Professor

Education

• B.S. 1970 - Geology, Michigan State University
• M.A. 1972 - Geology, Princeton University
• Ph.D. 1976 - Geology, Harvard University

• Geochemical cycles
• Geochemical implications of plate tectonics
• Interaction of seawater with the oceanic crust
• Fluids in subduction zones

• OCN 201 - Science of the Sea
• OCN 622 - Geological Oceanography
• OCN 623 - Chemical Oceanography

Mottl, M.J., S.C. Komor, P. Fryer, and C. L. Moyer (2003) Deep-slab fluids fuel extremophilic Archaea on a Mariana forearc serpentinite mud volcano: ODP Leg 195.  Geochemistry, Geophysics, Geosystems, in press as of September, 2003.

Mottl, M.J. (2003) Partitioning of energy and mass fluxes between mid-ocean ridge axes and flanks at high and low temperature.  In Energy and Mass Transfer in Marine Hydrothermal Systems (P.E.Halbach, V. Tunnicliffe, and J.R. Hein, eds.), pp. 271-286, Dahlem University Press, Berlin, 365 pp.

Wheat, C.G., and M.J. Mottl (2000) Composition of pore and spring waters from Baby Bare: global implications of geochemical fluxes from a ridge flank hydrothermal system. Geochim. Cosmochim. Acta, 64 629-642.

Mottl, M.J., G. Wheat, E. Baker, N. Becker, E. Davis, R. Feely, A. Grehan, D. Kadko, M. Lilley, G. Massoth, C. Moyer, and F. Sansone (1998) Warm springs discovered on 3.5 Ma oceanic crust, eastern  flank  of  the Juan de Fuca Ridge. Geology, 26 51-54.

Mottl, M.J., F.T. Sansone, C.G. Wheat, J.A. Resing, E.T. Baker, and J.E. Lupton (1995) Manganese and methane in hydrothermal plumes along the East  Pacific Rise,  8°40' to 11°50'N.  Geochim. Cosmochim. Acta, 59 4147-4165.

Mottl, M.J., C.G. Wheat, and J. Boulegue (1994) Timing of ore deposition and sill intrusion at Site 856: evidence from stratigraphy, alteration, and sediment pore water composition. Proc. ODP, Sci. Results, 139 679-693.

Mottl, M.J., Davis, E.E., Fisher, A.T., and Slack, J.F. (eds.) (1994) Proceedings of the Ocean Drilling Program, Scientific Results 139: College Station, TX, 772 pp.

Mottl, M.J., and C.G. Wheat (1994) Hydrothermal circulation through mid-ocean ridge flanks: fluxes of heat and magnesium. Geochim. Cosmochim. Acta, 58 2225-2237.

Mottl, M.J. (1992) Pore waters from serpentinite seamounts in the Mariana and Izu-Bonin  forearcs, Leg 125: evidence for volatiles from the subducting slab.  In Fryer, P., Pierce, J., Stokking, L.B., et al., Proc. ODP, Sci. Results, 125 373-385.

Mottl,  M.J., and T.F. McConachy (1990) Chemical processes in buoyant hydrothermal plumes on the East Pacific Rise near 21°N. Geochim. Cosmochim. Acta, 54 1911-1927.

Research Funding

Current

• National Science Foundation. Collaborative research: Studies of deep-sourced mud volcanism in the Mariana forearc: a DSL-120, Jason ROV, and coring program. P. Fryer and M.J. Mottl, P.I.’s. $397,888 Funded. Period 10/1/01-9/30/04
• National Science Foundation. Collaborative research:  Sampling and initial characterization of hydrothermal fluids, deposits, microfauna, and megafauna at vent fields along the Eastern Lau Spreading Center. M.J. Mottl, P.I. $105,313 Funded. Period 1/1/04-12/31/05
• Ocean Drilling Program, U.S. Science Support Program. Composition of Pore Waters from ODP Leg 195, Sites 1200-1202, Western Pacific. M.J. Mottl, P.I. $36,835 Funded. Period 5/3/01-3/8/04

• National Aeronautics and Space Administration. The origin, history, and distribution of water and its relation to life in the universe. 2/03. $5M for five years to establish a UH Astrobiology Institute (K. Meech, PI; Co-PI with 12 others).