Browsing Tag
continental crust formation
2 posts
3.1 billion‑year‑old rocks in Australia reveal a forgotten chapter of Earth’s water cycle
Eric Vandenburg, Adelaide University In the 45°C heat of the midday April sun, I swing my sledgehammer into…
What To Look For In 4-Billion-Year-Old Rock
Ultra-durable crystals called zircons, found in ancient rocks, preserve chemical clues that date back over 4 billion years—revealing…