Marble is best known for what it can be made into — incredible artworks or tacky ashtrays. But before it was that prized white-grey rock, marble was something a lot more pedestrian — limestone. For ...

Metamorphic rocks are more than just beautiful formations — they’re time capsules that capture the heat, pressure, and chemical changes deep within Earth. From recording ancient tectonic collisions to ...

Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and ...

Igneous and metamorphic petrology represent two fundamental branches of geological science that elucidate the formation, transformation, and evolution of Earth’s solid materials. Igneous petrology ...

National Geographic's Wonder Lessons will teach you how to navigate the stars, spot cloud types, recognize common trees, and ...

Every rock is a storyteller, holding secrets of Earth’s ancient past. From deep mantle messengers to billion-year gaps in canyon walls, geology reveals our planet’s epic journey. Understanding these ...

Researchers have discovered microdiamonds in the Nishisonogi metamorphic rock formation in Nagasaki Prefecture, Japan. Microdiamonds in metamorphic rocks are important minerals because they form in ...

Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

Dwayne Johnson is a big Hollywood star who has been going by the name “The Rock” ever since his wrestling days. He’s been known to the world as The Rock for a long time, so it’s no surprise that a ...