Past Presentations at Professional Meetings
Norrell, S., J.G. Ryan, and M.J. Defant, 1995, On the origins of adakites: evidence from B-Be-Li systematics in young lavas fromPanama. EOS Supplement 76, S289. 1995 AGU Spring Meeting.
Ryan, J.G., E. Tenthorey, A. Welty, M.R. Perfit, and C.H. Langmuir, 1995,Light element variations in lavas from the Woodlark Basin, Solomon Sea: the geochemical ramifications of ridge subduction. EOS Supplement 76, S288. 1995 AGU Spring Meeting.
Welty, A.T., R.A. Davis, and J.G. Ryan, 1995, 5000 years of pollution in the Rio Tinto Estuary, southwestern Spain. 1995 GSA Annual Meeting Abstracts with Programs, A-86.
Ryan, J.G., Norrell, S., Kepezhinskas, P. and Defant, M.J., 1995,Across_Arc Geochemical Variations in the Kuriles and Kamchatka: slab-dominated vs. crust-influenced geochemical signatures. EOS Supplement 76, F536. 1995 AGU Fall Meeting.
Willse, K.R.and J.G. Ryan, 1996, A comparative geochemical study of meta-mafic rocks of the southern Blue Ridge. 1996 GSA Southeastern Section Meeting Abstracts with Programs, p. 50.
Ryan, J.G., L. Benton, and F. Tera, 1996,Boron abundance and isotopic systematics in forearcs and arcs: the manner of subduction zone material transport.1996 GSA Annual Meeting Abstracts with Programs, p. A_379. Invited Presentation.
Norrell, S., P. Kepezhinskas, M. Defant, J.G. Ryan, K. Collerson, V. Pridhodko, and A. Romashkin, 1996, Tectonic setting, mineralogy and petrology of alkaline rocks from the Russian Far East. EOS Supplement 77, p. F784. 1996 AGU Fall Meeting.
Ryan, J.G, 1997,Chemical Transfer Events in Subduction Zones as a Function of Depth. Presented at the 1997 Goldschmidt Conference, Tuscon, AZ
Emilio, M., Ryan, J.G, and Peterson, V.L. 1998,Study of the Metamorphic Evolution of the Buck Creek Mafic/Ultramafic Complex, NC Presented at the 1998 GSA Southeastern Section Meeting
Abstracts of Research Results from the 1997 REU Summer Program in Western North Carolina, all presented at the 1998 GSA Southeastern Section Meeting
Savov, I.P., Ryan, J.G., and Haydoutov, I, 1998,Petrology and Geochemistry of the Precambrian Balkan-Carpathian Ophiolite, Bulgaria and Serbia. Presented at the 1998 AGU Spring Meeting, Boston, MA
Peterson, V, Emilio, M. and Ryan, J.G., 1998,P-T HISTORY AND STRUCTURAL CONTROLS ON THE BUCK CREEK MAFIC-ULTRAMAFIC COMPLEX, EASTERN BLUE RIDGE, NORTH CAROLINAPresented at the 1998 GSA Annual Meeting, Toronto, Canada.
Robbins, L., Van Cleave, K., and Ryan, J.G., 1999COMPARISON OF CARBONATE TEXTURAL FEATURES IN ALH84001 AND MICROBIALLY INDUCED TEXTURES IN ORTHOPYROXENE Presented at the 30th Lunar and Planetary Science Conference, Houston, TX
Ryan, J.G., V.L. Peterson, and the 1997-1998 REU Program, 1999,Petrogenesis and Significance of the Buck Creek Mafic-Ultramafic Complex, NCInvited Presentation at the 1999 GSA Southeastern Section Meeting, Athens, GA.
Abstracts of Research Results from the 1998 REU Summer Program in Western North Carolina, all presented at the 1999 GSA Southeastern Section Meeting
Tomascek, P.B, J.G. Ryan, and M.J. Defant, 1999,MORB-like Lithium Isotope Ratios in Adakite Lavas from Panama Presented at the 1999 AGU Spring Meeting.
Benton, L.D., I.P. Savov, and J.G. Ryan, 1999,Recycling of Subducted Lithium in Forearcs: Insights From A Serpentine Seamount. Presented at the 1999 AGU Spring Meeting.
Ryan, J.G., 1999,The Implications of Arc Transect Studies for Geochemical Mass-Balance Calculations in Subduction Zones Presented at the 1999 AGU Spring Meeting.
Ryan, J.G., 1999,The trace element systematics of beryllium in geologic environments. Invited presentation at the 1999 GSA Annual Meeting.
Ryan, J.G., 1999,Drawing undergraduates into the laboratory through correlated coursework and research opportunities. Presented at the 1999 GSA Annual Meeting.
Peterson, V.L., and Ryan, J.G., 1999,The Buck Creek REU Program: a successful model for group-based undergraduate research in a field-laboratory setting. Presented at the 1999 GSA Annual Meeting.
Tornabene, L.L., R.H. Stewart, and J.G. Ryan, 1999Characterization and Age of a Probable Tertiary Impact Site near Gamboa, Panama Canal Zone Presented at the 1999 GSA Annual Meeting.
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