Purbeck stone 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 developed at various levels throughout the sequence, each with
Michael Sullivan (stonemason) Michael Sullivan (stonemason) Michael Sullivan (died March 25, 1928) was a stonemason who in the 1920s built various historical structures of fieldstone in Casa Grande. He also built a monument in the town of Sacaton, Arizona, dedicated to Pvt. Matthew B. Juan, a Native American, who was the first Arizonan to die in World War I. Sullivan was born in Casa Grande, Arizona, in the late 19th century. There he became a professional stonemason. His specialty was building structures out of fieldstones. Fieldstones are the stones collected from the surface of fields where it occurs naturally. The stones used as