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
Anamosa Limestone Anamosa Limestone Anamosa Limestone or Anamosa Member is a dolomitic limestone quarried out of Stone City, Iowa, which is located along the Wapsipinicon River about two miles west of Anamosa, Iowa. It is distinguished by its uniform texture, color, and banding, its durability and most of all by its distinct planar and undulating varve–like laminations. This distinctive stone forms part of the Gower Formation, the youngest Silurian strata in Iowa. The Gower is overlain unconformably by a mid–Devonian formation. The color classification is Buff, which is described as a warm shade of light to moderate gold. Anamosa Limestone has been