Center for Meteorite Studies

Schrader, D. L., Davidson, J., and McCoy, T. J. (2016) Widespread evidence for high-temperature formation of pentlandite in chondrites. Geochimica et Cosmochimica Acta. 189:359-376.

Schmieder, M., Kring, D. A., Swindle, T. D., Bond, J. C. and Moore, C. B. (2016) The Gao-Guenie impact melt breccia—Sampling a rapidly cooled impact melt dike on an H chondrite asteroid? Meteoritics & Planetary Science, 51:1022–1045.

Bajo K., Olinger C. T., Jurewicz A. J. G., Burnett D. S., Sakaguchi I., Suzuki T., Itose S., Ishihara M., Uchino K., Wieler R., and Yurimoto H. (2015) Depth profiling analysis of solar wind helium collected in diamond-like carbon film from Genesis. Geochemical Journal 49(5), 559-566.

Mercer C. M., Young K. E., Weirich J. R., Hodges K. V., Jolliff B. L., Wartho J. A., and van Soest M. C. (2015) Refining Lunar Impact Chronology through High Spatial Resolution 40Ar/39Ar Dating of Impact Melts. Science Advances 1(1), e1400050. 

Mercer C. N., Reed M. H., and Mercer C. M. (2015) Timescales of Porphyry Cu Deposit Formation: Insights from Titanium Diffusion in Quartz. Economic Geology 110(3), 587–602.

Boley, A.C., Morris, M.A., Ford, E.B. (2014) Overcoming the meter barrier and the formation of systems with tightly packed inner planets (STIPs), The Astrophysical Journal Letters 792L, 27B.

Burnett D. S., Jurewicz A.J.G., Woolum D., Wang J., Paque J., Nittler L., McKeegan K., Humayun M., Hervig R., Heber V. S., and Guan Y. (2014), Ion Implants as Matrix-Appropriate Standards for Geochemical Ion Probe Analyses.  Geostandards and Geoanalytical Research 39(3), 265-276.

Chaumard N., Devouard B., Bouvier A., and Wadhwa M. (2014) Metamorphosed calcium-aluminum inclusions in CK carbonaceous chondrites. Meteoritics and Planetary Science 49, 419-452.

Dunham, E., Kosiarek, M., Markatou, E. A., and Wang, A. (2014) Limits of Astrometric and Photo- metric Precision on KBOs. Publications of the Astronomical Society of the Pacific 126, 863-867.

Garvie L.A.J., Nemeth P., and Buseck P.R. (2014) Transformation of graphite to diamond via a topotactic mechanism. American Mineralogist 99, 531-538.

Heber V.S., McKeegan, K.D., Burnett D.S., Duprat J., Guan Y., Jurewicz A.J.G., Olinger C.T., and Smith S.P. (2014)  Accurate analysis of shallowly implanted solar wind ions by SIMS backside depth profiling. Chemical Geology 390, 61–73.

Scully J. E. C., Yin A., Russell C. T., Buczkowski D. L., Williams D. A., Blewett D. T., Ruesch O., Hiesinger H., Le Corre L., Mercer C. M., Yingst R. A., Garry W. B., Jaumann R., Roatsch T., Preusker F., Gaskell R. W., Schröder S. E., Ammannito E., Pieters C. M., Raymond C. A., and the Dawn Science Team (2014) Geomorphology and structural geology of Saturnalia Fossae and adjacent structures in the northern hemisphere of Vesta. Icarus 244, 23-40. 

Németh P., Garvie L.A.J., Aoki T., Dubrovinskaia N., Dubrovinsky L. and Buseck P.R. (2014) Lonsdaleite is faulted and twinned cubic diamond and does not exist as a discrete material. Nature Communications 5, art#5447.

Balta, J. Brian, Matthew Sanborn, Harry Y. McSween, and Wadhwa, M. (2013) Magmatic history and parental melt composition of olivine‐phyric shergottite LAR 06319: Importance of magmatic degassing and olivine antecrysts in Martian magmatism. Meteoritics & Planetary Science 48(8),1359-1382.

Bouvier A., Wadhwa M., Simon S., and Grossman L. (2013) Magnesium isotopic fractionation in chondrules from the Murchison and Murray CM2 carbonaceous chondrites. Meteoritics and Planetary Science 48, 339-353.

Brennecka G. A., Borg L. E. and Wadhwa M. (2013) Evidence of supernova injection into the solar nebula and the decoupling of r-process nucleosynthesis. Proceedings of the National Academy of Sciences 110, 17241-17246.

Brennecka G. A. and Wadhwa M. (2012) Uranium isotope compositions of the basaltic angrite meteorites and the chronological implications for the early Solar System. Proceedings of the National Academy of Sciences 109, 9221-9222.

Morris, M. A., Boley, A. C., Desch, S. J., Athanassiadou, T. (2012) Chondrule Formation in Bow Shocks around Eccentric Planetary Embryos, The Astrophysical Journal 752, 27.

Desch, S. J., Morris, M., A., Connolly Jr., H. C., and Boss, A. P. (2012) The Importance of Experiments: Constraints on Chondrule Formation Models, Meteoritics & Planetary Science 47, 1139.

Janney P. E., Richter F. M., Mendybaev R. A., Wadhwa M., Georg R. B., Watson E. B., and Hines R. R. (2011) Matrix effects in the analysis of Mg and Si isotope ratios in natural and synthetic glasses by laser ablation-multicollector ICPMS: A comparison    of single- and double-focusing mass spectrometers. Chemical Geology 281, 26-40.

Brennecka G. A., Herrmann A. D., Algeo T. J., Anbar A. D. (2011) Rapid expansion of oceanic anoxia immediately before the end-Permian mass extinction. Proceedings of the National Academy of Sciences.

Heber V. S., Wiens R. C., Jurewicz A. J. G., Vogel N., Reisenfeld D. B., Baur H., McKeegan K. D., Wieler R., Burnett D. S. (2011) Isotopic and elemental fractionation of solar wind implanted in the Genesis concentrator target characterized and quantified by noble gases. Meteoritics & Planetary Science.

Brennecka G. A., Wasylenki L. E., Weyer S., Anbar A. D. (2011) Uranium isotope fractionation during adsorption to Mn-oxyhydroxides. Environmental Science and Technology.

Bouvier A., Spivak-Birndorf L., Brennecka G. A., and Wadhwa M. (2011) New constraints on early Solar System chronology from Al-Mg and U-Pb isotope systematics in the unique basaltic achondrite Northwest Africa 2976. Geochimica Cosmochimica Acta 75, 5310-5323.

Janney P. E., Shirey S. B., Carlson R. W., Pearson D. G., Bell D. R., le Roex A. P., Ishikawa A., Nixon P. H., and Boyd F. R. (2010) Age, composition and thermal characteristics of South African off-craton mantle lithosphere: evidence for a multi-stage history. Journal of Petrology.

Minitti M. E. and Hamilton V. E. (2010) A search for basaltic-to-intermediate glasses on Mars: Assessing Martian crustal mineralogy. Icarus.

Brennecka G. A., Borg L. E., Hutcheon I. D., Sharp M. A., Anbar A. D. (2010) Natural Variations in Uranium isotope ratios of Uranium Ore Concentrates: clues to the fractionation mechanism. Earth and Planetary Science Letters.

Brennecka G. A., Weyer S., Wadhwa M., Janney P. E., Zipfel J., and Anbar A. D. (2010) 238U/235U variations in meteorites: Extant 247Cm and implications for Pb-Pb dating. Science 327, 449-451.  

MacPherson G., Bullock E. S., Janney P. E., Kita N., Ushikubo T., Davis A. M., Wadhwa M., and Krot A. N. (2010) Early solar nebula condensates with canonical, not supracanonical, initial 26Al/27Al ratios. Astrophysical Journal Letters 711, L117-L121.  

Usui T., Sanborn M., Wadhwa M., and McSween H. Y., Jr. (2010) Petrology and trace element geochemistry of RBT 04261 and RBT 04262 meteorites, the first examples of geochemically enriched lherzolitic shergottites. Geochimica Cosmochimica Acta 74, 7283-7306.  

Bouvier A. and Wadhwa M. (2010) The age of the Solar System redefined by the oldest Pb-Pb age of a meteoritic inclusion. Nature Geoscience 3, 637-641.


Shearer C. K., Burger P. V., Neal C. R., Sharp Z., Spivak-Birndorf L., Borg L. E.,  Fernandes V. A., Papike J. J., Karner J. M., Wadhwa M., Gaffney A. M., Shafer J., Geissman J., Atudorei N. V., Herd C., Weiss B. P., King P. L., Crowther S. A., and Gilmour J. D. (2009) Non-basaltic asteroidal magmatism during the earliest stages of solar system evolution: A view from Antarctic achondrites Graves Nunatak 06128 and 06129. Geochimica Cosmochimica Acta 74, 1172-1199.  

Spivak-Birndorf L., Wadhwa M., and Janney P. E. (2009) 26Al-26Mg Systematics in D’Orbigny and Sahara 99555 Angrites: Implications for High-Resolution Chronology Using Extinct Chronometers Geochimica Cosmochimica Acta 73, 5202-5211.  

Wadhwa M., Amelin Y., Bogdanovski O., Lugmair G. W., and Janney P. E. (2009) Ancient relative and absolute ages for a basaltic meteorite: Implications for time scales of planetesimal accretion and differentiation. Geochimica Cosmochimica Acta 73, 5189-5201.

Cook D., Clayton R. N., Wadhwa M., Janney P., and Davis A. M. (2008) Nickel isotopic composition of troilite from iron meteorites. Geophysical Research Letters 35, L01203, doi:10.1029/2007GL032431.  

Dauphas N., Cook D., Sacarabany A., Fröhlich C., Davis A. M., Wadhwa M., Pourmand A., Rauscher T., and Gallino R. (2008) Iron-60 evidence for early injection and efficient mixing of stellar debris in the protosolar nebula. Astrophysical Journal 686, 560-569.  

Qin L., Dauphas N., Wadhwa M., Markowski A., Gallino R., Janney P. E., and Bouman C. (2008) Tungsten nuclear anomalies in planetesimal cores. Astrophysical Journal 674, 1234-1241.  

Richter F. M., Watson E. B., Mendybaev R. A., Teng F. Z., Janney P. E. (2008) Magnesium isotope fractionation in silicate melts by chemical and thermal diffusion. Geochimica et Cosmochimica Acta.  

Minitti M. E., Rutherford M. J., Taylor B. E., and Schultz P. H. (2008) Assessment of shock effects on amphibole water content and hydrogen isotope composition: 1. Amphibolite experiments. Earth & Planetary Science Letters.  

Minitti M. E., Leshin L. A., Ahrens T.J., Dyar M. D., Guan Y., and Luo S. (2008) Assessment of shock effects on amphibole water content and hydrogen isotope composition: 2. Kaersutitic amphibole experiments. Earth & Planetary Science Letters.  

Qin L., Dauphas N., Wadhwa M., Masarik J., and Janney P. E. (2008) Rapid accretion and differentiation of iron meteorite parent bodies inferred from 182Hf-182W chronometry and thermal modeling. Earth and Planetary Science Letters 273, 94-104.  

Shearer C. K., Burger P. V., Neal C. R., Sharp Z., Borg L. E., Spivak-Birndorf L., Wadhwa M., Papike J. J., Karner J. M., Gaffney A. M., Shafer J., Weiss B. P., Geissman J., and Fernandes V. A. (2008) A unique glimpse into asteroidal melting processes in the early solar system from the Graves Nunatak 06128/06129 achondrites. American Mineralogist 93, 1937-1940.

Minitti M., Weitz C., Lane M., and Bishop J.  (2007) Morphology, chemistry and spectral properties of Hawaiian rock coatings and implications for Mars. J. Geophys. Res. – Planets.  

Garvie L., Baumgardner G., and Buseck P. (2007) Cross sectional analysis of carbonaceous nanoglobules from the Tagish Lake meteorite by focused ion beam scanning electron microscopy. Meteoritics and Planetary Science.  

Cook D., Wadhwa M., Clayton R. N., Dauphas N., Janney P., and Davis A. M. (2007) Mass-dependent fractionation of nickel isotopes in meteoritic metal. Meteoritics and Planetary Science 42, 2067-2077.  

Dauphas N., van Zuilen M., Busigny V., Lepland A., Wadhwa M., and Janney P. E. (2007) Iron isotope, major and trace element characterization of early Archean supracrustal rocks from SW Greenland: protolith identification and metamorphic overprint. Geochimica Cosmochimica Acta 71, 4745-4770.  

Qin L., Dauphas N., Janney P. E., and Wadhwa M. (2007) Analytical developments for high-precision measurements of W isotopes in iron meteorites. Analytical Chemistry 79, 3148-3154.  

Richter F., Janney P., Mendybaev R., Davis A. M., and Wadhwa M. (2007) Elemental and isotopic fractionation of Type B CAI-like liquids by evaporation. Geochimica Cosmochimica Acta 71, 5544- 5564.  

Teng F.-Z., Wadhwa M., and Helz R. (2007) The absence of magnesium isotope fractionation during basalt differentiation: A case study from Kilauea Iki lava lake, Hawaii, USA. Earth and Planetary Science Letters 261, 84-92.


Beck P., Barrat J. A., Gillet Ph., Wadhwa M., Franchi I., Greenwood R. C., Bohn M., Cotten J., van de Moortele B., and Reynard B. (2006) Petrography and geochemistry of the chassignite Northwest Africa 2737 (NWA 2737), Geochimica Cosmochimica Acta 70, 2127-2139.

Cook D., Wadhwa M., Janney P., Dauphas N., Clayton R. N., and Davis A. M. (2006) High precision measurements of non-mass dependent effects in nickel isotopes in meteoritic metal via multi-collector ICPMS. Analytical Chemistry 78, 8477-8484.

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




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January’s meteorite of the month is Lost City, an (H5) ordinary chondrite that fell in Oklahoma, USA, January 3, 1970, at 8:14 PM.   The many witnesses described the associated …

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