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Articles on Continental crust

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Kimberlite volcanic rock with mantle crystals (green olivine and purple and orange garnet) and fragments of country rock (light grey).

We used to think diamonds were everywhere. New research suggests they’ve always been rare

Diamonds form alongside a distinct purple companion. We studied it to reach a conclusion about how rare they might actually be.
Half Dome in California is constituted from granite, a relatively less dense type of rock. (Shutterstock)

Earth’s rock-solid connections between Canada and Australia contain clues about the origin of life

How the earliest continents formed has been a matter of debate. Analysis of zircons in Canada and Australia suggest that those historical processes are similar to current tectonic movements.

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