Cockeysville Marble

Cockeysville Marble
Stratigraphic range: Precambrian, Cambrian, or Ordovician
Polished slab of the marble from Cockeysville. Width of slab inside black border is approximately 10.7 cm.
Typemetamorphic
Unit ofGlenarm Supergroup
UnderliesWissahickon Formation
OverliesSetters Formation
Thicknessabout 750 feet
Lithology
Primarymarble
Location
RegionPiedmont of Maryland
Type section
Named forCockeysville, Maryland
Named byWilliams and Darton, 1892

The Cockeysville Marble is a Precambrian, Cambrian, or Ordovician marble formation in Baltimore, Carroll, Harford and Howard Counties, Maryland. It is described as a predominantly metadolomite, calc-schist, and calcite marble, with calc-gneiss and calc-silicate marble being widespread but minor.

The extent of this formation was originally mapped in 1892 within Baltimore County.