Definition: Acrolithan (n.) noun: A type of sedimentary rock composed primarily of calcite, or calcium carbonate, which gives the rock its name; often found in sandstone beds or pebbly areas. It is often called a "sandslide stone" and is distinguished by its high density and light weight. It is usually found over sand dunes, beaches, and other sandy areas, such as along riverside walkways or beachfront roadways, where it can be compacted into compacted rock. The acrolithan bed is made up of calcite particles that have been compressed and set within a layer of sediment. This means that the acrolithan bed has a dense core and light weight, making it ideal for construction projects or in areas with limited access to excavation techniques. It is also called a "sandslide stone" because it resembles sand dunes in appearance; however, it is not sandstone itself but a rock formation that is formed by the compression of calcium carbonate particles due to temperature differences between the surface water and the soil. Acrolithan beds are known for their high density and light weight, making them useful for building materials like concrete, brick, or stone. They are also used in construction and landscaping projects where compacted rock provides a strong foundation without requiring digging or lifting heavy loads. The word 'acrolithan' has been historically associated with the formation of sand dunes and the high density of its particles, which make it suitable for construction purposes such as building roads, walkways, and beaches.

acrolithan