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  • The Earth's known rock reservoirs contain more radiogenic lead than expected on average. Mantle-derived rocks with highly unradiogenic lead — as discovered in the Horoman massif — may bear witness to a previously unsampled, complementary reservoir.

    • Albrecht W. Hofmann
    News & Views
    Nature Geoscience
    Volume: 1, P: 812-813

  • Once subducted into the mantle, material from Earth's continental crust seems to disappear. But its distinctive isotopic signature has been found back at the surface — in volcanic rocks on a Pacific island.

    • Albrecht W. Hofmann
    News & Views
    Nature
    Volume: 448, P: 655-656

  • An assessment of crystallization processes occurring in magma chambers in the ocean floor finds an unexpected enrichment in trace elements, reviving an old theory of the cycling of magma in these chambers. See Article p.698

    • Albrecht W. Hofmann
    News & Views
    Nature
    Volume: 491, P: 677-678