Parts of ancient Earth may have formed continents and recycled crust through subduction far earlier than previously thought.

Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

The history of Earth's continents might be different from what we first thought. The most popular theory of how the continents formed billions of years ago may not be right, according to a paper in ...

Tectonic map of the Earth. The first continental crust on Earth formed more than 3 billion years ago. Likely the first fragments formed by partial melting and re-crystallization of the primordial ...

Researchers have identified what may be the first physical traces of primordial Earth, the early version of our planet that existed before a massive collision reshaped it into the world we know today.

Tiger Iron formed when in the sea dissolved iron reacted with free oxygen produced by the first photosynthetic life forms on Earth. For the first 2 billion years of Earth's history, there was barely ...

You would have a hard time finding these common Earth rocks on our neighboring planets. Here’s what makes our landscapes so unique. Limestone landscapes, like this one in the Stone Forest in China’s ...