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Amy E. Lange, Roger L. Nielsen, Frank J. Tepley III and Adam J. R. Kent The petrogenesis of plagioclase-phyric basalts at mid-ocean ridges Geochemistry, Geophysics, Geosystems 14

Version of Record online: 30 AUG 2013 | DOI: 10.1002/ggge.20207

Key Points

  • Host glasses of PUBs show the same compositional range as aphyric glasses
  • Plagioclase phenocrysts are too dense to float in most MORB liquids
  • Magma chambers act as density filters preventing the eruption of phyric magmas

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