Pope Francis’ tomb in the Basilica of St. Mary Major has been made with materials from the Italian region of Liguria. It is a ...

The Marble Caves are natural rock formations with curved walls covered in swirling mineral patterns. They sit on the shores of General Carrera Lake, a glacial lake in southern Chile. The lake ...

Metamorphic rock is formed when existing rock is transformed under high heat and pressure, which generally destroys any fossils that were in the rock before it was metamorphosed. For example, marble ...

The Vatican has released details of Pope Francis’ tomb in the Basilica of St. Mary Major, where the late pontiff will be ...

Chalk is a sedimentary rock. Metamorphic rocks are formed when another rock is under heat and pressure. Marble is a metamorphic rock, it is highly decorative and used for statues. Igneous rocks ...