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.
Fencepost limestone marker for the now generally obsolete Benton Group classification. Reporting on the "Fence-Post Horizon" in 1897, W. N. Logan noted fifty thousand stone posts in Mitchell and Lincoln counties alone. Since then, the informal name "Fencepost limestone bed" has come to have a stature equal that of the adjacent members. The greatest use of the Fencepost limestone, for fencing and building, was from 1884 to 1920. On the early open ranges of the Kansas frontier, typically, the burden was on the farmers to protect their crops from free-range and driven cattle. Common practice of earlier frontier farmers in the East