Joann M. Stock

Photo by Keith Sutter. Hat courtesy of Beth Stock.

Joann M. Stock
Ph.D., Massachusetts Institute of Technology;
Professor of Geology and Geophysics.
Global and regional plate motions; marine magnetics and seismic stratigraphy related to evolution of the Pacific and Antarctic plates; structural geology and volcanism around the Gulf of California; GPS measurements in Jalisco, Mexico; crustal stresses; borehole stress measurements and breakout analysis.

email: jstock@gps.caltech.edu

my CV


Current (Fall term 2009) Teaching:

Ge121a Advanced Field and Structural Geology

Ge161 Plate Tectonics


Past Teaching:

Ge111a and b (Applied Geophysics) , co-taught with Rob Clayton, Winter and Spring quarters, 2009

Ge120, Field Geology, August/September 2008 (co-taught with Jason Saleeby)


Some Past Field Expeditions:

Spring 2000: Reforma 2000

Fall 2002: NBP0207 and NBP0209 cruises

Feb. 2006: NBP0602 cruise


Upcoming Field Projects:

early 2010: Salton Trough Seismic Experiment


Ongoing Research in Tectonics

Joann Stock's research interests involve a wide range of tectonic problems, including global and regional plate tectonic questions, and geological and geophysical field studies related to plate boundary evolution. Below are examples of several studies being pursued by her research group.

The Tectonic Evolution of the Gulf of California

Marine Geophysics of the Southwest Pacific -Antarctic region

Marine Geophysics of the Manihiki Plateau region

Stress Field Variations Around the Los Angeles Region

GPS Investigations in the Jalisco region, Mexico

Remote Sensing Flight for Volcanic Hazards Assessment, Baja California, Mexico

High-resolution multichannel seismic cruise in the northern Gulf of California, Mexico

Salton Seismic Imaging Project


Publications, past ten years

Marks, K. M., J. M. Stock, and K. Quinn, Evolution of the Australian-Antarctic discordance since Miocene time , J. Geophys. Res.,v. 104, no. B3, p. 4967-4981, 1999.

Stock, J. M., C. J. Lewis and E. A. Nagy, The tuff of San Felipe: An extensive middle Miocene pyroclastic flow deposit in Baja California, Mexico, Journal of Volcanology and Geothermal Research, v.93 (1-2), p. 53-74, 1999.

Nagy, E. A., Grove, M., and Stock, J. M., Age and stratigraphic relationships of pre- and syn-rift volcanic deposits in the northern Puertecitos Volcanic Province, Baja California, Mexico, Journal of Volcanology and Geothermal Research, v. 93 (1-2), p. 1-30, 1999.

Holt, J. W., E. W. Holt, and J. M. Stock, An age constraint on Gulf of California rifting from the Santa Rosalia Basin, Baja California Sur, Mexico, , Geol. Soc. Am. Bulletin, v. 112, no. 4, p. 540-549, 2000.

Nagy, E. A., and Stock, J. M., Structural controls on the Continent-Ocean Transition in the Northern Gulf of California, Journal of Geophysical Research, v. 105, no. B7, p. 16,251-16,269, July 2000.

Billen, M. I., and Stock, J. M., Morphology and origin of the Osbourn Trough, Journal of Geophysical Research, v. 105, p. 13,481-13,489, 2000.

Heinemann, J., J. Stock, R. Clayton, K. Hafner, S. Cande, C. Raymond, Constraints on the proposed Marie Byrd Land - Bellingshausen plate boundary from seismic reflection data, Journal of Geophysical Research, v. 104, no. B11, p. 25,321-25,330, 1999.

Cande, S. C., J. M. Stock, R. D. Muller, and T. Ishihara, Cenozoic motion between East and West Antarctica, Nature, v. 404, p. 145-150, 2000.

Raymond, C. A., J.M. Stock, and S. C. Cande, Fast Paleogene Motion of the Pacific Hotspots from Revised Plate Circuit Constraints, in M. A. Richards, R. G. Gordon, and R. D. van der Hilst, eds., History and Dynamics of Global Plate Motions, AGU Geophysical Monograph 121, p. 359-375, 2000. correction

Muller, R. D., C. Gaina, A. Tikku, D. Mihut, S. C. Cande, and J.M. Stock, Mesozoic/Cenozoic Tectonic Events Around Australia, in M. A. Richards, R. G. Gordon, and R. D. van der Hilst, eds., History and Dynamics of Global Plate Motions, AGU Geophysical Monograph 121, p. 161-188, 2000.

Stock, J. M., Relation of the Puertecitos Volcanic Province, Baja California, Mexico, to development of the plate boundary in the Gulf of California, in Delgado-Granados, H., Aguirre-Diaz, G., and Stock, J. M., eds., Cenozoic Tectonics and Volcanism of Mexico: Boulder, Colorado, Geological Society of America Special Paper 334, p. 143-156, 2000.

Oskin, M., J. Stock, and A. Martin-Barajas, Rapid localization of Pacific-North America plate boundary motion in the Gulf of California, Geology, v. 29, no. 5, p. 459-462, 2001.

Masterlark, T., C. DeMets, H. F. Wang, O. Sanchez, and J. Stock, Homogeneous vs. heterogeneous subduction zone models: coseismic and postseismic deformation, Geophys. Res. Lett., v. 28, no. 21, p. 4047-4050, Nov. 1, 2001.

Hutton, W., C. DeMets, O. Sanchez, G. Suarez, and J. Stock, Slip kinematics and dynamics during and after the 1995 October 9 Mw=8.0 Colima-Jalisco earthquake, Mexico, from GPS geodetic constraints, Geophys. J. Int., v. 146, p. 637-658, 2001.

Larson, R. L., R. A. Pockalny, R. F. Viso, E. Erba, L. J. Abrams, B. P. Luyendyk, J. M. Stock, and R. W. Clayton, Mid-Cretaceous tectonic evolution of the Tongareva triple junction in the southwestern Pacific basin, Geology, v. 30, no. 1, p. 67-70, 2002.

Marks, K. M., and J. M. Stock, Evolution of the Malvinas Plate south of Africa, Marine Geophysical Researches, v. 22, 289-302, 2001.

Melbourne, T., F. Webb., J. Stock, and C. Reigber, Rapid postseismic transients in subduction zones from continuous GPS, J. Geophys. Res., v. 107, no. B10, 2241, doi:10.1029/2001JB000555, 2002.

Stock, J. M., and S. C. Cande, Tectonic History of Antarctic Seafloor in the Australia-New Zealand-South Pacific Sector: Implications for Antarctic Continental Tectonics, "Antarctica at the close of a Millenium", edited by J. A. Gamble, D.N. B. Skinner, and S. Henrys, Royal Society of New Zealand Bulletin 35, p. 251-259, 2002.

Oskin, M., and J. Stock, Marine incursion synchronous with plate boundary localization in the Gulf of California, Geology, v. 31, no 1, p. 23-26, 2003.

Oskin, M., and J. Stock, Miocene to Recent Pacific-North America plate motion and opening of the Upper Delfin Basin, northern Gulf of California, Mexico, Geological Society of America Bulletin, v. 115, no. 10, pp. 1173-1190, 2003.

Persaud, P., J. M. Stock, M. S. Steckler, A. Martin-Barajas, J. B. Diebold, A. Gonzalez-Fernandez, G. S. Mountain, Active deformation and shallow structure of the Wagner, Consag, and Delfin Basins, northern Gulf of California, Mexico, J. Geophys. Res., vol. 108, No. B7, 2355, doi:10.1029/2002JB001937, 31 July 2003.

Stock, J. M., Hotspots come unstuck, Science, v 301 (no 5636), 1059-1060, Aug 22, 2003.

McQuarrie, N., J. M. Stock, C. Verdel, and B. P. Wernicke, Cenozoic evolution of Neotethys and implications for the causes of plate motions, Geophys. Res. Lett., v. 30, no. 20, p. 2036, doi:10.1029/2003GL017992, 2003.

S. C. Cande and J. M. Stock, Pacific-Antarctic- Australia motion and the formation of the Macquarie plate, Geophys. J. Int., v. 157, p. 399-414, 2004.

Oskin, M., and J. Stock, Cenozoic stratigraphy and tectonics of the continental margins of the Upper Delfin Basin, northeastern Baja California and western Sonora, Mexico, in S. Johnson, S. Paterson, et al., eds., Tectonic Evolution of Northwestern Mexico and the Southwestern USA, GSA Special Paper 374, p. 421-438, 2004.

Cande, S. C. and J. M. Stock, Cenozoic reconstructions of the Australia-New Zealand-South Pacific Sector of Antarctica, in "The Cenozoic Southern Ocean: Tectonics, Sedimentation and Climate Change Between Australia and Antarctica ", edited by Neville F. Exon, James P. Kennett, and Mitchel J. Malone, AGU Monograph Series v. 151, p. 5-18, 2004.

Hook, S. J., J. E. Dmochowski, K. A. Howard, L. C. Rowan, K. E. Karlstrom, and J. M. Stock, Mapping variations in weight percent silica from multispectral thermal infrared imagery - Examples from the Hiller Mountains, Nevada, USA and Tres Virgenes-La Reforma, Baja California Sur, Mexico, Remote Sensing of Environment, v. 95, issue, 3, 15 April 2005, p. 273-289, 2005.

Muller, R. D., S. C. Cande, J. M. Stock, and W. R. Keller (2005), Crustal structure and rift flank uplift of the Adare Trough, Antarctica, Geochem. Geophys. Geosyst., 6, Q11010, doi: 10.1029/2005GC001027.

Downey, N. J., J. M. Stock, R. W. Clayton, and S. C. Cande (2007), History of the Cretaceous Osbourne Spreading Center, Journal of Geophysical Research, v. 112, B04102, doi:10.1029/2006JB004550.

Davey, F. J., S. C. Cande, and J. M. Stock, Extension in the western Ross Sea region - links between Adare Basin and Victoria Land Basin, Geophysical Research Letters,v. 33, no 20., L20315, 28 Oct. 2006.

Schmitt, S. V., C. DeMets, J. Stock, O. Sanchez, B. Marquez-Azua and G. Reyes, A geodetic study of the 2003 January 22 Tecoman, Colima, Mexico earthquake, Geophys. J. Intl., v. 169, p. 389-406, 2007.

Ai, H-A., J. M. Stock, R. Clayton, and B. Luyendyk, Vertical Tectonics of the High Plateau region, Manihiki Plateau, Western Pacific, from seismic stratigraphy, Mar. Geophys. Res., v. 29, p. 13-26, DPI 10.1007/s11011-008-9042-0, 2008.

Croon, M. M., S. C. Cande, and J. M. Stock, Revised Pacific-Antarctic plate motions and geophysics of the Menard Fracture zone, Geochem. Geophys. Geosyst.,v. 9, no. 7, Q07001, doi:10.1029/2008GC002019, 2008.

Vidal-Solano, J. R., H. Lapierre, J. M. Stock, A. Demant, F. A. Paz Moreno, D. Bosch, P. Brunet and A. Amortegui, Isotope geochemistry and petrogenesis of peralkaline Middle Miocene ignimbrites from central Sonora: relationship with continental break-up and the birth of the Gulf of California, Bull. Soc. geol. Fr., v. 179, no. 5, p. 453-461, 2008.

Molnar, P., and J. Stock, A slowing of India's convergence with Eurasia at ~10 Ma and its implications for Tibetan mantle dynamics, Tectonics,28, TC3001, doi 10.1029/2008TC002271, 2009.


last modified: 26 September 2009