Publications

N. Tomioka1*, K. Fujino1, E. Ito2, T. Katsura2, T. Sharp3, T. Kato4 (2001) Microstructures and structural phase transition in (Mg,Fe)SiO3 majorite. European Journal of Mineralogy, In Press

Kontny, A., de Wall, H., Sharp, T.G. and Pósfai, M., (2000) Mineralogy and magnetic properties of natural pyrrhotite from a 260°C section at the KTB Drilling Site, Germany, American Mineralogist 85, 1416-1427.

Pósfai, M., Sharp, T.G. and Kontny, A., (2000) Pyrrhotite varieties from the 9.1 km deep borehole of the KTB project. American Mineralogist 85, 1406-1415.

Kerschhofer, L., Rubie, D.C., Sharp, T. G., McConnell, J. D. C. and Dupas-Bruzek, C. (2000) Mechanisms and kinetics of intracrystalline olivine to ringwoodite transformation, Physics of Earth and Planetary Interiors 121, 59-76.

El Goresy, A., Dubrovinsky, L., Sharp, T.G. Saxena, S., and Chen,. (2000) A new monoclinic post-stishovite polymorph of silica in the SNC meteorite Shergotty. Science 288, 1632-1634.

Sharp, T.G., El Goresy, A., Wopenka, B. and Chen, M. (1999) A post-stishovite SiO2 polymorph in the meteorite Shergotty: Implications for impact events and the Earth's lower mantle. Science 284 1511-1513.

Dupas, C., Sharp, T.G., Rubie, D.C., Durham, W.B. (1998) Transformation and deformation mechanisms in (Mg,Fe)2SiO4 olivine and B-phase under non-hydrostatic stress and subduction zone conditions. Physics of the Earth and Planetary Interiors 108, 33-48.

Kerschhofer, L., Dupas, C., Liu, M., Sharp, T.G., Durham, W.B. and Rubie, D.C. (1998) Polymorphic transformations between olivine, wadsleyite and ringwoodite: mechanisms of intracrystalline nucleation and the role of elastic strain. Mineralogical Magazine 62, 617-638.

Kerschhofer, L., Liu, M., Rubie, D.C., McConnell, J.D.C., Sharp, T.G. and Dupas, C. (1998) Intracrystalline olivine-ringwoodite transformation and time-dependent growth rates. Reviews in High Pressure Science and Technology 7, 28-33.

Voegelé, V., Cordier, P., Sautter, V., Sharp, T.G., Lardeaux, J.M. and Marques F. O. (1998) Plastic deformation of silicate garnets. II Deformation microstructures in natural samples. Physics of the Earth and Planetary Interiors 108,319-338.

Cordier, P. and Sharp, T.G. (1998) Large angle convergent beam electron diffraction determinations of dislocation Burgers vectors in synthetic stishovite. Physics and Chemistry of Minerals 25, 548-555.

Meissner, E., Sharp, T.G. and Chakraborty, S. (1998) Quantitative measurement of short compositional profiles using analytical transmission electron microscopy (ATEM). American Mineralogist 83, 546-552.

van Aken, P.A. Sharp T.G. and Seifert, F. (1998) Electron-beam induced amorphization of stishovite: Silicon-coordination change observed using Si K-Edge extended electron energy-loss fine structure. Physics and Chemistry of Minerals 25, 83-93.

Klein, U., Sharp, T.G. and Schumacher, J.C. (1997) Analytical electron microscopy of nm-scale hornblende lamellae: Low-temperature exsolution in cummingtonite. American Mineralogist 82, 1079-1090.

Hacker, B.R., Sharp T.G., Zhang, R.Y., Liou, J.G. and Hervig, R.L (1997) Low-Ti olivines and dynamical diffraction contradict a transition-zone origin for ultrahigh-pressure lherzolites. Science 278, 702-704.

Heinemann, S., Sharp, T.G., Seifert, F. and Rubie D.C. (1997) The cubic-tetragonal phase transition in the system majorite (Mg4Si4O12) - pyrope (Mg3Al2Si3O12), and garnet symmetry in the Earth's transition zone. Physics and Chemistry of Minerals 24, 206-221.

Poe, B., Seifert, F., Sharp, T.G. and Wu, Z. (1997) ELNES spectroscopy of mixed Si coordination minerals. Physics and Chemistry of Minerals 24, 477-487.

Sharp, T.G., Lingemann, C.M., Dupas, C. and Stöffler, D. (1997) Natural occurrence of MgSiO3-ilmenite and amorphized MgSiO3-perovskite in a shocked L chondrite. Science 277, 352-355.

Hugh-Jones, D., Sharp, T., Angel, R. and Woodland, A. (1996) The transition of orthoferrosilite to high-pressure C2/c clinoferrosilite at ambient temperature. European Journal of Mineralogy 8, 1337-1345.

Ganguly, J., Chakraborty, S., Sharp, T.G. and Rumble, D. III (1996) Constraint on the time scale of biotite grade metamorphism during the Acadian Orogeny from a natural garnet-garnet diffusion couple. American Mineralogist 81, 1208-1216.

Kerschhofer, L., Sharp, T.G. and Rubie D.C. (1996) Intracrystalline transformation of olivine to wadsleyite and ringwoodite under subduction zone conditions. Science 274, 79-81.

Chen, M., Sharp, T.G., El Goresy, A., Wopenka, B. and Xie, X. (1996) The high-pressure assemblage majorite-pyrope solid solution + magnesiowüstite: A new constraint on the high pressure and temperature history of shock veins in chondrites. Science 271, 1570-1573.

Romano, C., Mungall, J.E., Sharp, T., Dingwell, D.B. and Bagdassarov, N. (1996) Tensile strengths of vesicular glasses: An experimental study. American Mineralogist 81, 1148-1154.

Stevenson, R.J., Dingwell, D.B., Webb, S. and Sharp, T.G. (1996) Viscosity of microlite-bearing rhyolite obsidians: an experimental study. Bulletin of Volcanology 58, 298-309.

Sharp, T.G., Stevenson, R.J. and Dingwell, D.B. (1996) Microlites and "nanolites" in rhyolitic glass: Microstructural and chemical characterization. Bulletin of Volcanology 57, 631-640.

Wu, Z., Seifert, F., Poe, B. and Sharp, T. (1996) Multiple scattering calculations for SiO2 polymorphs: Comparison to ELNES and XANES spectra. Journal of Physics: Condensed Matter 8, 1-14.

Sharp, T.G., Wu, Z., Seifert, F., Poe, B., Doerr, M. and Paris, E. (1996) Distinction between six- and four-fold coordinated silicon in SiO2 polymorphs via electron energy loss near edge structure (ELNES) spectroscopy. Physics and Chemistry of Minerals 23, 17-24.

McCammon, C.A., Pring, A., Keppler, H., Sharp, T.G. and Seifert, F. (1995) A study of bernalite, Fe(OH)3 , using Mössbauer spectroscopy, optical spectroscopy and transmission electron microscopy. Physics and Chemistry of Minerals 22, 11-20.

Sharp, T.G. and Rubie, D.C. (1995) Catalysis of the olivine to spinel transformation by high-clinoenstatite. Science 269, 1095-1098.

Sharp, T.G., Bussod, G.Y. and Katsura, T. (1994) Microstructures in B-Mg1.8Fe0.2SiO4 experimentally deformed at transition zone conditions. Physics of the Earth and Planetary Interiors 86, 69-83.

Hogrefe, A., Rubie, D.C., Sharp, T.G. and Seifert, F. (1994) Metastability of enstatite in deep subducting lithosphere. Nature 372, 351-353.

Sharp, T.G., Oden, P.I. and Buseck, P.R. (1993) Lattice-scale imaging of mica and clay (001) surfaces by atomic force microscopy using net attractive forces. Surface Science Letters 284/1-2, L405-L410.

Sharp, T.G. and Buseck, P.R. (1993) The distribution of Ag and Sb in galena: Inclusions, defects, and solid solution. American Mineralogist 78, 85-95.

Sharp, T.G., Zheng, N.J., Tsong, I.S.T. and Buseck, P.R. (1990) Scanning tunneling microscopy of defects in Ag- and Sb-bearing galena. American Mineralogist Letters 75, 1438-1442.

Sharp, T.G., Otten, M.T. and Buseck, P.R. (1990) Serpentinization of phlogopite phenocrysts from a micaceous kimberlite. Contributions to Mineralogy and Petrology 104, 530-539.

Sharp, T.G. and Buseck, P.R. (1988) Prograde versus retrograde intergrowths in a calc-silicate rock. American Mineralogist 73, 1292-1301.


Page last modified 1/7/2002