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October 3, 2024VolcanicaOpen Access

Uranium-series disequilibria in MORB, revisited: A systematic numerical approach to partial melting of a heterogeneous mantle

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Authors

LEL. J. ElkinsSLSarah Lambart

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Overview

Computational modeling demonstrates variable uranium-series disequilibria during partial melting in heterogeneous mantle, indicating complex melt transport networks.

Key Points

  • Mantle melting requires multiple pyroxenite lithologies to reproduce global basalt compositions, with melts undergoing variable extents of chemical re-equilibration.
  • Basalt-like pyroxenite fractions greater than 10 % generate anomalously thick oceanic crust, restricting their global abundance during mantle partial melting.
  • Computational modeling of bilithologic porous flow demonstrates that radioactive decay decouples uranium-series disequilibria from trace elements in mantle melts.

Cite This Study

Elkins et al. (2024) studied this question.

synapsesocial.com/papers/68e55ee7e2b3180350efbf16https://doi.org/10.30909/vol.07.02.685715
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  1. 1Uranium-series disequilibria in MORB, revisited: A systematic numerical approach to partial melting of a heterogeneous mantle2023
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  5. 5Integrated Models of Basalt Petrogenesis: A Study of Quartz Tholeiites to Olivine Melilitites from South Eastern Australia Utilizing Geochemical and Experimental Petrological Data1978 · 1,284 citations