A mantle is a layer of material that covers or surrounds something else. In geology, the Earth's mantle is the thick layer of rock located between the Earth's crust and the core. It is composed mainly of silicate minerals and plays a crucial role in tectonic activity and the movement of tectonic plates. In fashion, a mantle can refer to a type of cloak or outer garment that drapes over the shoulders. Historically, mantles were worn for warmth and protection, often made from heavy fabrics. Today, they are sometimes used in ceremonial contexts or as stylish outerwear.