Mascot Dolomite (Rodgers, 1943). Dolostone and limestone. Dolostone, nearly white or very-light- to medium gray with red- to pink-streaks, very-fine- to fine-grained; with subordinate medium- to coarse-grained dolostone; thin green shale partings; sandstone lenses to 1-foot thick; and grayish red and dark-gray dolostones; all locally present. Dense, gray limestone is in the lower half and chert is present locally. Unconformable (locally angular) upper contact. The Mascot Dolomite ranges from 330 to 640 feet in thickness. Kingsport Dolomite (Rodgers, 1943). Dolostone and limestone. Dolostone, very-light-gray to dark-gray and light- to dark-brown, fine- to coarse-grained; with white chert; thin green shale partings; sandstone lenses; and scattered sand grains. Fine-grained limestone is locally present. The Kingsport Dolostone ranges from 100 to 350 feet in thickness. The Longview Limestone of previous reports is included in the Kingsport (Harris, 1969).