Kittatinny Formation

The Paleozoic Kittatinny Formation or Kittatinny Limestone is a dolomitic limestone geological formation in New Jersey. The Kittatiny Limestones are located primarily within the long valley running from Picatinny Arsenal in Rockaway Township, southwest toward Chester Township. It overlies the Cambrian age Hardyston Quartzite.

The Kittatinny Limestone locally contains hydrocarbons and numerous accessory minerals including fluorite, sphalerite, arsenopyrite, galena, quartz, albite, and others. The Kittatiny is an exception to the general rule that Paleozoic rocks in this area are generally poor aquifers, since wells drilled into it produce relatively large flows of water.