Evidence of Earth's first continents — 4.3-billion-year-old "diamonds" — are actually just fragments of polishing grit, a new study finds. In 2007, an international team first reported discovering the ...
For years they were known as the oldest geological materials ever found: 4.3 billion-year-old diamonds. But thanks to a new study, we now know these diamonds are just polishing grit. In 2007, Nature ...
RIVERSIDE, Calif. — As is well known, the Earth is about 4.6 billion years old. No rocks exist, however, that are older than about 3.8 billion years. A sedimentary rock section in the Jack Hills of ...
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