Proceedings of the National Academy of Sciences · 1979 · 185 citations · 2 references
Natural SciencesEarth SciencesGeologyGeochemistryTectonicsTectonophysicsCrustal CompositionCrustal GeochemistryCrustal StructureIsotope GeochemistryMantle GeochemistryMantle PetrologyEarth Structure InferenceFlood BasaltsIsotopic AbundancesIsotopic Geochemistry Of The MantleLower Mantle StructureSource Mantle CompositionStrontium IsotopesUpper Mantle Structure
A simplified model of earth structure based on the Nd and Sr isotopic characteristics of oceanic and continental tholeiitic flood basalts is presented, taking into account the motion of crustal plates and a chemical balance for trace elements. The resulting structure that is inferred consists of a lower mantle that is still essentially undifferentiated, overlain by an upper mantle that is the residue of the original source from which the continents were derived.
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Ancient Lithosphere: Its Role in Young Continental Volcanism
C. Brooks, David E. James, Stanley R. Hart · Science · 1976 · 167 citations