Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleA question of reduction.AuthorsBallhaus, ChrisAbstractDiscusses the redox stratigraphy of the mantle and factors governing oxygen fugacity. Redox equilibrium in the mantle; Synthesis of mineral assemblages representing the mineralogy of the transition zone, 410 to 660 kilometers deep in the mantle.SubjectsEARTH'S mantle; STRATIGRAPHIC geologyPublicationNature, 1993, Vol 366, Issue 6451, p112ISSN0028-0836Publication typeArticleDOI10.1038/366112a0