Geoffrey Cromwell

Non Tenure Track Assistant Professor, Geology

Research Interests: Paleomagnetism and geomagnetism-including the time-averaged strength of the Earth's magnetic field in Iceland, Hawaii and Norway. Developing a 3D geologic model of San Diego Co. to better understand groundwater resources in the area.


  • Office:: Hameetman Science Center 219
  • Email: : cromwell@oxy.edu
  • Phone:: (323) 259-2556
  • Office Hours:: Wednesday 1pm-3pm

Education: B.A. Occidental College; M.S., Ph.D. University of California San Diego


Cromwell, G., C.G.. Constable, H. Staudigel, L. Tauxe, P. Gans (2013), Revised and updated paleomagnetic results from Costa Rica, Geochemistry Geophysics Geosystems, 14(9), 3379-3388, doi:10.1002/ggge.20199.
Cromwell, G., L. Tauxe, H. Staudigel, C.G. Constable, A.A.P. Koppers, and R.-B. Pedersen (2013), In search of long term hemispheric asymmetry in the geomagnetic field: results from high northern latitudes, Geochemistry Geophysics Geosystems, 14(8), 3234-3249, doi:10.1002/ggge.20174.
In Review:
Cromwell, G., C.L. Johnson, L. Tauxe, C.G. Constable, N. Jarboe, Paleosecular variation over the last 10 Ma from a new global data set (PSV10), submitted to Geochemistry Geophysics Geosystems.
Cromwell, G., L. Tauxe, H. Staudigel, H. Ron, Paleointensity estimates from historic and modern Hawaiian lava flows using basaltic volcanic glass as a primary source material, submitted to Physics of the Earth and Planetary Interiors.