In situ Os isotopes in abyssal peridotites bridge the isotopic gap between MORBs and their source mantle. - Alard, Olivier; Luguet, Ambre; Pearson, Norman J.; Griffin, William L.; Lorand, Jean-Pierre; Gannoun, Abdelmouhcine; Burton, Kevin W.; O'Reilly, Suzanne Y. (Nature, 2005)