Now showing items 1-3 of 3

  • Compositional dependence of lower crustal viscosity 

    Shinevar, William J.; Behn, Mark D.; Hirth, Greg (John Wiley & Sons, 2015-10-23)
    We calculate the viscosity structure of the lower continental crust as a function of its bulk composition using multiphase mixing theory. We use the Gibbs free-energy minimization routine Perple_X to calculate mineral ...
  • Constraints on the composition of the Aleutian arc lower crust from VP/VS 

    Shillington, Donna J.; Van Avendonk, Harm J. A.; Behn, Mark D.; Kelemen, Peter B.; Jagoutz, Oliver (John Wiley & Sons, 2013-06-07)
    Determining the bulk composition of island arc lower crust is essential for distinguishing between competing models for arc magmatism and assessing the stability of arc lower crust. We present new constraints on the ...
  • A detailed geochemical study of island arc crust : the Talkeetna Arc section, south–central Alaska 

    Greene, Andrew R.; Debari, Susan M.; Kelemen, Peter B.; Blusztajn, Jerzy S.; Clift, Peter D. (2005-12-23)
    The Early to Middle Jurassic Talkeetna Arc section exposed in the Chugach Mountains of south central Alaska is 5-18 km wide and extends for over 150 km. This accreted island arc includes exposures of upper mantle to ...