Research Terms
Mineralogy Petrology Science Education
Journal Articles:
Ryan, J.G. and C.H. Langmuir (1987) The systematics of lithium abundances in young volcanic rocks. Geochim. Cosmochim. Acta 51, pp. 1727-1741.
Ryan, J.G. and C.H. Langmuir (1988) Beryllium systematics in young volcanic rocks: implications for 10Be. Geochim. Cosmochim. Acta 52, pp 237-244.
Bebout, G.E., Ryan, J.G. and W.P. Leeman (1991) Boron and beryllium concentrations in subduction-related metamorphic rocks of the Catalina Schist: implications for subduction-zone reycling. 1991 Report to the Director, Geophysical Laboratory, 23-29.
Tsvetkov, A A, O N Volynets, J.D. Morris, F. Tera, and J. G. Ryan (1991) Problema subduktsii osadkov v svete dannykh po geokhimii berilliya i bora v magmaticheskikh porodakh zony perehkoda okean-kontinent. (Sediment subduction in light of data on beryllium and boron geochemistry in magmatic rocks of the oceanic-continent transitional zone.) Izvestiya Akademii Nauk SSSR. Seriya Geologicheskaya, vol.1991, no.11, pp.3-25.
Ryan, J.G. and C.H. Langmuir (1993) The systematics of boron abundances in young volcanic rocks. Geochimica Cosmochimica Acta. 57, 1489-1498.
Bebout, G.E., Ryan, J.G., and W.P. Leeman (1993) B-Be systematics in subduction-related metamorphic rocks: characterization of the subducted component. Geochim. Cosmochim. Acta 57 2227-2237.
Morris, J., Ryan, J.G., and Leeman W.P. (1993) Be Isotope and B-Be Investigations of the historic eruptions of Mt. Vesuvius. J. Volcanol. Geotherm. Res. 58, 345-358.
Ryan, J.G., Morris J.D., Tera F., Leeman W.P. and Tsvetkov A. (1995) Cross-arc geochemical variations in the Kurile island arc as a function of slab depth. Science., 270, 625-628.
Ryan, J.G., Leeman, W.P., Morris, J.D. and Langmuir, C.H. (1996) The boron systematics of intraplate lavas: implications for crust and mantle evolution. Geochimica et Cosmochimica Acta. 60, 415-422.
Hochstaedter, A.F., Ryan, J.G., Luhr, J.F., and Hasenake, T. (1996) On B/Be systematics of the Mexican Volcanic Belt. Geochimica et Cosmochimica Acta. 60, 613-628.
Noll, P.D., Newsom, H.E., Leeman, W.P., and Ryan, J.G. (1996) The role of hydrothermal fluids in the production of subduction zone magmas: evidence from siderophile and chalcophile trace elements and boron. Geochimica et Cosmochimica Acta. 60, 587-611.
Tenthorey, E.A., Ryan, J.G. and Snow, E.A. (1996) The petrogenesis of a sapphirine-bearing meta-troctolite in the Buck Creek ultramafic body, Clay County, N.C. Journal of Metamorphic Geology, 14, 103-114.
Ryan, J.G., J. Morris, G. Bebout, and W.P. Leeman (1996) Describing chemical fluxes in subduction zones: insights from "depth profiling" studies of arc and forearc rocks. In:Subduction: Top to Bottom, (G.E. Bebout, et al., eds.) AGU Monograph 96, 263-268.
Ryan, J.G. (1999) Beryllium. Encyclopedia of Geochemistry (Marshall, C., and R. Fairbridge, eds.) pp. 29-30.
Bebout, G.E., Ryan, J.G., Leeman, W.P., and Bebout, A.E. (1999) Fractionation of trace elements by subduction zone metamorphism: significance for models of crust-mantle mixing. Earth and Planetary Science Letters, 177, 69-83.
Tomascak, P. J.G. Ryan, and M.J.Defant (2000). Lithium isotopes and light elements depict incremental slab contributions to the subarc mantle in Panama. Geology, 28, 507-510.
Davis, R.A., A.T. Welty, J. Borrego, J.A. Morales, J. G. Pendon, and J.G. Ryan (2000) Rio Tinto Estuary (Spain): 5000 years of pollution. Environmental Geology, 39, 1107-1116.
Dixon, J.E., K. Simons, L. Leist, C. Eck, J. Ricisak, J. Gifford, and J.G. Ryan (2000), Provenance of stone celts from the Miami Circle archaeological site. The Florida Anthropologist, 53, 328-341.
McSween, H.Y., Jr., T.L. Grove, R.C.F. Lentz, J.C. Dann, A.H. Holzheid, L.R. Riciputi, and J.G.Ryan (2001) Geochemical evidence for magmatic water within Mars from pyroxenes in the Shergotty meteorite. Nature, vol. 409, p. 487-490.
Benton, L.D., J.G. Ryan, and F. Tera (2001) Boron isotope systematics of slab fluids as inferred from a serpentinite seamount, Mariana forearc. Earth and Planetary Science Letters, 187, p. 273-282.
Berger, S, Cochrane, D., Simons, K. Savov I., J.G. Ryan, and V.L Peterson (2001) Insights from rare earth elements into the genesis of the Buck Creek Complex and other Blue Ridge ultramafic bodies. Southeastern Geology, 40, p. 201-212.
Savov, I. J.G. Ryan, I. Haydoutov, and J. Schijf. (2001) Late Precambrian Balkan-Carpathian Ophiolite - a slice of the Pan-African ocean crust? Geochemical and tectonic insights from the Tcherni Vrah and Deli Jovan massifs, Bulgaria and Serbia. Journal of Volcanology and Geothermal Research, 110, 299-318.
Lentz, R.C.F., H.Y. McSween, J.G. Ryan, and R.L. Riciputi (2001) Water in martian magmas: Clues from light lithophile elements in shergottite and nakhlite pyroxenes. Geochim. Cosmochim. Acta, 65, 4551-4565.
Hickey-Vargas, R., Sun, M., Lopez Escobar, L., H.M. Roa, M. Reagan, J. Morris, and J. G. Ryan (2002) Multiple subduction components in the mantle wedge: Evidence from eruptive centers in the Central Southern Volcanic Zone, Chile. Geology, 30: 199-202.
Tomascak, P.B., E. Widom, L. D. Benton, S.J. Goldstein, and J. G. Ryan, (2002) The control of Lithium Budgets in Island Arcs. Earth and Planetary Science Letters, v. 196, pp 227-238.
Ryan, J.G. (2002) The trace-element behavior of beryllium in terrestrial materials. In Grew. E. ed.: Beryllium: Mineralogy and Geochemistry. Reviews of Mineralogy and Geochemistry , vol. 50, pp. 121-145
George, R., Turner, S., Hawkesworth, C., Morris, J., Nye, C., Ryan, J.G. and Zheng, S-H (2003) Melting processes and fluid and sediment transport rates along the Alaska-Aleutian arc from an integrated U-Th-Ra-Be isotope study. Journal of Geophysical Research, v. 108, no. B5, 2252,doi:10.1029/2002JB001916.
Peterson, VL, J.G. Ryan, SP Yurkovich, SE Kruse and J. Burr A collaborative field-laboratory summer Research Experiences for Undergraduates (REU) program in geosciences. CUR Quarterly, Sept. 2003, p. 5-9.
Morris, J.D., and J.G. Ryan (2003) Chapter 2.11: Subduction zone processes and implications for changing composition of the upper and lower mantle. Treatise on Geochemistry, Part 2: The Mantle (Carlson, R., ed.), Chapter 2.11, pp. 451-470.
Lang, H., Lee, A., Peterson, V. and J.G. Ryan (2004) Coexisting clinpyroxene/spinel and amphibole/spinel symplectites in metatroctolites from the Buck Creek ultramafic body, North Carolina Blue Ridge, USA. American Mineralogist, v. 89, pp. 20-30.
Benton, L., J.G. Ryan, and I. Savov (2004) Lithium abundance and isotope systematics of forearc serpentinites, Conical Seamount, Mariana forearc: Insights into the mechanisms of slab/mantle exchange during subduction. Geochemistry, Geophysics, Geosystems, v. 5, 10.1029/2004GC000708.
Ryan, J.G. and Kyle, P.R. (2004) Lithium and lithium isotope variations in intraplate mantle sources: insights from McMurdo Group lavas (Mt. Erebus) and other intraplate volcanic rocks. Chemical Geology, v. 212, pp 125-142.
Savov, I.P., S. Guggino, J.G. Ryan, P. Fryer, and M. Mottl, (2005) Geochemistry of serpentine muds and metamorphic rocks from the Mariana Forearc, ODP Sites 1200 and 778 -779, S.Chamorro and Conical seamounts. Proceedings of the Ocean Drilling Program, Scientific Results, 195, MS 195SR-103 (www-odp.tamu.edu/publications/195_SR/ 103/103.htm).
Savov, I.P., Ryan, J.G., Kelley, K. and Mattie, P.D. (2005) Geochemistry of serpentinites from the Mariana Forearc- Conical Seamount, ODP Leg 125: describing fluid-mediated slab additions. Geochemistry, Geophysics, Geosystems, 6, Q04J15 DOI10.1029/2004GC000777.
George, R., S. Turner, J. Morris, T. Plank, C. Hawkesworth and J.G. Ryan (2005) Pressure-temperature-time paths of sediment recycling beneath the Tonga-Kermadec Arc. Earth and Planetary Science Letters, 233, p. 195-211.
Savov, I.P., R. Hickey- Vargas, M. D'Antonio, and J.G. Ryan, (2005) Petrology and Geochemistry of West Philippine Back-arc Basin Basalts and Early Palau-Kyushu Arc volcaniclasts from ODP Leg 195, Site 1201:Implications for the evolution of the Izu- Bonin-Mariana subduction factory. Journal of Petrology, available online 8/31/05, doi:10.1093/petrology/egi075.
Ryan, J.G., S.P. Yurkovich, V.L. Peterson, J. Burr, S. Kruse, and the 2001 REU Site Program Participants. (2005) Geology and petrogenesis of mafic and ultramafic rocks of the Willets-Addie area, Central Blue Ridge, NC. In Hatcher, R.D. and Merschatt, A.J (eds.) Blue Ridge Geology Geotraverse East of the Great Smoky Mountains National Park, Western North Carolina. Guidebook of the 2005 Carolina Geological Society annual field trip, pp. 91-98.
Swanson, S., L. Raymond, R. Warner, J.G. Ryan, S. P. Yurkovich, V.L. Peterson (2005) Petrotectonics of mafic and ultramafic rocks in Blue Ridge terranes of western North Carolina and northern Georgia. In Hatcher, R.D. and Merschatt, A.J (eds.) Blue Ridge Geology Geotraverse East of the Great Smoky Mountains National Park, Western North Carolina. Guidebook of the 2005 Carolina Geological Society annual field trip, pp. 73-91.
Peterson, V., J.G. Ryan, S. P. Yurkovich, J. Burr, S. Kruse, and the 1997-2001 REU Site Program Participants (2006) The Petrogenesis and tectonic implications of Blue Ridge mafic-ultramafic rocks: The Buck Creek and Carroll Knob complexes, and rocks of the Addie-Willets region. 2006-2007 GSA Southeastern Section Field Trips guidebooks.
Singer, B.S., B.R. Jicha, W.P. Leeman, M.F. Thirwall, N.W. Rogers, and J.G. Ryan (2007) Along strike trace element and isotopic variation in the Central Aleutian island arc basalt: subducted sediments melt and and serpentine dehydrates Journal of Geophysical Research, v. 112, doi:10.1029/2006JB004897.
Savov, I.P., Ryan, J.G., D’Antonio, M. and P. Fryer (2007) Petrology and geochemistry of serpentinized peridotites from Mariana Forearc, South Chamorro Seamount, ODP Leg 195: Implications for the elemental recycling across and along the Mariana arc-basin system. Journal of Geophysical Research, v. 112, doi:10.1029/2006JB004749.
Agostini, S., J.G. Ryan, S. Tonarini, and F. Innocenti (2008) Drying and dying of a subducted slab: Coupled Li and B isotope variations in Western Anatolia Cenozoic volcanism. Earth Planet. Sci. Lett. 272, 139-147.
Peterson, V.L., J.G. Ryan, and the 1997-1998 REU Site Program Participants (2008) Geochemistry and petrogenesis of the Buck Creek mafic/ultramafic complex, western North Carolina. Geological Society of America Bulletin, v. 129, pp. 615-629.
Walker, J.A., A. Teipel, J.G. Ryan, and E. Syracuse (2009) Light elements and Li isotopes across the northern portion of the Central American subduction zone. Geochemistry, Geophysics, Geosystems, v. 10, Q06S16, doi:10.1029/2009GC002414
Ryan, J.G., and DePillis, L. (2010) Effective Collaborations to support Transformative Research. In: Karukstis, et al., eds.: Transformative Research at Predominantly Undergraduate Institutions: Proceedings from the Transformative Research Summit, Snowbird, UT. Council on Undergraduate Research, p. 89-96
Educational Resources (publicly available):
Updating/Enhancing Martian Image Analysis Activities for a General-Audience Planetary Science Course Using new MGS and Mars Odyssey visual and TE Datasets, and Google Earth. (2006) Downloadable presentation with embedded educational resources, Workshop Presentations, Discoveries from Mars: Using a Planetary Perspective to Enhance Undergraduate Geoscience Courses On the Cutting Edge collections, http://serc.carleton.edu/NAGTWorkshops/mars/workshop_presentations.html
Integrated Earth Data Applications, Board of Advisors; 2011 - present
National Association of Geoscience Teachers, Member; 2007 - present
National Science Teachers Association, Member; 2005 - present
National Association of Geoscience Teachers, Member; 1998 - present
Council on Undergraduate Research, Board of Advisors; 1996 - present
Meteoritical Society, Member; 1991 - present
Sigma Xi, Member; 1987 - present
Geochemical Society, Member; 1986 - present
American Geophysical Union, Member; 1984 - present
Geological Society of America, Member; 1984 - present
Mineralogical Society of America, Member; 1984 - present
Advanced Technological Education, National Science Foundation; 2005 - 2009
Course, Curriculum, and Laboratory Improvement-Adaptation and Implementation, National Science Foundation, Division of Undergraduate Education; 2003 - 2009
National STEM Education Digital Library Program (NSDL), National Science Foundation, Division of Undergraduate Education; 2003 - 2008
North Atlantic Treaty Organization (NATO) Fellowship, National Science Foundation, Division of Graduate Education; 2003 - 2003
Geoscience Education, National Science Foundation, Earth Sciences Research; 2002 - 2002
Science, Technology, Engineering, and Mathematics Talent Expansion Program (STEP), National Science Foundation, Earth Sciences Research; 2002 - 2002
Research Experiences for Undergraduates , National Science Foundation, Earth Sciences Research; 2001 - 2001
MARGINS Program , National Science Foundation; 1999 - 2007
University of South Florida 30338 USF Holly Dr. SCA528 Tampa, FL 33620