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.
Cottonwood Limestone producing formations. A regionally famous construction material, Cottonwood Limestone is yellowish, buff, to nearly white in color, even-textured, durable, and very suitable for cutting into dimensional stone for masonry. Moreover, its beds of usable stone are particularly massive for the region; blocks of stone three or more feet thick and several feet in length and width can be taken from a ledge. While many other limestone formations are found in the region and have been widely used in local construction, most (excepting most notably the Fort Riley Limestone) weather poorly, lie with much thinner parting beds, or are generally much