Earth and Environmental Sciences Faculty

Juliet Ryan-Davis

Assistant Professor

Profile

My research focuses on igneous and ore-forming processes, with a personal penchant for subduction zones. I am interested in what governs the formation and evolution of dynamic, magmatic systems—and their accompanying fluids—with implications for broader crustal-scale interactions and tectonics over space and time. I integrate geological field observations with geochemistry, geochronology, and petrologic modeling to answer questions about how rocks and minerals on Earth have formed. I value collaborative and interdisciplinary work, including integrating science questions with related societal issues such as mineral resources, volcanic hazards, and geoethics.

Graduate Students:

  • Marisol Gonzales Flores: Nickel sulfide deposits
  • Heather Aikman: Granitoid "mush" clasts from Laguna del Maule volcanic field

Post Doctorates:Ìý

  • Zoe Molitor: The Concord Granites of the Acadian Orogeny

Selected Recent Publications

  • Ryan-Davis, J., Bucholz, C.E., and Sisson, T.W. (2026),ÌýShallow differentiation of primitive arc magmas at the Jurassic Emigrant Gap mafic complex, Sierra Nevada, CA. Journal of Petrology.Ìý
  • Lewis, M.J.,ÌýRyan-Davis, J.Ìýand Bucholz, C.E. (2023), Mafic intrusions record mantle inputs and crustal thickness in the Eastern Sierra Nevada batholith. GSA Bulletin.Ìý
  • Hildreth, W., Fierstein, J. andÌýRyan-Davis, J.Ìý(2021), No ring fracture in Mono Basin, California. Geological Society of America Bulletin.Ìý
  • Ryan-Davis, J., Lackey, J.S., Gevedon, M.L., Barnes, J.D., Lee, C-T.A., Kitajima, K., and Valley, J.W., (2019) Andradite skarn garnet records of exceptionally lowÌýδ18OÌývalues along an Early Cretaceous intrusive contact, Sierra Nevada, CA. Contributions to Mineralogy and Petrology 174:68.ÌýÌýÌý
  • Hildreth, W.,ÌýRyan-Davis, J., and Harlow, B., (2017), Graphite in the Bishop Tuff and its effect on postcaldera oxygen fugacity. Geosphere, v. 14(1), p. 343-359.Ìý
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