A model for the origin of large silicic magma chambers: precursors of caldera-forming eruptions

  title={A model for the origin of large silicic magma chambers: precursors of caldera-forming eruptions},
  author={A. M. Jellinek and Donald J. DePaolo},
  journal={Bulletin of Volcanology},
The relatively low rates of magma production in island arcs and continental extensional settings require that the volume of silicic magma involved in large catastrophic caldera-forming (CCF) eruptions must accumulate over periods of 105 to 106 years. We address the question of why buoyant and otherwise eruptible high-silica magma should accumulate for long times in shallow chambers rather than erupt more continuously as magma is supplied from greater depths. Our hypothesis is that the… 
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