Manganese Crust (IMAGE)

Technical University of Munich (TUM)

Manganese Crust

Caption

This manganese crust started to grow about 20 million years ago. It grew layer by layer until it was retrieved a few years ago and analyzed in the Maier-Leibnitz-Laboratory at the Technical University of Munich. In layers that are around 2.5 million years old, the researchers found iron-60 and elevated levels of manganese-53. Their occurrence is evidence of a near-Earth supernova 2.5 million years ago.

Credit

Dominik Koll / TUM

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