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Long-term preservation of Hadean protocrust in Earth’s mantle

Due to active plate tectonics, there are no direct rock archives covering the first ca. 500 million y of Earth’s history. Therefore, insights into Hadean geodynamics rely on indirect observations from geochemistry. We present a high-precision 182W dataset for rocks from the Kaapvaal Craton, southern Africa, revealing the presence of Hadean protocrustal remnants in the Earth’s mantle.

See full publication here.

Summary in German here.

News from Apr 29, 2022

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