What is the difference between marble, granite, limestone and travertine?
While there are dozens of classifications they fall in three basic categories. Magmatic Rocks – Formed by consolidation of deep (instrusive) Magmas – Granites fall in this category, their origin is deep under earth’s crust where molten magma mixes with many elements & minerals. Through pressure & temperature variation various veins & colors are fomed. A geological event occuring millions of years ago frozen in time. Sedimetary Rocks – Formed by the accumulation of materials deposited by water (rivers, lakes and seas) – Limestones, travertines, sandstones, and slate (ancient mud) fall in this category. These stones are formed because of the force of gravity or by precipitation from solutions (chemicals) or formed from the shells and skeletons of ancient animals. Metamorphic Rocks – Wich are magmatic and sedentary rocks whose structure and mineral components have been transformed by external forces, such as the vicinity of hot masses, pressure caused by meeting of the continental masses
