Mascot Dolomite  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Lower Ordovician
 .....Mascot Dolomite
RTVirginia
 Tennessee
 Knox Group
SNIn Knox Group. Consists of light- and dark-gray dolomite and limestone; moderately cherty; base marked by chert matrix sandstone. E Tennessee and Virginia.