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Conel Alexander
Carnegie Institution for Science

Current Projects

NAI Project Collaborators

Publications

  • Alexander, C. M. O. D., Newsome, S. D., Fogel, M. L., Nittler, L. R., Busemann, H., & Cody, G. D. (2010). Deuterium enrichments in chondritic macromolecular material—Implications for the origin and evolution of organics, water and asteroids. Geochimica et Cosmochimica Acta, 74(15), 4417–4437. doi:10.1016/j.gca.2010.05.005

    See Project See Project See Project

  • Alexander, C. M. O., Bowden, R., Fogel, M. L., Howard, K. T., Herd, C. D. K., & Nittler, L. R. (2012). The Provenances of Asteroids, and Their Contributions to the Volatile Inventories of the Terrestrial Planets. Science, 337(6095), 721–723. doi:10.1126/science.1223474

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  • Boss, A. P., Alexander, C. M. O. D., & Podolak, M. (2012). Cosmochemical consequences of particle trajectories during FU Orionis outbursts by the early Sun. Earth and Planetary Science Letters, 345-348, 18–26. doi:10.1016/j.epsl.2012.06.046

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  • Cody, G. D., Heying, E., Alexander, C. M. O., Nittler, L. R., Kilcoyne, A. L. D., Sandford, S. A., & Stroud, R. M. (2011). Establishing a molecular relationship between chondritic and cometary organic solids. Proceedings of the National Academy of Sciences, 108(48), 19171–19176. doi:10.1073/pnas.1015913108

    See Project See Project See Project

  • De Gregorio, B. T., Stroud, R. M., Nittler, L. R., Alexander, C. M. O. D., Kilcoyne, A. L. D., & Zega, T. J. (2010). Isotopic anomalies in organic nanoglobules from Comet 81P/Wild 2: Comparison to Murchison nanoglobules and isotopic anomalies induced in terrestrial organics by electron irradiation. Geochimica et Cosmochimica Acta, 74(15), 4454–4470. doi:10.1016/j.gca.2010.05.010

    See Project See Project

  • Ebel, D. S., & Alexander, C. M. O. D. (2011). Equilibrium condensation from chondritic porous IDP enriched vapor: Implications for Mercury and enstatite chondrite origins. Planetary and Space Science, 59(15), 1888–1894. doi:10.1016/j.pss.2011.07.017

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  • Herd, C. D. K., Blinova, A., Simkus, D. N., Huang, Y., Tarozo, R., Alexander, C. M. O., … Stroud, R. M. (2011). Origin and Evolution of Prebiotic Organic Matter As Inferred from the Tagish Lake Meteorite. Science, 332(6035), 1304–1307. doi:10.1126/science.1203290

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  • Kebukawa, Y., Alexander, C. M. O. D., & Cody, G. D. (2011). Compositional diversity in insoluble organic matter in type 1, 2 and 3 chondrites as detected by infrared spectroscopy. Geochimica et Cosmochimica Acta, 75(12), 3530–3541. doi:10.1016/j.gca.2011.03.037

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  • Yabuta, H., Alexander, C. M. O. D., Fogel, M. L., Kilcoyne, A. L. D., & Cody, G. D. (2010). A molecular and isotopic study of the macromolecular organic matter of the ungrouped C2 WIS 91600 and its relationship to Tagish Lake and PCA 91008. Meteoritics & Planetary Science, 45(9), 1446–1460. doi:10.1111/j.1945-5100.2010.01117.x

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  • Zega, T. J., Alexander, C. M. O. D., Busemann, H., Nittler, L. R., Hoppe, P., Stroud, R. M., & Young, A. F. (2010). Mineral associations and character of isotopically anomalous organic material in the Tagish Lake carbonaceous chondrite. Geochimica et Cosmochimica Acta, 74(20), 5966–5983. doi:10.1016/j.gca.2010.07.018

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  • Alexander, C.M.O.D., Bowden, R., Fogel, M.L., Howard, K. & Herd, C.D.K.  (2012).  The origin of water in chondrites and volatiles in the terrestrial planet region.  Lunar and Planetary Science, 43: #1929. See Project
  • Alexander, C.M.O.D., Cody, G.D., Bowden, R., Fogel, M.L. & Herd, C.D.K.  (2010).  Parent body modification of the structure, and elemental and isotopic compositions of IOM in Tagish Lake.  Meteoritics and Planetary Science Supplement, 73: Abstract #5367. See Project
  • Alexander, C.M.O.D., Cody, G.D., Fogel, M.L. & Yabuta, H.  (2008).  Organics in meteorites- Solar or interstellar?  Organic Matter in Space, Proceedings of the International Astronomical Union, IAU Symposium, 251: 293-298. See Project
  • Alexander, C.M.O.d.  (2009).  The Central Importance of Chondritic Organic Matter to Understanding the Origin of the Solar System and Maybe even Life.  Meteoritics and Planetary Science Supplement, 72: 5441. See Project
  • Alexander, C.M.O.d., Newsome, S.N., Fogel, M.L. & Cody, G.D.  (2009).  Deuterium Enrichments — Parent Body Products or a Question of Preservation?  Lunar and Planetary Science Conference, 40: Abstract #2546. See Project
  • Boctor, N.Z., Wang, J., Alexander, C.M.O.d., Steele, A. & Armstrong, J.  (2009).  Hydrogen Isotope Signatures and Water Abundances in Nominally Anhydrous Minerals from the Olivine-Phyric Shergottite LAR 06319.  Meteoritics and Planetary Science Supplement, 72: 5176. See Project See Project
  • Boss, A.P., Alexander, C.M.O.D., Podolak, M. & Ebel, D.S.  (2012).  Particle Trajectories During FU Orionis Outbursts by the Protosun [Abstract].  Lunar and Planetary Institute Science Conference. See Project
  • Busemann, H., Alexander, C.M.O.D., Nittler, L.R., Stroud, R.M., Zega, T.J., Cody, G.D., Yabuta, H. & Kilcoyne, A.L.D.  (2008).  Structural, chemical and isotopic examinations of interstellar organic matter extracted from meteorites and interstellar dust particles.  IAU Symposium. See Project
  • Changela, H.G., Stroud, R.M., De Gregorio, B.T., Nittler, L.R. & Alexander, C.M.O.D.  (2011).  Nanoglobule abundances in IOM extracts: correlation with parent body processing.  Meteoritics & Planetary Science (Supp.), Abstract #5504. See Project See Project
  • Cody, G., Heying, E.K., Alexander, C., Nittler, L. & Kilcoyne, D.  (2009).  A link between Interstellar Formaldehyde and Chondritic and Cometary Organic Solids.  AGU Fall Meeting Abstracts, 14: 05. See Project
  • Cody, G.,.D., Ade, H., Alexander, C.M.O.D., Araki, T., Butterworth, A., Fleckenstein, H., Flynn, G., Gilles, M.K., Jacobsen, C., Kilcoyne, A.L.D., Messenger, K., Sandford, S.A., Tyliszczak, T., Westphal, A.J., Wirick, S. & Yabuta, H.  (2008).  Quantitative Organic and Light-Element Analysis of Comet 81P/Wild 2 Particles using C-, N-, and O- µ-XANES.  Meteoritics and Planetary Science, 43: 353-365. See Project
  • Cody, G.D., Alexander, C.M.O.D., Kilcoyne, A.L.D. & Yabuta, H.  (2008).  Unravling the chemical history of the Solar System as recorded in extraterrestrial organic matter.  Organic Matter in Space, Proceedings of the International Astronomical Union, IAU Symposium, 251: 277-284. See Project
  • Cody, G.D., Heying, E. & Alexander, C.M.O.D.  (2009).  A Post Accretionary Origin for Meteoritic and Cometary Organic Solids?  40th Lunar and Plantetary Science Conference. See Project
  • De Gregorio, B.T., Alexander, C., Bassim, N.D., Cody, G.D., Kilcoyne, D., Nittler, L., Stroud, R. & Zega, T.J.  (2009).  Isotopically Anomalous Carbonaceous Nanoglobules in Meteorites and Comets.  AGU Fall Meeting Abstracts, 14: 02. See Project
  • De Gregorio, B.T., Nittler, L.R., Stroud, R.M., Alexander, C.M.O.d., Bassim, N., Cody, G.D., Kilcoyne, A.L.D., Milam, S., Nuevo, M., Sandford, S.A. & Zega, T.J.  (2010).  Isotopic and chemical variation of organic nanoglobules in primitive meteorites.  Lunar and Planetary Science Conference, 41: Abstract #2108. See Project
  • De Gregorio, B.T., Stroud, R.M., Nittler, L.R., Cody, G.D., Alexander, C.M.O.D. & Herd, C.D.K.  (2010).  Isotopic and chemical variations on the nanoscale of distinct lithologies from the Tagish Lake meteorite.  Meteoritics and Planetary Science Supplement, 73: Abstract #5398. See Project
  • Desch, S.J., Krot, A. & Alexander, C.  (2011).  Evidence for Irradiation of the Sun’s Transition Disk.  42nd Lunar and Planetary Science Conference.  Houston, TX. See Project
  • Ebel, D.S., Alexander, C.M.O.D., Hauck, S.A., II, Lawrence, D.J., Nittler, L.R., Peplowski, P.N., Solomon, S.C., Sprague, A.L., Starr, R.D. & Stewart, S.T.  (2011).  MESSENGER: Implications for Mercury formation hypotheses.  Abstracts with Programs, Geological Society of America, 43(5): paper 142-8, p. 358. See Project
  • Ebel, D.S., Alexander, C.M.O.D., Hauck, S.A., Lawrence, D.J., Nittler, L.R., Peplowski, P.N., Solomon, S.C., Sprague, A.L., Starr, R.D. & Stewart, S.T.  (2011).  MESSENGER: Implications for Mercury formation hypotheses.  Abstracts with Programs, 43 (5), paper 142-5, p. 358, Geological Society of America, Boulder, Colo. (CD-ROM). See Project
  • Herd, C.D.K., Nittler, L.R. & Alexander, C.M.O.D.  (2009).  Isotopically Heterogeneous Organic Matter in the Tagish Lake Meteorite.  Lunar and Planetary Science Conference XL, 40: Abstract #1818. See Project
  • Kebukawa, Y., Cody, G.D. & Alexander, C.M.O.D.  (2010).  A New Mechanism for the Formation of Chondritic Insoluble Organic Matter from Interstellar Formaldehyde.  Meteoritical Society Annual Meeting. See Project
  • Kebukawa, Y., Cody, G.D. & Alexander, C.M.O.d.  (2010).  Composition Diversity of Organic Matter in Type 1, 2 and 3 Chondrites by Infrared Spectroscopy.  Lunar and Planetary Institute Science Conference Abstracts. See Project
  • Kebukawa, Y., Cody, G.D., Alexander, C.M.O.D., Nittler, L.R., Herd, C.D.K. & Kilcoyne, A.L.D.  (2011).  Extensive Organic Molecular Evolution in Different Tagish Lake Meteorite Fragments.  42nd Lunar and Planetary Science Conference. See Project
  • Martins, Z., Alexander, C.M.O.D., E.Orzechowska, G., Fogel, M.L. & Ehrenfreund, P.  (2008).  Indigenous amino acids identified in CR primitive meteorites.  MAPS, 52: 2125-2136. See Project See Project
  • Nittler, L.R., Alexander, C.M.O.D., Cody, G.D., De Gregorio, B.T., Kilcoyne, A.L.D., Stroud, R.M. & Tiwari, A.  (2009).  Micro-scale characteristics of insoluble organic matter In chondrites: A coordinated TEM, STXM, and SIMS study.  Lunar and Planetary Science Conference, 40: Abstract #1145. See Project
  • Peeters, Z., Alexander, C.M.O.D., Changela, H., Nittler, L.R., Price, S. & Stroud, R.M.  (2011).  In situ synchrotron X-ray transmission microscopy of CR chondrites QUE 991777 and GRA 95229.  Meteoritics and Planetary Science (Supp.), Abstract #5476. See Project See Project
  • Peeters, Z., Changela, H., Stroud, R.H., Alexander, C.M.O.D. & Nittler, L.R.  (2012).  Organic Carbon Inclusions in CR2 Chondrite Graves Nunataks 95229.  Meteoritics and Planetary Science Supplement, 75: 5283. See Project
  • Stroud, R.M., Alexander, C.M.O.D., Cody, G.D., Gregorio, B.T., Kilcoyne, A.L.D., Nittler, L.R. & Zega, T.J.  (2009).  Correlated microanalysis of carbonaceous nanoglobules.  Meteoritics and Planetary Science Supplement, 72: Abstract #5332. See Project
  • Wang, Y., Kebukawa, Y., Cody, G.D. & Alexander, C.M.O.D.  (2011).  Deuterium Speciation in Chondritic Organic Solids: A relic of Cold Molecular Processes.  42nd Lunar and Planetary Science Conference. See Project
  • Yabuta, H., Cody, G.D. & Alexander, C.M.O.D.  (2009).  Organic Molecular Indicators of Aqueous Alteration: Extensive Pyrolysis Survey of CM, CI, CR, and Tagish Lake Chondrites.  Meteoritics & Planetary Science, Supplement: 5152. See Project
  • Yabuta, H., Cody, G.D. & Alexander, C.M.O.d.  (2009).  Organic Molecular Indicators of Aqueous Alteration: Extensive Pyrolysis Survey of CM, CI, CR, and Tagish Lake Chondrites.  Meteoritics and Planetary Science Supplement, 72: 5152. See Project
  • Yabuta, H., Cody, G.D., Kilcoyne, A.L.D., Araki, T., Alexander, C.M.O.D. & Sandford, S.  (2009).  X-ray absorption near edge spectroscopy analyses of organic matter in comet particles (in Japanese).  Researches in Organic Geochemistry, 23: 147-157. See Project
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Past NAI Teams