Geoffery Wheat

Geoffery Wheat

Research Professor

Geological Oceanography

College of Fisheries and Ocean Sciences
PO Box 475
Moss Landing, CA 95039
831-633-6872 (fax)


Beck, E., W. Kirkwood, D. Caress, T. Berk, P. Mahacek, K. Brashem, J. Acain, V. Reddy C. Kitts, J. Skutnik, C. G. Wheat. (2009). "SeaWASP: A small waterplane area twin hull autonomous platform for shallow water mapping". Mar. Tech. Soc. J. 43(1):6-12.

Solomon, E. A., M. Kastner, C. G. Wheat, H. Jannasch, G. Robertson, E. E. Davis, and J. D. Morris. (2009). "Long-term hydrogeochemical records in the oceanic basement and forearc prism at the Costa Rica subduction zone". Earth Planet. Sci. Lett.. 282:240-251.

Bode, S., M. Buatier, M. Steinmann, T. Adatte, and C.G. Wheat. (2008). "Characterization of metalliferous sediment from a low-temperature hydrothermal environment on the Eastern Flank of the East Pacific Ridge". Mar. Geo.. 250:128-141.

Wheat, C. G. P. Fryer, A. T. Fisher, S. Hulme, H. Jannasch, M. J. Mottl, K. Becker. (2008). "Borehole observations of fluid flow from South Chanorro Seamount, an active serpentinite mud volcano in the Mariana forearc". Earth, Planet. Sci. Lett. 267:401-409.

Wheat, C. G., and A. T. Fisher. (2008). "Massive, low-temperature hydrothermal flow from a basaltic outcrop on 23 Ma seafloor of the Cocos Plate: Chemical constraints and implications". Geochem. Geophys. Geosyst.. 9(Q12O14)
doi: 10.1029/2008GC002136



  • low- and high-temperature geochemistry
  • hydrogeology
  • borehole fluid samplers
  • undersea instrumentation


Current Research Projects

  • Studies of deep-sourced mud volcanism in the Mariana Forearc: A DSL 120, Jason ROV, and coring program
  • The thermal state of 20-25 Ma lithosphere subducting at the Costa Rica Margin, implications for hydrogeology, fluxes, and the seismogenic zone
  • Long Term Continuous Monitoring of Pressure, Fluid Chemistry, and Hydrology in Instrumented Boreholes at the Coast Rica Subduction Zone
  • Towards quantifying elemental fluxes and fluid origins from margins using novel submarine instrumentation
  • Sampling and Initial Characterization of Hydrothermal Fluids, Deposits, Microfauna, and Megafauna at Vent Fields along the Eastern Lau Spreading Center
  • The hydrogeological architecture of basaltic ocean crust: CORK experiments for the initial IODP expedition on the flank of the Juan de Fuca Ridge
  • Determining the Limits to Life in Submarine Hydrothermal Systems: Active Sulfide Deposits as Natural Laboratories



  • Regional Coord, WC & PRURC, California Office
  • Adjunct Scientist, Monterey Bay Aquarium Research Institute
  • Affiliate Graduate Faculty, University of Hawaii