The oldest crust on Earth, known to be unchanging, is actually being altered in real time. The North American continent ... if we want to understand how a planet has evolved over a long time ...

Earth’s continents have regions of very old ... “Luckily, we also got the new idea about what drives this thinning.” More of North America’s Craton lies in Canada than the USA, but the ...

Cratons are ancient, huge rock formations that compose portions of the planet ... North America at UT Austin geoscientist Junlin Hua and colleagues noticed odd behavior at the border between Earth ...

The oldest parts of Earth's continents are called cratons, and underneath, they are rooted to the mantle of the planet. Scientists have now discovered that the roots below the North American continent ...

Whether it's from a classroom globe or one of ... just make out the west coast of North America. However, there is a little more land on this side of the planet than the image makes out ...

A 230 million-year-old, never-before-seen raptor unearthed in the U.S. is the oldest dinosaur ever discovered in North America — and one of the earliest to ever emerge on our planet. The mini ...

A map showing seismic speed in Earth’s crust at 125 miles (201 km) depth across the continental U.S. and portions of Central America and Canada. The North American ... how a planet has evolved ...

A new study details how the North American plate is “dripping ... But as a result of being the most ancient pieces of Earth’s lithosphere (containing the crust and uppermost mantle ...

For instance, the North ... planet has evolved over a long time," Becker said. "It helps us understand how do you make continents, how do you break them, and how do you recycle them [into the Earth.]" ...