Education

Ph.D. University of Hawaii (1994)

Research Interests

My research is focused on using meteorites as a tool to understand the origin and evolution of their parent bodies, namely asteroids and Mars. My major focus has been understanding the detailed melting and differentiation of asteroids in the early history of the Solar System to ultimately unravel the origin of differentiated worlds like Earth. I both examine the mineralogy, chemistry and texture of meteorites (petrology) and reproduce these textures and compositions during high-temperature crystallization experiments. My work is highly collaborative with colleagues using age dating, oxygen isotopic analyses, noble gases and a wide range of other techniques to gain a comprehensive overview of the problem.

Publications:

McCoy T.J. and Keil K. (1988) Ingella Station, a new chondrite find from the Tenham strewnfield, Queensland, Australia. Meteoritics 23, 381.

McCoy T.J., Casanova I., Keil K. and Wieler R. (1990) Classification of four ordinary chondrites from Spain. Meteoritics 25, 77-79.

McCoy T.J. and Keil K. (1990) Lake Machattie, a weathered H5 chondrite find from Queensland, Australia. Meteoritics 25, 144.

Pun A., McCoy T.J., Keil K. and Wilson I.E. (1990) Classification of five new chondrite finds from Roosevelt County, New Mexico. Meteoritics 25, 233-234.

McCoy T.J., Pun A. and Keil K. (1991) Spinel-bearing, Al-rich chondrules in two chondrite finds from Roosevelt County, New Mexico: Indicators of nebular and parent body processes. Meteoritics 26, 301-309.

McCoy T.J., Scott E.R.D., Jones R.H., Keil K. and Taylor G.J. (1991) Composition of chondrule silicates in LL3-5 chondrites and implications for their nebular history and parent body metamorphism. Geochim. Cosmochim. Acta 55, 601-619.

McCoy T.J., Taylor G.J. and Keil K. (1992) Zagami: Product of a two-stage magmatic history. Geochim. Cosmochim. Acta 56, 3571-3582. Mouginis-Mark P.J., McCoy T.J., Taylor G.J. and Keil K. (1992) Martian parent craters for the SNC meteorites. J. Geophys. Res. - Planets. 97, 10213-10225.

Taylor G.J., Keil K., McCoy T., Haack H. and Scott E.R.D. (1993) Asteroid differentiation: Pyroclastic volcanism to magma oceans. Meteoritics 28, 34-52.

McCoy T.J., Keil K., Scott E.R.D. and Haack H. (1993) Genesis of the IIICD iron meteorites: Evidence from silicate-bearing inclusions. Meteoritics 28, 552-560. (75%)

McCoy T.J., Keil K., Ash R.D., Morse A.D., Pillnger C.T., Wieler R., Mayeda T.K., Clayton R.N., Benoit P.H., Sears D.W.G., Casanova I., Muenow D.W., Moore C.B., Lewis C.F. and Wilson I.E. (1993) Roosevelt County 075: A petrologic, chemical and isotopic study of the most unequilibrated known H chondrite. Meteoritics 28, 681-691.

McCoy T.J., Keil K. and Wilson I.E. (1993) Classification of five new ordinary chondrites (RC 073,074,076-078) from Roosevelt County, New Mexico. Meteoritics 28, 120-121.

McCoy T.J., Steele I.M., Keil K., Leonard B.F. and Endreb M. (1994) Chladniite, Na2CaMg7(PO4)6: A new mineral from the Carlton (IIICD) iron meteorite. Amer. Min. 79, 375-380.

Ehlmann A.J., McCoy T.J. and Keil K. (1994) The Tatum, New Mexico, chondrite and its silica inclusion. Chemie der Erde 54, 169-178.

McCoy T.J., Keil K., Bogard D.D., Garrison D.H., Casanova I., Lindstrom M.M., Brearley A.J., Kehm K., Nichols R.H. Jr. and Hohenberg C.M. (1995) Origin and history of impact-melt rocks of enstatite chondrite parentage. Geochim. Cosmochim. Acta 59, 161-175.

Marti K., Kim J.S., Thakur A.N., McCoy T.J. and Keil K. (1995) Signatures of the Martian atmosphere in glass of the Zagami meteorite. Science 267, 1981-1984.

Muenow D.W., Keil K. and McCoy T.J. (1995) Volatiles in unequilibrated ordinary chondrites: Abundances, sources, and implications for explosive volcanism on differentiated asteroids. Meteoritics 30, 639-645.

McCoy T.J., Ehlmann A.J. and Keil K. (1995) The Travis County, Texas, meteorites. Meteoritics 30, 348-351.

McCoy T.J., Ehlmann A.J. and Keil K. (1995) The Fayette County, Texas, meteorites. Meteoritics 30, 776-780.

Benedix G.K., Kinsey L.K., McCoy T.J., Keil K. and Wieler R. (1995) The Roosevelt County 079-090 meteorites. Meteoritics 30, 788-791.

Scott E.R.D., Haack H. and McCoy T.J. (1996) Core crystallization and silicate-metal mixing in the parent body of the IVA iron and stony-iron meteorites. Geochim. Cosmochim. Acta 60, 1615-1631.

Haack H., Scott E.R.D., Love S.G., Brearley A.J. and McCoy T.J. (1996) Thermal histories of IVA stony-iron and iron meteorites: Evidence for asteroid fragmentation and reaccretion. Geochim. Cosmochim. Acta 60, 3103-3113.

McCoy T.J., Keil K., Clayton R.N., Mayeda T.K., Bogard D.D., Garrison D.H., Huss G.R., Hutcheon I.D. and Wieler R. (1996) A petrologic, chemical and isotopic study of Monument Draw and comparison with other acapulcoites: Evidence for formation by incipient partial melting. Geochim. Cosmochim. Acta 60, 2681-2708.

McCoy T.J., Ehlmann A.J., Benedix G.K., Keil K. and Wasson J.T. (1996) The Lueders, Texas, IAB iron with silicate inclusions. Meteoritics and Planetary Science 31, 419-422.

McCoy T.J., Keil K., Clayton R.N., Mayeda T.K., Bogard D.D., Garrison D.H. and Wieler R. (1997) A petrologic and isotopic study of lodranites: Evidence for early formation as partial melt residues from heterogeneous precursors. Geochim. Cosmochim. Acta 61, 623-637.

McCoy T.J., Keil K., Muenow D.W. and Wilson L. (1997) Partial melting and melt migration in the acapulcoite-lodranite parent body. Geochim. Cosmochim. Acta 61, 639-650.

McCoy T.J., Ehlmann A.J. and Moore C.B. (1997) The Leedey, Oklahoma, chondrite: Fall, petrology, chemistry and an unusual Fe,Ni-FeS inclusion. Meteoritics and Planetary Science 32, 19-24.

Dickinson T.L. and McCoy T.J. (1997) Experimental REE partitioning in oldhamite: Implications for the igneous origin of aubritic oldhamite. Meteoritics and Planetary Science 32, 395-412.

McCoy T.J. and Ehlmann A.J. (1997) Monnig collection meteorites from Forestburg, Davy, Harrison Township and Gurram Konda. Meteoritics and Planetary Science 32, A167-A170.

McCoy T.J. (1998) A pyroxene-oldhamite clast in Bustee: Igneous aubritic oldhamite and a mechanism for the Ti enrichment in aubritic troilite. Antarctic Meteorite Research 11, 34-50.

Benedix G.K., McCoy T.J., Keil K., Bogard D.D. and Garrison D.H. (1998) A petrologic and isotopic study of winonaites: Evidence for early partial melting, brecciation, and metamorphism. Geochim. Cosmochim. Acta 62, 2535-2553.

Russell S.S., McCoy T.J., Jarosewich E. and Ash R.D. (1998) The Burnwell, Kentucky, low-FeO chondrite fall: Description, classification and origin. Meteoritics and Planetary Science 33, 853-856.

Mittlefehldt D.W., McCoy T.J., Goodrich C.A. and Kracher A. (1998) Non-chondritic meteorites from asteroidal bodies. In Planetary Materials (J.J. Papike, ed.), Reviews in Mineralogy, Vol. 36, 4-1-195.

McCoy T.J., Wadhwa M. and Keil K. (1999) New lithologies in the Zagami meteorite: Evidence for fractional crystallization of a single magma unit on Mars. Geochim. Cosmochim. Acta 63, 1249-1262.

McCoy T.J., Dickinson T.L. and Lofgren G.E. (1999) Partial melting of the Indarch (EH4) meteorite: A textural, chemical and phase relations view of melting and melt migration. Meteoritics and Planetary Science 34, 735-746.

McCoy T.J. and Lofgren G.E. (1999) Crystallization of the Zagami shergottite: An experimental study. Earth Planet. Sci. Lett. 173, 397-411.

Bogard D.D., Garrison D.H. and McCoy T.J. (2000) Chronology and petrology of silicates from IIE iron meteorites: Evidence of a complex parent body evolution. Geochim. Cosmochim. Acta 64, 2133-2154.

Trombka J.I., Squyres S.W., Brückner J., Boynton W.V., Reedy R.C., McCoy T.J., Gorenstein P., Evans L.G., Arnold J.R., Starr R.D., Nittler L.R., Murphy M.E., Mikheeva I., McNutt R.L. Jr., McClanahan T.P., McCartney E., Goldsten J.O, Gold R.E., Floyd S.R., Clark P.E., Burbine T.H., Bhangoo J.S., Bailey S.H. and Petaev M. (2000) The elemental composition of asteroid 433 Eros: Results of the NEAR-Shoemaker X-ray spectrometer. Science 289, 2101-2105.

McCoy T.J., Nittler L.R., Burbine T.H., Trombka J.I., Clark P.E. and Murphy M.E. (2000) Anatomy of a partially-differentiated asteroid: A "NEAR"-sighted view of acapulcoites and lodranites. Icarus 148, 29-36.

Benedix G.K., McCoy T.J., Keil K. and Love S.G. (2000) A petrologic study of the IAB iron meteorites: Constraints on the formation of the IAB-winonaite parent body. Meteoritics and Planetary Science 35, 1127-1141.

Burbine T.H., Buchanan P.C., Binzel R.P., Bus S.J., Hiroi T., Hinrichs J.L., Meibom A. and McCoy T.J. (2001) Vesta, Vestoids and HEDs: Relationships and the origin of spectral differences. Meteoritics and Planetary Science 36, 761-781.

McCoy T.J., Burbine T.H., McFadden L.A., Starr R.D., Gaffey M.J., Nittler L.R., Evans L.G., Izenberg N., Lucey P., Trombka J.I., Bell J.F. III, Clark B.E., Clark P.E., Squyres S.W., Chapman C.R., Boynton W.V. and Veverka J. (2001) The composition of 433 Eros: A mineralogical-chemical synthesis. Meteoritics and Planetary Science 36, 1661-1672.

Nittler L.R., Starr R.D., Lim L., McCoy T.J., Burbine T.H., Reedy R.C., Trombka J.I., Gorenstein P., Squyres S.W., Boynton W.V., McClanahan T.P., Bhangoo J.S., Clark P.E., Murphy M.E. and Killen R. (2001) X-ray fluorescence measurements of the surface elemental composition of asteroid 433 Eros. Meteoritics and Planetary Science 36, 1673-1695.

Evans L.G., Starr R.D., Brückner J., Reedy R.C., Boynton W.V., Trombka J.I., Goldsten J.O., Masarik J., Nittler L.R. and McCoy T.J. (2001) Elemental composition from gamma-ray spectroscopy of the NEAR-Shoemaker landing site on 433 Eros. Meteoritics and Planetary Science 36, 1639-1660.

Trombka J.I., Nittler L.R., Starr R.D., Evans L.G., McCoy T.J., Boynton W.V., Burbine T.H., Brückner J., Gorenstein P., Squyres S.W., Reedy R.C., Goldsten J.O., Lim L., Hurley K., Clark P.E., Floyd S.R., McClanahan T.P., McCartney E., Branscomb J., Bhangoo J.S., Mikheeva I. and Murphy M.E. (2001) The NEAR-Shoemaker XGRS experiment: Overview and lessons learned. Meteoritics and Planetary Science 36, 1605-1616.

Wilkison S.L., Robinson M.S., Thomas P.C., Veverka J., McCoy T.J., Murchie S.L., Prockter L. and Yeomans D. (2002) An estimate of Eros’s porosity and implications for internal structure. Icarus 155, 94-103.

McCoy T.J., Robinson M.S., Nittler L.R. and Burbine T.H. (2002) The Near Earth Asteroid Rendezvous mission to asteroid 433 Eros: A milestone in the study of asteroids and their relationship to meteorites. Chemie der Erde 62, 89-121.

Burbine T.H., McCoy T.J., Nittler L.R., Benedix G.K., Cloutis E.A. and Dickinson T.L. (2002) Spectra of extremely reduced assemblages: Implications for Mercury. Meteoritics and Planetary Science 37, 1233-1244.

Burbine T.H., McCoy T.J., Meibom A., Gladman B. and Keil K. (2002) Meteoritic parent bodies: Their number and identification. In Asteroids III (W.F. Bottke Jr., A. Cellino, P. Paolicchi and R.P. Binzel, eds.), Univ. of Arizona Press, 653-667.

Lorenzetti S., Eugster O. Busemann H., Marti K., Burbine T.H. and McCoy T.J. (2003) History and origin of aubrites. Geochim. Cosmochim. Acta 67, 557-571.

Burbine T.H., McCoy T.J., Jarosewich E. and Sunshine J.M. (2003) Deriving asteroid mineralogies from reflectance spectra: Implications for the MUSES-C target asteroid. Antarctic Meteorite Research 16, 185-195.

Trombka J.I., McCoy T.J., Starr R.D., Schweitzer J., Eisen Y., Evans L.G., Hoover R., Floyd S., Lim L., Groves J. and James R.B. (2003) The use of neutron/gamma-ray techniques for astrobiological and geochemical exploration of planetary bodies. Proceedings of the 2003 IEEE Aerospace Conference, 2-581 – 2-595.

Wilkison S.L., McCoy T.J., McCamant J.E., Robinson M.S., and Britt D. (2003) Porosity and density of ordinary chondrites: Clues to the formation of friable and porous ordinary chondrites. Meteoritics and Planetary Science 38, 1533-1546.

Haack H. and McCoy T.J. (2003) Iron and stony-iron meteorites, pp. 325-345. In Meteorites, Comets and Planets (ed. A.M. Davis) Vol. 1 Treatise on Geochemistry (eds. H.D. Holland and K.K. Turekian), Elsevier-Pergamon, Oxford.

Wang P.-L., Rubmle D. III and McCoy T.J. (2004) Oxygen isotopic compositions of IVA iron meteorites: Implications for the thermal evolution derived from in situ UV laser microprobe analyses. Geochim. Cosmochim. Acta 68, 1159-1171.

Sunshine J.M., Bus S.J., McCoy T.J., Burbine T.H., Corrigan C.M. and Binzel R.P. (2004) High-calcium pyroxene as an indicator of igneous differentiation in asteroids and meteorites. Meteoritics and Planetary Science 39, 1343-1357.

Nittler L.R., McCoy T.J., Clark P.E., Murphy M.E., Trombka J.I. and Jarosewich E. (2004) Bulk element compositions of meteorites: A guide for interpreting remote-sensing geochemical measurements of planets and asteroids. Antarctic Meteorite Research 17, 233-253.

Benedix G.K., Lauretta D.S. and McCoy T.J. (2005) Thermodynamic constraints on the formation conditions of winonaites and silicate-bearing IAB irons. Geochim. Cosmochim. Acta 69, 5129-5138.

Meibom A., Righter K., Chabot N. Dehn G., Antignano A.A., McCoy T.J., Krot A.N., Zolensky M.E., Petaev M.I. and Keil K. (2005) Shock melts in QUE 94411, Hammadah al Hamra 237 and Bencubbin: Remains of the missing matrix. Meteoritics and Planetary Science 40, 1377-1391.

Akkurt H., Groves J.L., Trombka J., Starr R., Evans L., Floyd S., Hoover R., Lim L., McClanahan T., James R., McCoy T. and Schweitzer J. (2005) Pulsed neutron generator system for astrobiological and geochemical exploration of planetary bodies. Nuclear Instruments and Methods in Physics Research B241, 232-237.

Trombka J.I., Starr R.D., Groves J., Akkurt H., Evans L.G., McCoy T.J., Parsons A.M., Schweitzer J., Amatucci E., Smith M.T., Floyd S. and McClanahan T.P. (2005) A pulsed neutron gamma-ray system for Mars rover missions. 2005 IEEE Aerospace Conference 05-12, 1 - 10.

McCoy T.J., Carlson W.D., Nittler L.R., Stroud R.M., Bogard D.D. and Garrison D.H. (2006) Graves Nunatak 95209: A snapshot of metal segregation and core formation. Geochim. Cosmochim. Acta 70, 516-531.

McCoy T.J., Ketcham R.A., Wilson L., Benedix G.K., Wadhwa M. and Davis A.M. (2006) Formation of vesicles in asteroidal basaltic meteorites. Earth Planet. Sci. Lett. 246, 102-108.

Rosenshein E.B., Ivanova M.A., Dickinson T.L., McCoy T.J., Lauretta D.S., Guan Y., Leshin L.A. and Benedix G.K. (2006) Oxide-bearing and FeO-rich clasts in aubrites. Meteoritics and Planetary Science 41, 495-503.

Clarke R.S. Jr., Plotkin H. and McCoy T.J. (2006) Meteorites and the Smithsonian Institution. In The History of Meteoritics and Key Meteorite Collections: Fireballs, Fall and Finds (eds. G.J.H. McCall, A.J. Bowden and R.J. Howarth) Geological Society, London, Special Publications 256, 237-265.

McCoy T.J., Mittlefehldt D.W. and Wilson L. (2006) Asteroid differentiation. In Meteorites and the Early Solar System II (D. Lauretta and H.Y. McSween, Jr., eds.). Univ. of Arizona Press, 733-745.

Weisberg M.K., McCoy T.J. and Krot A.N. (2006) Systematics and evaluation of meteorite classification. In Meteorites and the Early Solar System II (D. Lauretta and H.Y. McSween, Jr., eds.). Univ. of Arizona Press, 19-52.

Burbine T.H., McCoy T.J., Hinrichs J.L. and Lucey P.G. (2006) Spectral properties of angrites. Meteoritics and Planetary Science 41, 1139-1145.

Cloutis E.A., Binzel R.P., Burbine T.H., Gaffey M.J. and McCoy T.J. (2006) Asteroid 3628 Boznemcova: Covered with angrite-like basalts? Meteoritics and Planetary Science 41, 1147-1161.

Foley C.N., Nittler L.R., McCoy T.J., Lim L., Brown M.R.M., Starr R.D. and Trombka J.I. (2006) Minor element evidence that Asteroid 433 Eros is a space-weathered ordinary chondrite parent body. Icarus 184, 338-343.

McSween H.Y., Ruff S.W., Morris R.V., Bell J.F. III, Herkenhoff K., Gellert R., Stockstill K.R., Tornabene L.L., Squyres S.W., Crisp J.A., Christensen P.R., McCoy T.J., Mittlefehldt D.W. and Schmidt M. (2006) Alkaline volcanic rocks from the Columbia Hills, Gusev Crater, Mars. J. Geophys. Res. 111, E09S91.

Yen A.S., Mittlefehldt D.W., McLennan S.M.,Gellert R., Bell J.F. III, McSween H.Y., Ming D.W., McCoy T.J., Morris R.V., M. Golombek, T. Economou, Madsen M.B., Wdowiak T., Clark B.C., Jolliff B.L., Schröder C., Brückner J., Zipfel J. and Squyres S.W. (2006) Nickel on Mars: Constraints on meteoritic material at the surface. J. Geophys. Res. 111, E12S11.

Morris R.V., Klingelhöfer G., Schröder C., Rodionov D.S., Yen A., Ming D.W., deSouza P.A. Jr., Wdowiak T., Fleischer I., Gellert R., Bernhardt B., Bonnes U., Cohen B.A., Evlanov E.N., Foh J., Gütlich P., Kankeleit E., McCoy T., Mittlefehldt D.W., Renz F., Schmidt M.E., Zubkov B., Squyres S.W. and Arvidson R.E. (2006) Mössbauer mineralogy of rock, soil, and dust at Meridiani Planum, Mars: Opportunity’s journey across sulfate-rich outcrop, basaltic sand and dust, and hematite lag deposits. J. Geophys. Res. 111, E12S15.

Welzenbach L.C., McCoy T.J., Righter K. and Satterwhite C.E. (2006) Standards for the U.S. Antarctic meteorite program collection: Preserving outer space in museum space. Collection Forum 21, 33-41.

Sunshine J.M., Bus S.J., Corrigan C.M., McCoy T.J. and Burbine T.H. (2007) Olivine dominated asteroids and meteorites: Distinguishing nebular and igneous histories. Meteoritics and Planetary Science 42, 155-170.