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Posted: 2025-05-10 22:42:08 UTC
This article contains some claims that remain unverified. While much of the content may be accurate, exercise care when relying on this information.
This article contains some claims that remain unverified. While much of the content may be accurate, exercise care when relying on this information.
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Last Updated
2025-05-10 22:42:44 UTC
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Rollup News
Michigan's Watersmeet Gneiss has been identified as the oldest rock in the U.S., dating back 3.6 billion years, but Canada's Acasta Gneiss remains the oldest at 4 billion years. Australia holds the record for the oldest minerals ever found, with 4.4-billion-year-old zircons.
Discovery of America's oldest rock in Michigan.
Comparison with Canada's older Acasta Gneiss.
Use of zircon crystals for dating ancient rocks.
Mixed ages of zircon crystals making dating tricky.