Julie Bowles

Graduate Committee Chair; Associate Professor
 Lapham Hall 358


PhD, University of California, San Diego
BS, University of Washington
BA, University of Puget Sound

Research Interests

Dr. Bowles is interested in how the Earth’s magnetic field varies over time; and understanding how and how well magnetic minerals record these variations; and using these “rock records” of changing magnetic fields and magnetic properties to interpret volcanic processes. Recent projects include documenting variations in Earth’s field intensity in pyroclastic flows in the western U.S.; using recorded field variations to constrain eruptive processes on the Galapagos Spreading Center and the Juan de Fuca Ridge; and creating synthetic igneous rocks in the lab to better understand the magnetic recording process in rocks from Earth and Mars.

Teaching Areas


Selected Publications

Jung, J., & Bowles, J. (2021, March). A Feasibility Study of Microbialites as Paleomagnetic Recorders. Frontiers in Earth Science.
Bowles, J., Morris, A., Tivey, M., & Lascu, I. (2020, February). Magnetic mineral populations in lower oceanic crustal gabbros (Atlantis Bank, SW Indian Ridge): Implications for marine magnetic anomalies. Geochemistry, Geophysics, Geosystems.
Bowles, J., Lappe, S., Jackson, M., Arenholz, E., & van der Laan, G. (2019, May). Time-temperature dependent Curie temperature variations in titanomagnetite: evidence from XMCD and Mössbauer. Geochemistry Geophysics Geosystems, 20, 2272–2289.
Bowles, J., Gerzich, D., & Jackson, M. (2018, July (3rd Quarter/Summer)). Assessing New and Old Methods in Paleomagnetic Paleothermometry: A Test Case at Mt. St. Helens, USA. Geochemistry, Geophysics, Geosystems.
Clague, D., Caress, D., Dreyer, B., Lundsten, L., Paduan, J., Portner, R., Spelz-Madero, R., Bowles, J., Castillo, P., Guardado-France, R., Le Saout, M., Martin, J., Santa Rosa-del Rıo, M., & Zierenberg, R. (2018). Geology of the Alarcon Rise, Southern Gulf of California. Geochemistry, Geophysics, Geosystems.
Bowles, J., & Jackson, M. J. (2016, December). Effects of titanomagnetite reordering processes on thermal demagnetization and paleointensity experiments. Geochemistry Geophysics Geosystems, 17, 4848– 4858.
Fedorchuk, N. D., Dornbos, S. Q., Corsetti, F. A., Isbell, J. L., Petryshyn, V. A., Bowles, J., & Wilmeth, D. T. (2016). Early non-marine life: Evaluating the biogenicity of Mesoproterozoic fluvial-lacustrine stromatolites. Precambrian Research, 275, 105-118.
Bowles, J., Gee, J., Jackson, M., & Avery, M. (2015, October (4th Quarter/Autumn)). Geomagnetic paleointensity in historical pyroclastic density currents: Testing the effects of emplacement temperature and postemplacement alteration. Geochemistry Geophysics Geosystems, 16, 3607–3625.