Type metamorphic Overlies Setters Formation Named for Cockeysville | Unit of Glenarm Supergroup Thickness about 750 feet Primary Marble | |
 | ||
Named by Williams 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.
Quarrying
The Cockeysville Marble has been quarried in Beaver Dam within Cockeysville and other locations in Maryland. A historical account is given in Maryland Geological Survey Volume Two.
The Washington Monument in Baltimore and the one in Washington, D.C. are constructed from the Cockeysville Marble.
References
Cockeysville Marble Wikipedia(Text) CC BY-SA