Channelized melt flow in downwelling mantle: Implications for 226Ra-210Pb disequilibria in arc magmas

Nick Petford, M A Koenders, S Turner

Research output: Contribution to JournalArticle


We present the results of an analytical model of porous flow of viscous melt into a steadily dilating "channel" (defined as a cluster of smaller veins) in downwelling subarc mantle. The model predicts the pressure drop in the mantle wedge matrix surrounding the channel needed to drive melt flow as a function of position and time.
Original languageEnglish
JournalJournal of Geophysical Research. Solid Earth
Issue numberB11202
Publication statusPublished - 1 Nov 2008



  • mantle
  • subduction
  • short-lived isotopes
  • melt flow
  • melt segregation

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