Purbeck stone for items such as fonts, tombs, flooring and shafts. Purbeck stone Purbeck stone refers to building stone taken from a series of limestone beds found in the Upper Jurassic to Lower Cretaceous Purbeck Group, found on the Isle of Purbeck, Dorset in southern England. The best known variety of this stone is Purbeck Marble. The stone has been quarried since at least Roman times up to the present day. The Purbeck Group is a sequence of sedimentary rocks that were deposited in a shallow freshwater to brackish lagoonal setting. It ranges in age from Tithonian to Berriasian. Limestone beds are
Sixth, Seventh, and Tenth Street Stone Arch Bridges Sixth, Seventh, and Tenth Street Stone Arch Bridges The Sixth, Seventh, and Tenth Street Stone Arch Bridges are three stone arch bridges in Charleston, Illinois, which carry Sixth, Seventh, and Tenth Streets across the Town Branch of Cassell Creek. Prominent local stonemason Alexander Briggs built the three bridges during the 1890s, when increasing development in Charleston expanded across the creek. The three bridges were all built from locally quarried limestone, and each has a single arch design with abutments at both ends. While Charleston has thirteen bridges across the Town Branch, these three are the only stone arch bridges in