Ancient zircon crystals provide a window into early Earth history

PHYSorg
Mar 3, 2026, 3:00 pm59 ptsTrending
There are many open questions about how our planet formed 4.55 billion years ago: When did plate tectonics start? When did the Earth's mantle begin to vigorously circulate in a process called convection? What was Earth like early in its lifetime? Because no rock records from the earliest years of the Earth…

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