Kumtaşı, Grains of sand is a natural material with the help of cement as a result of adhering to a piece of physical sedimentary. A quartz sand grains with a high percentage of natural born and sedimentary rocks çimentolaşmasından; kumtaşi construction, roads and pavements of stone flooring, very thin ones, the grinding stone is used as.

Kalkerli kumtaşı, kireçyaşı in a kind of greenish sandstone with grains.