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GEE, JEFFREY

Professor

Director, Geosciences Research Division

Degrees:

• B.A., Washington and Lee University
• B.S., Washington and Lee University
• Ph.D., UCSD, Scripps Institution of Oceanography

Research Interests:

• Processes of remanence acquisition in igneous rocks and the origin of associated magnetic anomalies
• Application of paleomagnetic/anomaly data to crustal accretionary processes
• Quantitative analysis of silicate and magnetic fabrics in cumulate rocks
• Studies of past geomagnetic field variations, particularly intensity fluctuations

Courses Recently Taught:

• SIO 16: Geology of the National Parks
• SIO16: Geology of the National Parks
• SIO209: Special Topics
• SIO50: Intro/Earth&Environmental Sci

Honors and Awards:

• Joint Oceanographic Institution (JOI) Distinguished Lecturer
• Humboldt Foundation German-American Frontiers of Science participant

Mentoring:

• Bowles, Julie (Graduate; 2001-2005)
• Selkin, Peter (Graduate; 1999-2003)

Morris, A., Gee, J.S., Pressling, N., John, B.E., MacLeod, C.J., Grimes, C.B. and R.C. Searle, 2008, Tectonic rotation in an oceanic core complex, Geology, in review.

Selkin, P.A., Gee, J.S., Meurer, W.P., and S.R. Hemming, 2008, Archean paleointensities from the 2700 Ma Stillwater Complex, MT, Geochemistry, Geophysics, Geosystems, in press.

Gee, J.S., Cande, S.C., Kent, D.V., Partner, R. and K. Heckman, 2008, Mapping geomagnetic field variations with unmanned airborne vehicles, EOS, Trans. Amer. Geophys. Union, (May, 2008).

Gee, J.S., Tauxe, L. and C. Constable, 2008, AMSSpin - A LabVIEW program for measuring the anisotropy of magnetic susceptibility (AMS) with the Kappabridge KLY-4S, Geochemistry Geophysics Geosystems, 9 (8), 10.1029/2008GC001976.

Varga, R.J., Horst, A., Gee, J.S. and J.A. Karson, 2008, Direct evidence from anisotropy of magnetic susceptibility for lateral melt migration at superfast spreading centers, Geochemistry Geophysics Geosystems, 9 (8), 10.1029/2008GC002075.

Lawrence, K., Johnson, C., Tauxe, L. and J. Gee, 2008, Lunar paleointensity measurements: implications for lunar magnetic evolution, Phys. Earth Planet. Int., 168, 71-87.

Engels, M., Barckhausen, U. and J.S. Gee, 2008, A new towed marine vector magnetometer and results from a Central Pacific cruise, Geophys. J. Int., 172, 115-129.

Ildefonse, B., Blackman, D.K., John, B.E., Ohara, Y., Miller, D.J., MacLeod, C.J. and Integrated Ocean Drilling Program Expeditions 304/305 Scientific Party, 2007, Oceanic core complexes and crustal accretion at slow-spreading ridges, Geology, 35, 623-626.

Gee, J.S. and D.V. Kent, 2007, Source of oceanic magnetic anomalies and the geomagnetic polarity timescale, in Treatise on Geophysics, v. 5, Geomagnetism, M. Kono, (ed.), Elsevier, Amsterdam, 455-507.

Granot, R., Tauxe, L., Gee, J.S. and H. Ron, 2007, A view into the Cretaceous geomagnetic field from analysis of gabbros and submarine glasses, Earth Planet. Sci. Lett., 256, 1-11.

Selkin, P.A., Gee, J.S. and L. Tauxe, 2007, Nonlinear thermoremanence acquisition and implications for paleointensity data, Earth Planet. Sci. Lett., 256: 81-89.

Garcés, M. and J.S. Gee, 2007, Paleomagnetic evidence of large footwall rotations associated with low-angle faults at the Mid-Atlantic Ridge, Geology, 35: 279-282.

Yu, Y.J., Tauxe, L. and J.S. Gee, 2007, A linear field dependence of thermoremanence in low magnetic fields, Phys. Earth Planet. Int., 162, 244-248.

Bowles, J., Gee, J.S., Kent, D.V., Perfit, M.R., Soule, S.A. and D.J. Fornari, 2006, Paleointensity applications to timing and extent of eruptive activity, 9°-10°N East Pacific Rise, Geochemistry, Geophysics, Geosystems, 7 (6), 10.1029/2005GC001141.

Bowles, J., Gee, J.S., Kent, D.V., Bergmanis, E., and J. Sinton, 2005, Cooling rate effects on paleointensity estimates in submarine basaltic glass and implications for dating young flows, Geochemistry, Geophysics, Geosystems, 6 (7), 10.1029/2004GC000900 (24 pages).

Yu, Y.J. and J.S. Gee, 2005, Spinel in Martian meteorite SaU 008: implications for Martian magnetism, Earth Planet. Sci. Lett., 222, 287-294.

Gee, J.S., Meurer, W.P., Selkin, P.A. and M.J. Cheadle, 2004, Quantifying three-dimensional silicate fabrics in cumulates using cumulative distribution functions, J. Petrology, 45: 1983-2009, doi:10.1093/petrology/egh045.

Varga, R.J., Karson, J.A. and J.S. Gee, 2004, Paleomagnetic constraints on deformation models for uppermost oceanic crust exposed at the Hess Deep Rift: implications for axial processes at the East Pacific Rise, J. Geophys. Res., 109, B02104, doi:10.1029/2003JB002486.

Blackman, D.K., Karson, J.A., Kelley, D.S., Cann, J.R., Fruh-Green, G., Gee, J.S., Hurst, S., John, B.E., Morgan, J., Nooner, S., Ross, D.K., Schroeder, T. and B. Williams, 2004, Geology of the Atlantis Massif (Mid-Atlantic Ridge, 30°N): implications for the evolution of an ultramafic oceanic core complex, Marine Geophysical Researches, 23: 443-469.

Bowles, J., Tauxe, L., Gee, J., McMillan, D. and S. Cande, 2003, The source of tiny wiggles in Chron C5: a comparison of sedimentary relative intensity and marine magnetic anomalies, Geochemistry, Geophysics, Geosystems, 4 (6), 10.1029/2002GC000489 (19 pages).

Bowles, J., Gee, J., Hildebrand, J., Tauxe, L., 2002, Archeomagnetic intensity results from California and Ecuador: evaluation of regional data, Earth Planet. Sci. Lett., 203: 967-981.

Gee, J.S. and S.C. Cande, 2002, A surface-towed vector magnetometer, Geophys. Res. Lett., vol. 29, 10.1029/2002GL015245 (4 pages).

Parker, R.L. and J.S. Gee, 2002, Calibration of the pass-through magnetometer - II. Application, Geophys. J. Int., 150: 140-152.

Meurer, W.P. and J. Gee, 2002, Evidence for the protracted construction of slow-spread oceanic crust by small magmatic injections, Earth Planet. Sci. Lett., 201: 45-55.

Gee, J. and W.P. Meurer, 2002, Slow cooling of middle and lower oceanic crust inferred from multicomponent magnetizations of gabbroic rocks from the Mid-Atlantic Ridge south of the Kane fracture zone (MARK) area, J. Geophys. Res., 107(B7), 10.1029/2000JB000062 (18 pages).

Gee, J.S., Webb, S.C., Ridgway, J., Staudigel, H. and M.A. Zumberge, 2001, A Deep-Tow magnetic survey of Middle Valley, Juan de Fuca Ridge, Geochemistry, Geophysics, Geosystems, vol. 2, 2001GC000170 (20 pages).

Lawrence, R.L., Gee, J.S. and J.A. Karson, 2002, Magnetic anisotropy of serpentinized peridotites from the MARK area: implications for the orientation of mesoscopic structures and major fault zones, J. Geophys. Res., 107, 10,1029/2000JB000007 (14 pages).

Kelley, D.S., Karson, J.A., Blackman, D.K., Fruh-Green, G.L., Butterfield, D.A., Lilley, M.D., Olson, E.J., Schrenk, M.O., Roe, K.K., Lebon, G.T., Rivizzigno, P., and AT3-60 Shipboard Party, An off-axis hydrothermal vent field near the Mid-Atlantic Ridge at 30°N, Nature, 412: 145-149.

Bowers, N.E., Cande, S.C., Gee, J., Hildebrand, J.A. and R.L. Parker, 2001, Fluctuations of the paleomagnetic field during chron C5 as recorded in near bottom marine magnetic anomaly data, J. Geophys. Res., 106: 26,379-26,396.

Selkin, P.A., Gee, J.S., Tauxe, L., Meurer, W.P. and A. Newell, 2000, The effect of remanence anisotropy on paleointensity estimates: a case study from the Archean Stillwater Complex, Earth Planet. Sci. Lett., 183, 403-416.

Gee, J., Cande, S.C., Hildebrand, J.A., Donnelly, K. and R.L. Parker, 2000, Geomagnetic intensity variations over the past 780 kyr obtained from near-seafloor magnetic anomalies, Nature, 408, 827-832.

Dick, H.J.B., Natland, J.H., Alt, J.C., Bach, W., Bideau, D., Gee, J.S., Haggas, S., Hertogen, J.G.H., Hirth, G., Holm, P.M., Ildefonse, B., Iturrino, G.J., John, B.E., Kelley, D.S., Kikawa, E., Kingdon, A., LeRoux, P.J., Maeda, J., Meyer, P.S., Miller, D.J., Naslund, H.R., Niu, Y.-L., Robinson, P.T., Snow, J., Stephen, R.A., Trimby, P.W., Worm, H.-U. and A. Yoshinobu, 2000, A long in-situ section of the lower oceanic crust: results of ODP Leg 176 drilling at the Southwest Indian Ridge, Earth Planet. Sci. Lett., 179, 31-51.

Staudigel, H., Gee, J.S., Tauxe, L., Bogaard, P., Haspels, J., Kale, G., Leenders, A., Meijer, P., Swaak, B., Tuin, M., Soest, T.V., Verdurmen, E.A.Th. and A. Zevenhuizen, 1999, Geochemistry and intrusive directions in sheeted dikes in the Troodos ophiolite: implications for mid-ocean ridge spreading centers, Geochemistry, Geophysics, Geosystems, 1, Paper number 1999GC000001.

Herbert, T.D., Gee, J. and S. DiDonna, 1999, Precessional cycles in late Cretaceous pelagic sediments of the South Atlantic: long-term patterns from high-frequency climate variations, in Evolution of the Cretaceous Ocean-Climate System, E. Barrera and C.C. Johnson, eds., SEPM Special Paper, 332, 105-120.

Varga, R.J., Gee, J.S., Bettison-Varga, L., Anderson, R.S. and C.L. Johnson, 1999, Early establishment of seafloor hydrothermal systems during structural extension: paleomagnetic evidence from the Troodos ophiolite, Cyprus, Earth Planet. Sci. Lett., 171, 221-235.

Gee, J. and D.V. Kent, 1999, Calibration of magnetic granulometric trends in oceanic basalts, Earth Planet. Sci. Lett., 170, 377-390.

Gee, J. and D.V. Kent, 1998, Magnetic telechemistry and magmatic segmentation on the southern East Pacific Rise, Earth Planet. Sci. Lett., 164, 379-385.

Juárez, M.T., Tauxe, L., Gee, J.S. and T. Pick, 1998, The intensity of the Earth's magnetic field over the past 160 million years, Nature, 394, 878-881.

Tauxe, L., Gee, J.S. and H. Staudigel, 1998, Flow directions in dikes from anisotropy of magnetic susceptibility data: the bootstrap way, J. Geophys. Res., 103, 17,775-17,790.

Varga, R.J., Gee, J.S., Staudigel, H. and L. Tauxe, 1998, Dike surface lineations as magma flow indicators within the sheeted dike complex of the Troodos Ophiolite, Cyprus, J. Geophys. Res., 103, 5241-5256.

Gee, J. and D.V. Kent, 1997, Magnetization of axial lavas from the southern East Pacific Rise (14°-23°S): geochemical controls on magnetic properties, J. Geophys. Res., 102, 24,873-24,886.

Johnson, H.P., Kent, D.V., Tivey, M.A., Gee, J.S., Larson, R.L. and R.W. Embley, 1997, Conference on the magnetization of the oceanic crust steers future research, EOS, Trans. Amer. Geophys. Union, 78, 199-200, 202.

Gee, J., Schneider, D.A. and D.V. Kent, 1996, Marine magnetic anomalies as recorders of geomagnetic intensity variations, Earth Planet. Sci. Lett., 144, 327-336.

Kent, D.V. and J. Gee, 1996, Magnetic alteration of zero-age oceanic basalt, Geology, 24, 703-706.

Lawrence, R., Gee, J. and S. Hurst, 1996, Magnetic anisotropy in serpentinized peridotites from ODP Site 920: its origin and relationship to deformational fabrics, Proc. ODP, Sci. Results, 153, 419-427.

Hurst, S., Lawrence, R., and J. Gee, 1996, Data Report: Reorientation of structural features at Sites 920 to 924 using remanent magnetization and magnetic characteristics, Proc. ODP, Sci. Results, 153, 547-559.

Gee, J., Lawrence, R., and S. Hurst, 1996, Remanence characteristics of gabbros from the MARK area: implications for crustal magnetization, Proc. ODP, Sci. Results, 153, 429-436.

Tarduno, J.A. and J. Gee, 1995, Large-scale motion between Pacific and Atlantic hotspots, Nature, 378, 477-480.

Christie, D.M., Dieu, J.J., and Gee, J., 1995, Petrologic studies of basement lavas from NW Pacific guyots, ODP Leg 144, Proc. ODP, Sci. Results, 144, 495-512.

Nakanishi, M. and J.S. Gee, 1995, Paleomagnetic investigations of Leg 144 volcanic rocks: paleolatitudes of the northwestern Pacific guyots, Proc. ODP, Sci. Results, 144, 585-604.

Gee, J. and M. Nakanishi, 1995, Magnetic petrology and magnetic properties of western Pacific guyots: implications for seamount paleopoles, Proc. ODP, Sci. Results, 144, 615-630.

Gee, J., and D.V. Kent, 1995, Magnetic hysteresis in young mid-ocean ridge basalts: dominant cubic anisotropy?, Geophys. Res. Lett., 22: 551-554.

Kent, D.V., and J. Gee, 1994, Grain size dependent alteration and the magnetization of oceanic basalts, Science, 265: 1561-1563.

Tauxe, L., J. Gee, Y. Gallet, T. Pick, and T. Bown, 1994, Magnetostratigraphy of the Willwood Formation Southern Big Horn Basin, Wyoming, Earth Planet. Sci. Lett., 125: 159-172.

Gee, J., and D. V. Kent, 1994, Variations in Layer 2A thickness and the origin of the Central Anomaly magnetic high, Geophys. Res. Lett., 21: 297-300.

Gee, J., R. Varga, Y. Gallet, and H. Staudigel, 1993, Reversed polarity overprint in dikes from the Troodos ophiolite: implications for the timing of alteration and extension, Geology, 21: 849-852.

Gee, J., H. Staudigel, L. Tauxe, T. Pick, and Y. Gallet, 1993, Magnetization of the La Palma Seamount Series: implications for seamount paleopoles, J. Geophys. Res., 98: 11,743-11,767.

Gallet, Y., Gee, J., Tauxe, L., and J. Tarduno, 1993, Paleomagnetic analyses of short normal polarity magnetic anomalies in the Matuyama Chron, Proc. Ocean Drill. Prog., Sci. Res., 130: 547-559.

Klootwijk, C.T., Gee, J.S., Peirce, J.W., and G.M. Smith, 1992, The origin of Ninetyeast Ridge: paleomagnetic constraints from ODP Leg 121, J. Southeast Asian Earth Sci., 7: 247-252.

Friedman, R., Gee, J., Tauxe, L., Downing, K., and E. Lindsay, 1992, The magne¬tostratigraphy of the Chitarwata and lower Vihowa formations of the Dera Ghazi Khan area, Pakistan, Sed. Geol., 81: 253-268.

Klootwijk, C.T., Gee, J.S., Peirce, J.W., and G.M. Smith, 1992, Neogene evolution of the Himalayan-Tibetan region: constraints from ODP Site 758, northern Ninetyeast Ridge; bearing on climatic change, Palaeogeography, Palaeoclimatology, Palaeoecology, 95: 95-110.

Staudigel, H., Gee, J., Tauxe, L., and R.J. Varga, 1992, Shallow intrusive directions of sheeted dikes in the Troodos ophiolite: anisotropy of magnetic susceptibility and structural data, Geology, 20: 841-844.

Klootwijk, C. T., Gee, J.S., J. W. Peirce, G.M. Smith, and P.L. McFadden, 1992, An early India-Asia contact: Paleomagnetic constraints from Ninetyeast Ridge, ODP Leg 121, Geology, 20: 395-398.

Pospichal, J.J., Dehn, J., Driscoll, N.W., van Eijden, A.J.M., Farrell, J.W., Fourtanier, E., Gamson, P., Gee, J., Janacek, T.R., Jenkins, D.G., Klootwijk, C., Nomura, R., Owen, R.M., Rea, D.K., Resiwati, P., Smit, J., Smith, G., 1991, Cretaceous-Paleogene biomagnetostratigraphy of sites 752-755, Broken Ridge: a synthesis, Proc. ODP, Sci. Results, 121: 721-742.

Klootwijk, C. T., Gee, J.S., Smith, G.M. and J. W. Peirce, 1991, Constraints on the India-Asia convergence: Paleomagnetic results from Ninetyeast Ridge, ODP Leg 121, Proc. ODP, Sci. Results, 121: 777-884.

Smith, G.M., Gee, J. and C.T. Klootwijk, 1991, Magnetic petrology of basalts from Ninetyeast Ridge, Proc. ODP, Sci. Results, 121: 525-546.

Gee, J., Tauxe, L. and E. Barg, 1991, Lower Jaramillo polarity transition records from the equatorial Atlantic and Indian Oceans, Proc. ODP, Sci. Results, 121: 377-394.

Gee, J., Klootwijk, C.T. and G. M. Smith, 1991, Magnetostratigraphy of Paleogene and upper Cretaceous sediments from Broken Ridge, eastern Indian Ocean, Proc. ODP, Sci. Results, 121: 359-376.

Pringle, M., Staudigel, H. and J. Gee, 1991, Jasper Seamount: seven million years of volcanism, Geology, 19: 364-368.

Gee, J., Staudigel, H. and J.H. Natland, 1991, Geology and petrology of Jasper Seamount, J. Geophys. Res., 96: 4083-4105.

Gee, J., Staudigel, H. and L. Tauxe, 1989, Contribution of induced magnetization to magnetization of seamounts, Nature, 342: 170-173.

Sempere, J.-C., Gee, J., Naar, D.F. and R. N. Hey, 1989, Three-dimensional inver¬sion of the magnetic field over the Easter-Nazca propagating rift near 25°S, 112°25'W, J. Geophys. Res., 94: 17,409-17,420.

Winterer, E. L., Gee, J.S. and R. J. Van Waasbergen, 1988, The source area for Lower Cretaceous clastic sediments of the Galicia Margin: geology and tectonic and ero¬sional history, Proc. ODP, Sci. Results, 103: 697-732.

Gee, J., Tauxe, L., Hildebrand, J.A., Staudigel, H. and P. Lonsdale, 1988, Nonuniform magnetization of Jasper Seamount, J. Geophys. Res., 93: 12,159-12,176.