400-mile fossilised volcanic arc discovered in this country and why it matters

Scientists have discovered a vast, fossilized volcanic arc hidden beneath China's Sichuan Basin, dating back 800 million years. This unexpected inland arc challenges previous assumptions about volcanic activity being confined to continental margins. The discovery, resulting from deep boreholes and geophysical surveys, reshapes our understanding of Earth's tectonic evolution during the Tonian period and offers insights for future resource exploration.

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