Redefinition of the terms Kingsport Formation and Mascot Dolomite and subdivisions of the upper part of the Knox Group in eastern Tennessee

Upper part of the Knox Group has previously been divided into three formations; however, because of the lack of regionally recognizable boundaries, there has been a marked inconsistency as to the rocks assigned by different workers to the Longview Dolomite, Kingsport Formation and Mascot Dolomite. Regional stratigraphic studies have pointed out that there are only two recognizable major gross lithologic divisions. Because of this limitation, the term Longview, which has been used as a fossil zone, is abandoned; the term Kingsport is redefined to include the limestone and medium to coarsely crystalline dolomite unit, and Mascot is redefined to include the silty to very-finely crystalline dolomite unit from the top of the Kingsport to the unconformity at the top of the Knox Group.