👉 Sandstones are a type of igneous rock that forms from the accumulation and cooling of sedimentary rocks. They are composed primarily of calcium carbonate, which gives them their distinctive brown or gray color. Sandstone is found in a variety of locations worldwide, including Africa, Asia, Europe, North America, and Australia. The term "sandstones" typically refers to the type of igneous rock that forms from the accumulation and cooling of sedimentary rocks. These rocks are composed primarily of calcium carbonate,