Abstract
THE Earth underwent a remarkable change of behaviour at the Archean–Proterozoic boundary. Greenstone belts intruded by granites dominate the geological record before about 2.5 × 109 yr ago. After that time, essentially no such greenstone belts were formed, and long linear orogens characterised by high–grade metamorphic rocks made their first appearance.
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STRONG, D., STEVENS, R. Possible thermal explanation of contrasting Archean and Proterozoic geological regimes. Nature 249, 545–546 (1974). https://doi.org/10.1038/249545a0
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DOI: https://doi.org/10.1038/249545a0
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