Limestone high quality quarried limestone, called Indiana limestone. Many famous buildings in London are built from Portland limestone. Limestone was also a very popular building block in the Middle Ages in the areas where it occurred, since it is hard, durable, and commonly occurs in easily accessible surface exposures. Many medieval churches and castles in Europe are made of limestone. Beer stone was a popular kind of limestone for medieval buildings in southern England. Limestone and (to a lesser extent) marble are reactive to acid solutions, making acid rain a significant problem to the preservation of artifacts made from this stone.
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