Posts Tagged ‘these rocks’

Study: Life on land backdated to 3.22 billion years ago

From ScienceDaily: Life took hold on land at least as early as 3.2 billion years ago, suggests a study. The team studied ancient rock formations from South Africa’s Barberton greenstone belt. These rocks are some of the oldest known on Earth, with their formation dating back to 3.5 billion years. … These rocks are some […]

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