supplemented by an isopach map of central Tennessee, showing the variations in thickness of the interval between the Chattanooga shale and the Pencil Cave. From these maps many critical facts may be inferred regarding the structural history of the Nashville dome.
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