In 1996 a team of American and Australian scientists traveled to the twisted fjords and bare islands of southwestern Greenland, where the oldest sedimentary rocks on Earth can be found.

The youngest layers are found at the top. Reading the layers is complicated ... causing the minerals that compose the stone to re-form into new crystals. Sedimentary rock is formed by the accumulation ...

We have discovered the oldest meteorite impact crater on Earth, in the very heart of the Pilbara region of Western Australia. The crater formed more than 3.5 billion years ago, making it the oldest ...

NASA scientists were recently “astonished” by the Perseverance rover's discovery of dark gray spheres on Mars, whose origin ...

The basalt which makes up the Giant’s causeway is an igneous rock. Sedimentary rocks are formed by small rock pieces which are transported by rivers and laid down in layers. Chalk is a ...