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.
4-752: The extent of this formation was originally mapped in 1892 within Baltimore County. 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 Cockeysville was also mined for crushed stone at what is now called Quarry Lake . It was known as the McMahon Quarry in
8-477: A swimming location since the 1930s. Currently, a 30-acre swim club is located there with two swimming pools, a volleyball court, picnic tables and grills, a creek, and snack house. The 40 foot deep freshwater quarry has floating platforms, two rolling logs, diving and jumping platforms, and a rope swing. The quarry began operation in the 19th century and much of the labor was that of Irish immigrants using hand drills, hammers and chisels. In 1878, Hugh Sisson acquired
12-746: The 1940s. The Cockeysville was mined by Lafarge and by Martin Marietta Inc. at the Marriottsville Quarry, Marrtiottsville , Maryland. Cockeysville marble was used in the construction of the Washington Monument in Washington D.C. and the Washington Monument in Baltimore. Beaver Dam, Maryland Beaver Dam is a flooded marble quarry in Cockeysville, Maryland that has been used as
16-462: The property and began using the latest equipment available: steam powered derricks, shovels, and diamond bit drills. Stone was loaded onto wagons and pulled by oxen to the nearby Northern Central Railway in Cockeysville until the quarry site itself was connected to the rail in 1866. The dolomitic marble , known to geologists as the Cockeysville Marble , from the quarry was used widely within
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