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America’s Oldest Rock Discovered, But It’s No Match for Canada’s 4 Billion-Year Winner
A new geological study has uncovered the oldest rock in the United States, dating back 3.6 billion years. The research, published in GSA Today, identifies the Watersmeet Gneiss in Michigan as ...
Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the Greek god of the underworld, reflecting the extreme heat that likely ...
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