MINERALOGY, PETROGRAPHY, AND OXYGEN ISOTOPIC COMPOSITIONS OF ULTRAREFRACTORY INCLUSIONS FROM CARBONACEOUS CHONDRITES
A.N. Krot, C. Ma, K. Nagashima, A.M. Davis, J.R. Beckett, S.B. Simon, M. Komatsu, T.J. Fagan, F. Brenker, M.A. Ivanova, A.Bischoff Geochemistry Available online 15 August 2019 LINK “We report on the mineralogy, petrography, and…
MINERALOGY, PETROGRAPHY, AND OXYGEN AND ALUMINUM-MAGNESIUM ISOTOPE SYSTEMATICS OF GROSSITE-BEARING REFRACTORY INCLUSIONS
Alexander N. Krot, Kazuhide Nagashima, Steven B. Simon, Chi Ma, Harold C. Connolly Jr., Gary R. Huss, Andrew M. Davis, Martin Bizzarro Geochemistry Available online 15 August 2019 LINK “Grossite (CaAl4O7) is one of the…
Extended chondrule formation intervals in distinct physicochemical environments: Evidence from Al-Mg isotope systematics of CR chondrite chondrules with unaltered plagioclase
Travis J. Tenner, Daisuke Nakashima, Takayuki Ushikubo, Naotaka Tomioka, Makoto Kimura, Michael K. Weisberg, Noriko T.Kita Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 22 June 2019 LINK “Al-Mg isotope systematics of twelve…
Lewis Cliff 86211 and 86498: Metal-Sulfide Liquid Segregates from a Carbonaceous Chondrite Impact Melt
Nicole G. Lunning, Timothy J. Mccoy, Devin L. Schrader, Kazu Nagashima, … Alfred Kracher Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 5 June 2019 LINK “The petrogenesis of the ungrouped iron meteorite…
3-μm reflectance spectroscopy of carbonaceous chondrites under asteroid-like conditions
Driss Takir, Karen R. Stockstill-Cahill, Charles A. Hibbitts, Yusuke Nakauchi Icarus In Press, Accepted Manuscript, Available online 20 May 2019 LINK “Highlights • We present the most comprehensive 3-μm dataset of carbonaceous chondrites ever acquired…
3-micron Reflectance Spectroscopy of Carbonaceous Chondrites under Asteroid-like ConditionsOPEN ACCESS
Driss Takir, Karen R. Stockstill-Cahill, Charles A. Hibbitts, Yusuke Nakauchi PDF (OPEN ACCESS) “We measured 3-μm reflectance spectraof 21 meteorites that represent all carbonaceous chondrite types available in terrestrial meteorite collections. The measurements were conducted…
A cometary building block in a primitive asteroidal meteorite
Larry R. Nittler, Rhonda M. Stroud, Josep M. Trigo-Rodríguez, Bradley T. De Gregorio, Conel M. O’D. Alexander, Jemma Davidson, Carles E. Moyano-Cambero & Safoura Tanbakouei Nature Astronomy (2019) Published: 15 April 2019 LINK “Meteorites originating…
Quantitative models for the elemental and isotopic fractionations in chondrites: The carbonaceous chondrites
Conel M. O’D. Alexander Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 16 February 2019 LINK “A quantitative understanding of the elemental and isotopic fractionations recorded in the compositions of the chondritic meteorites…
Aqueous Alteration of Enstatite Chondrite Material in the Kaidun Meteorite
K. Higashi, T. Mikouchi, M. E. Zolensky 50th Lunar and Planetary Science Conference (2019), Abstract #2344 PDF abstract
Oxygen and Hydrogen Isotopic Evidence for the Existence of Several C1 Parent Bodies in the Early Solar System
M. Patzek, A. Bischoff, P. Hoppe, A. Pack, R. Visser, T. John 50th Lunar and Planetary Science Conference (2019), Abstract #1779 PDF abstract
Siderophile Element Constraints on the Thermal History of the H Chondrite Parent body
G.J. Archer, R.J. Walker, J. Tino, T. Blackburn, T.S.Kruijer, J.L. Hellmann Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 20 November 2018 LINK “The abundances of highly siderophile elements (HSE: Re, Os, Ir,…
Molecular distribution, 13C‐isotope, and enantiomeric compositions of carbonaceous chondrite monocarboxylic acids
José C. Aponte, Hannah K. Woodward, Neyda M. Abreu, Jamie E. Elsila, Jason P. Dworkin Meteoritics & Planetary Science First Published: 12 November 2018 LINK “The water‐soluble organic compounds in carbonaceous chondrite meteorites constitute a…
Spectral Characterization of Analog Samples in Anticipation of OSIRIS-REx’s Arrival at Bennu: A Blind Test Study
K.L. Donaldson Hanna, D.L. Schrader, E.A. Cloutis, G.D. Cody, A.J. King, T.J. McCoy, D.M. Applin, J.P. Mann, N.E. Bowles, J.R. Brucato, H.C. Connolly Jr., E. Dotto, L.P. Keller, L.F. Lim, B.E. Clark, V.E. Hamilton, C….
Carbonaceous Achondrites Northwest Africa 6704/6693: Milestones for Early Solar System Chronology and Genealogy
Matthew E. Sanborn, Josh Wimpenny, Curtis D. Williams, Akane Yamakawa, Yuri Amelin, Anthony J.Irving, Qing-Zhu Yin Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 14 October 2018 LINK “Northwest Africa (NWA) 6704/6693 are…
Meteoritic Abundances of Fatty Acids and Potential Reaction Pathways in PlanetesimalsOPEN ACCESS
James C.-Y. Lai, Ben K. D. Pearce, Ralph E. Pudritz, Drake Lee accepted for publication in Icarus PDF (OPEN ACCESS) “The origin of fatty acids on the prebiotic Earth is important as they likely formed…
No cosmic‐ray precompaction exposure of chondrules in CR2.7 MIL 090657
Antoine S. G. Roth, Ingo Leya Meteoritics & Planetary Science First published: 16 August 2018 LINK Cosmogenic nuclides are useful for reconstructing the cosmic‐ray precompaction exposure history of the chondritic components in the early solar…
Evaluation of petrologic evidence for high partial pressures of SiO(g) in the solar nebula
Alan E. Rubin LINK Meteorit Planet Sci. . doi:10.1111/maps.13180 “Although they cannot be ruled out, high partial pressures of SiO(g) in the solar nebula are not required to produce various petrologic features of chondrules. These…
Mineralogy of volatile‐rich clasts in brecciated meteorites
M. Patzek, A. Bischoff, R. Visser, T. John Meteoritics & Planetary Science First published: 18 July 2018 LINK “Meteoritic breccias are valuable samples as they can contain rare materials from the early solar system as…
First evidence for silica condensation within the solar protoplanetary disk
Mutsumi Komatsu, Timothy J. Fagan, Alexander N. Krot, Kazuhide Nagashima, Michail I. Petaev, Makoto Kimura, and Akira Yamaguchi PNAS July 2, 2018. 201722265; published ahead of print July 2, 2018. https://doi.org/10.1073/pnas.1722265115 LINK “The oldest solar…
Lack of resolvable titanium stable isotopic variations in bulk chondrites
Zhengbin Deng, Frédéric Moynier, Kirsten van Zuilen, Paolo A. Sossi, Emily A. Pringle, Marc Chaussidon Geochimica et Cosmochimica Acta Available online 23 June 2018 LINK “Titanium and calcium are both refractory lithophile elements. Significant stable…
O-Isotope Composition of CI- and CM-Like Clasts in Ureilites, HEDs, and CR Chondrites
Patzek M. *, Pack A., Bischoff A., Visser R., John T. 81st Annual Meeting of The Meteoritical Society 2018 [#6254] abstract “Oxygen isotopes of CM-like clasts from HEDs links them to CM chondrites. However, CI-like…
Primary iron sulfides in CM and CR carbonaceous chondrites: Insights into nebular processes
Singerling, S. A. and Brearley, A. J. (2018) Meteorit Planet Sci. . doi:10.1111/maps.13108 LINK “We have carried out a systematic study involving SEM, EPMA, and TEM analyses to determine the textures and compositions of sulfides…
Calcium and titanium isotopes in refractory inclusions from CM, CO, and CR chondrites
Levke Kööp, Andrew M. Davis, Alexander N. Krot, Kazuhide Nagashima, Steven B. Simon Earth and Planetary Science Letters Volume 489, 1 May 2018, Pages 179–190 Available online 9 March 2018 LINK “Highlights • Some CAIs…
Hydrothermal evolution of the morphology, molecular composition, and distribution of organic matter in CR (Renazzo-type) chondrites
Changela, H. G., Le Guillou, C., Bernard, S. and Brearley, A. J. Meteoritics & Planetary Science. doi: 10.1111/maps.13045 LINK “The morphology, molecular composition, and distribution of organic matter (OM) were investigated in a suite of…
Shapes of chondrules determined from the petrofabric of the CR2 chondrite NWA 801
Charles, C. R. J., Robin, P.-Y. F., Davis, D. W. and McCausland, P. J. A. Meteoritics & Planetary Science. doi: 10.1111/maps.13038 LINK “The approximately spherical shapes of chondrules has long been attributed to surface tension…
Cooling rates of type I chondrules from Renazzo: Implications for chondrule formation
Chaumard, N., Humayun, M., Zanda, B. and Hewins, R. H. Meteoritics & Planetary Science. doi: 10.1111/maps.13040 LINK “Cooling rates are one of the few fundamental constraints on models of chondrule formation. In this study, we…
A TEM study of exsolution in Ca-rich pyroxenes from the Paris and Renazzo chondrites: Determination of type I chondrule cooling rates
Cuvillier, P., Chaumard, N., Leroux, H., Zanda, B., Hewins, R. H., Jacob, D. and Devouard, B. Meteoritics & Planetary Science. doi: 10.1111/maps.13032 LINK “We conducted a transmission electron microscope study of the exsolution microstructures of…
The retention of dust in protoplanetary disks: Evidence from agglomeratic olivine chondrules from the outer Solar SystemOPEN ACCESS (until 25 Feb 2018)
Devin L. Schrader, Kazuhide Nagashima, Scott R. Waitukaitis, Jemma Davidson, Timothy J. McCoy, Harold C. Connolly Jr., Dante S. Lauretta Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 18 December 2017 LINK (OPEN…
Origin and abundance of water in carbonaceous asteroids
Yves Marrocchi, David V. Bekaert, Laurette Piani Earth and Planetary Science Letters, Volume 482, 15 January 2018, Pages 23-32 LINK Highlights • Bulk, matrix and fayalite grains of CV chondrites define a continuous trend. •…
Hf-W chronology of CR chondrites: Implications for the timescales of chondrule formation and the distribution of 26Al in the solar nebula
Gerrit Budde, Thomas S. Kruijer, Thorsten Kleine Geochimica et Cosmochimica Acta In Press, Accepted Manuscript,Available online 24 October 2017 LINK “Renazzo-type carbonaceous (CR) chondrites are distinct from most other chondrites in having younger chondrule 26Al-26Mg…
LOW-TEMPERATURE AQUEOUS ALTERATION ON THE CR CHONDRITE PARENT BODY: IMPLICATIONS FROM IN SITU OXYGEN-ISOTOPE ANALYSES
Christine E. Jilly-Rehak, Gary R. Huss, Kazu Nagashima, Devin L. Schrader Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 19 October 2017 LINK “The presence of hydrated minerals in chondrites indicates that water…
A study of presolar material in hydrated lithic clasts from metal-rich carbonaceous chondrites
Leitner, J., Hoppe, P. and Zipfel, J. Meteoritics & Planetary Science. doi: 10.1111/maps.12994 LINK “We report on the investigation of presolar grain inventories of hydrated lithic clasts in three metal-rich carbonaceous chondrites from the CR…
A history of violence: insights into post-accretionary heating in carbonaceous chondrites from volatile element abundances, Zn isotopes, and water contentsOPEN ACCESS
Brandon Mahan, Frédéric Moynier, Pierre Beck, Emily A. Pringle, Julien Siebert Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 20 September 2017 Update (19 October 2017): PDF (OPEN ACCESS) LINK “Carbonaceous chondrites (CCs)…
Protracted storage of CR chondrules in a region of the disk transparent to galactic cosmic rays.
Roth, A. S. G., Metzler, K., Baumgartner, L. P., Hofmann, B. A. and Leya, I. Meteoritics & Planetary Science. doi: 10.1111/maps.12923 First published: 11 August 2017 LINK “Renazzo-type carbonaceous (CR) chondrites are accretionary breccias that…
Early formation of planetary building blocks inferred from Pb isotopic ages of chondrulesOPEN ACCESS
By Jean Bollard, James N. Connelly, Martin J. Whitehouse, Emily A. Pringle, Lydie Bonal, Jes K. Jørgensen, Åke Nordlund, Frédéric Moynier, Martin Bizzarro Science Advances 09 Aug 2017: Vol. 3, no. 8, e1700407 DOI: 10.1126/sciadv.1700407…
Similarities in Element Content between Comet 67P/Churyumov-Gerasimenko Coma Dust and Selected Meteorite Samples
Oliver J. Stenzel, Martin Hilchenbach, Sihane Merouane, John Paquette, Kurt Varmuza, Cécile Engrand, Franz Brandstätter, Christian Koeberl, Ludovic Ferrière, Peter Filzmoser Mon Not R Astron Soc doi.org/10.1093/mnras/stx1908 LINK “We have analyzed the element composition and…
Magnetite in Comet Wild 2: Evidence for parent body aqueous alterationOPEN ACCESS
Hicks, L. J., Macarthur, J. L., Bridges, J. C., Price, M. C., Wickham-Eade, J. E., Burchell, M. J., Hansford, G. M., Butterworth, A. L., Gurman, S. J., Baker, S. H. Meteorit Planet Sci. doi:10.1111/maps.12909 LINK…
Calcium and Titanium Isotope Systematics in Refractory Inclusions from CM, CO, and CR Chondrites
Kööp L. * Davis A. M. Krot A. N. Nagashima K. Simon S. B. 80th Annual Meeting of the Meteoritical Society 2017 [#6280] abstract (PDF) “We studied a large number of CAIs from three different…
Comparative Microanalytical Study of Solid Organic Material in the CR2 Grove Mountain 021710 and the Ungrouped Carbonaceous Chondrite Ningqiang
Changela H. G. * Zhao X. Miao B. Xia Z. Lin Y. 80th Annual Meeting of the Meteoritical Society 2017 [#6212] abstract (PDF) “Organic material has been characterized in situ using traditional polished thin sections…
Microanalytical Investigation of Fine-Grained Matrix Material in Elephant Moraine 92042: Effects of Parent Body Processing on Primitive Components
Koch I. Floss C. * 80th Annual Meeting of the Meteoritical Society 2017 [#6013] abstract (PDF) “Aqueous alteration has affected presolar silicate abundances in the CR chondrite EET 92042 and has resulted in elemental changes…
Insights into Parent Body Alteration from the Distribution of Water and Hydroxyl in Carbonaceous Chondrites
Hamilton V. E. * Abreu N. M. Connolly H. C. Jr. abstract (PDF) 80th Annual Meeting of the Meteoritical Society 2017 [#6263] “We are using µ-FTIR to characterize the spatial distribution of water and hydroxyl…
D/H diffusion in serpentine
Hélène Pilorge, Bruno Reynard, Laurent Remusat, Sylvie Le Floch, Gilles Montagnac, Hervé Cardon Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 29 May 2017 LINK “Interactions between aqueous fluids and ultrabasic rocks are…
The Bulk Valence State of Fe and the Origin of Water in Chondrites
S. Sutton, C.M.O’D. Alexander, A. Bryant, A. Lanzirotti, M. Newville, E.A. Cloutis Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 19 May 2017 LINK “There is abundant petrologic evidence for the oxidation of…
Origin of crystalline silicates from Comet 81P/Wild 2: Combined study on their oxygen isotopes and mineral chemistry
Céline Defouilloy, Daisuke Nakashima, David J. Joswiak, Donald E. Brownlee, Travis J. Tenner, Noriko T. Kita Earth and Planetary Science Letters, Volume 465, 1 May 2017, Pages 145-154 LINK “Highlights • 7 silicates grains from…
Evolution of Morphological and Physical Properties of Laboratory Interstellar Organic Residues with Ultraviolet IrradiationOPEN ACCESS
L. Piani, S. Tachibana, T. Hama, H. Tanaka, Y. Endo, I. Sugawara, L. Dessimoulie, Y. Kimura, A. Miyake, J. Matsuno, A. Tsuchiyama, K. Fujita, S. Nakatsubo, H. Fukushi, S. Mori, T. Chigai, H. Yurimoto, and…
A divergent heritage for complex organics in Isheyevo lithic clastsOPEN ACCESS
Elishevah M.M.E. van Kooten, Kazuhide Nagashima, Takeshi Kasama, Susanne Wampfler, Jon P. Ramsey, Søren Frimann, Zoltan I. Balogh, Martin Schiller, Daniel P. Wielandt, Ian A. Franchi, Jes K. Jørgensen, Alexander N. Krot, Martin Bizzarro Geochimica…
Hafnium-Tungsten Chronology of CR Chondrites
G. Budde, T. S. Kruijer, T. Kleine 48th Lunar and Planetary Science Conference (2017), Abstract #1886 LINK
Abundances and Compositions of Presolar Grains in CR2 Chondrite EET 92042
I. Koch, C. Floss 48th Lunar and Planetary Science Conference (2017), Abstract #2984 LINK
Ultra-Refractory Calcium-Aluminum-Rich Inclusion in an AOA in CR Chondrite Yamato-793261
M. Komatsu, T. J. Fagan, A. Yamaguchi, T. Mikouchi, M. Yasutake, M. E. Zolensky 48th Lunar and Planetary Science Conference (2017), Abstract #2009 PDF
Brachinite-Like Clast in the Kaidun Meteorite: First Report of Primitive Achondrite Material
Higashi, K.; Hasegawa, H.; Mikouchi, T.; Zolensky, M. E. Conference Paper Lunar and Planetary Science Conference ; 48th; 20-24 Mar. 2017; The Woodlands, TX; United States JSC-CN-38570 Date Acquired: Jan 26, 2017 PDF 48th Lunar…
The key role of meteorites in the formation of relevant prebiotic molecules in a formamide/water environmentOPEN ACCESS
Luca Rotelli, Josep M. Trigo-Rodríguez, Carles E. Moyano-Cambero, Eleonora Carota, Lorenzo Botta, Ernesto Di Mauro & Raffaele Saladino Scientific Reports 6, Article number: 38888 (2016) doi:10.1038/srep38888 Published online: 13 December 2016 LINK (OPEN ACCESS) PDF…
High-temperature Rims around Calcium-aluminum-rich Inclusions from the CR, CB and CH Carbonaceous Chondrites
Alexander N. Krot, Kazuhide Nagashima, Elishevah M.M. van Kooten, Martin Bizzarro Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 1 October 2016 LINK “We describe the mineralogy, petrology and oxygen isotopic compositions of…
53Mn-53Cr Radiometric Dating of Secondary Carbonates in CR Chondrites: Timescales for Parent Body Aqueous AlterationOPEN ACCESS
Christine E. Jilly-Rehak, Gary R. Huss, Kazuhide Nagashima Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 28 September 2016 LINK PDF (OPEN ACCESS) “We present 53Mn-53Cr ages of secondary carbonates in Renazzo-like (CR)…
Why is it so difficult to classify Renazzo-type (CR) Carbonaceous Chondrites? – Implications from TEM observations of matrices for the sequences of aqueous alteration
Neyda M. Abreu Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 1 September 2016 LINK “A number of different classification schemes have been proposed for the CR chondrites; this study aims at reconciling…
Magnesium and 54Cr isotope compositions of carbonaceous chondrite chondrules – insights into early disk processesOPEN ACCESS
Mia B. Olsen, Daniel Wielandt, Martin Schiller, Elishevah M.M.E. Van Kooten, Martin Bizzarro Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 16 July 2016 LINK “We report on the petrology, magnesium isotopes and…
Distribution of 26Al in the CR chondrite chondrule-forming region of the protoplanetary disk
Devin L. Schrader, Kazuhide Nagashima, Alexander N. Krot, Ryan C. Ogliore, Qing-Zhu Yin, Yuri Amelin, Claudine H. Stirling, Angela Kaltenbach Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 23 June 2016 LINK (OPEN…
Aliphatic Amines in Antarctic CR2, CM2, and CM1/2 Carbonaceous Chondrites
José C. Aponte, Hannah L. McLain, Jason P. Dworkin, Jamie E. Elsila Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 18 June 2016 doi:10.1016/j.gca.2016.06.018 LINK “Meteoritic water-soluble organic compounds provide a unique record…
Relationship Between Asteroid 1 Ceres and Chondrite Meteorites on the Basis of Mineralogy and UV-Visible Spectroscopy
Farsang S. Raub T. D. Grady M. M. 79th Annual Meeting of the Meteoritical Society (2016) #6213 LINK
The Kaidun Breccia Material Variety: New Clasts and Updated Hypothesis on a Space Trawl Origin
Ivanova M. A. * Lorenz C. A. Ma C. Ivanov A. V. 79th Annual Meeting of the Meteoritical Society (2016) #6100 LINK
Mineralogy of iron sulfides in CM1 and CI1 lithologies of the Kaidun breccia: Records of extreme to intense hydrothermal alteration
Harries, D. and Zolensky, M. E. Meteoritics & Planetary Science. doi: 10.1111/maps.12648 LINK “The polymict Kaidun microbreccia contains lithologies of C-type chondrites with euhedral iron sulfide crystals of hydrothermal origin. Our FIB-TEM study reveals that…
Origin of the eclogitic clasts with graphite-bearing and graphite-free lithologies in the Northwest Africa 801 (CR2) chondrite: Possible origin from a Moon-sized planetary body inferred from chemistry, oxygen isotopes and REE abundances
H. Hiyagon, N. Sugiura, N.T. Kita, M. Kimura, Y. Morishita, Y. Takehana Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 27 April 2016 LINK “In order to clarify the origin of the eclogitic…
Refractory and semi-volatile organics at the surface of comet 67P/Churyumov-Gerasimenko: Insights from the VIRTIS/ROSETTA Imaging Spectrometer
E. Quirico, L.V. Moroz, B. Schmitt, G. Arnold, M. Faure, P. Beck, L. Bonal, M. Ciarniello, F. Capaccioni, G. Filacchione, S. Erard, C. Leyrat, D. Bockelée-Morvan, A. Zinzi, E. Palomba, P. Drossart, F. Tosi, M.T….
A Space Oddity: A Nanosims Study of a Primitive Ultracarbonaceous Clast and Fine-Grained Matrix in the LaPaz Icefield 02342 CR Chondrite
C. E. Moyano-Cambero, L. R. Nittler, J. M. Trigo-Rodríguez, C. M. O’D. Alexander, J. Davidson, R. M. Stroud 47th Lunar and Planetary Science Conference (2016), Abstract #2537 PDF
Tafassasset has been reclassified as “primitive achondrite”
Writeup from MB 105: Meteoritical Bulletin Database / Writeup from MB 105 “Tafassasset, reclassification Agadez, Niger Find: 2000 Classification: Primitive achondrite History: A comparison of the overall petrography, modal mineralogy, mineral compositions, oxidation state, and…
Thermal recalcitrance of the organic D-rich component of ordinary chondrites
L. Remusat, L. Piani, S. Bernard Earth and Planetary Science Letters, Volume 435 Available online 29 December 2015 doi:10.1016/j.epsl.2015.12.009 LINK “Carbonaceous and ordinary chondrites (CCs and OCs) contain insoluble organic matter (IOM) with large D-excess…
The path of reduced nitrogen toward early earth: the cosmic trail and its solar shortcuts
Sandra Pizzarello and Maitrayee Bose The Astrophysical Journal, Volume 814, Number 2 LINK “Large isotopic anomalies are found in meteoritic insoluble organic materials (IOMs) and, for nitrogen, show 15N-excesses up to ${\delta }^{15}$N ~ 5000‰….
The deuterium/hydrogen distribution in chondritic organic matter attests to early ionizing irradiation
Boris Laurent, Mathieu Roskosz, Laurent Remusat, François Robert, Hugues Leroux, Hervé Vezin, Christophe Depecker, Nicolas Nuns, Jean-Marc Lefebvre Nature Communications 6, Article number: 8567 doi:10.1038/ncomms9567 LINK (full text) “Primitive carbonaceous chondrites contain a large array…
Organic and inorganic correlations for Northwest Africa 852 by synchrotron-based Fourier transform infrared microspectroscopy
Yesiltas, M., Peale, R. E., Unger, M., Sedlmair, J. and Hirschmugl, C. J. Meteoritics & Planetary Science. doi: 10.1111/maps.12498 Article first published online: 21 SEP 2015 LINK “Relationships between organic molecules and inorganic minerals are…
Bidirectional reflectance spectroscopy of carbonaceous chondrites: Implications for water quantification and primary composition
A. Garenne, P. Beck, G. Montes-Hernandez, O. Brissaud, B. Schmitt, E. Quirico, L. Bonal, C. Beck, K.T. Howard Icarus In Press, Accepted Manuscript Received 21 April 2015, Revised 2 September 2015, Accepted 2 September 2015,…
Nature’s Starships II: Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies
Alyssa K. Cobb, Ralph E. Pudritz, Ben K. D. Pearce Accepted for publication in ApJ arXiv:1506.06740 PDF LINK abstract Carbonaceous chondrite meteorites are known for having high water and organic material contents, including amino acids….
Cosmic-Ray Exposure Ages of Chondrules
Roth A. S. G. * Metzler K. Hofmann B. Baumgartner L. P. Leya I. 78th Annual Meeting of the Meteoritical Society (2015), abstract #5224 abstract (PDF)
Grain Size Distribution in the Matrix of Primitive Meteorites
Vaccaro E. Wozniakiewicz P. J. Starkey N. A. Franchi I. A. Russell S. S. 78th Annual Meeting of the Meteoritical Society (2015), abstract #5258 abstract (PDF)
Tafassasset: Evidence of early incipient differentiation on a metal-rich chondritic parent body
Thomas Breton, Ghylaine Quitté, Michael J. Toplis, Marc Monnereau, Jean-Louis Birck, Christa Göpel, Cyril Charles Earth and Planetary Science Letters Volume 425, 1 September 2015, Pages 193–203 LINK
Near-infrared Spectroscopy of 3:1 Kirkwood Gap Asteroids III
Sherry K. Fieber-Beyer, Michael J. Gaffey Icarus In Press, available online 5 May 2015 doi:10.1016/j.icarus.2015.04.034 LINK
Early cosmic ray irradiation of chondrules and prolonged accretion of primitive meteorites
Uta Beyersdorf-Kuis , Ulrich Ott , Mario Trieloff Earth and Planetary Science Letters Volume 423, 1 August 2015, Pages 13–23 doi:10.1016/j.epsl.2015.04.024 LINK
Widespread oxidized and hydrated amorphous silicates in CR chondrites matrices: Implications for alteration conditions and H2 degassing of asteroids
Corentin Le Guillou, Hitesh G. Changela, Adrian J. Brearley Earth and Planetary Science Letters available online 3 April 2015 doi:10.1016/j.epsl.2015.02.031 LINK
Morphological Study of Insoluble Organic Matter from Carbonaceous Chondrites: Correlation with Petrologic Grade
Hitesh G. Changela, George D. Cody, Conel M.O’D. Alexander, Z Peeters, Larry R. Nittler, Rhonda M. Stroud Geochimica et Cosmochimica Acta available online 16 February 2015 doi:10.1016/j.gca.2015.02.007
Magnetic Fields in the Late-Stage Solar Nebula Recorded in CR Chondrites
Fu R. R., Weiss B. P., Schrader D. L. PDF LINK
Cooling Rates of Type I Chondrules from the Renazzo CR2 Chondrite: Implications for Chondrule Formation
N. Chaumard, M. Humayun, B. Zanda, R. H. Hewins 46th Lunar and Planetary Science Conference (2015), Abstract #1907 PDF LINK
Processes Affecting the CR Chondrites Parent Body: Petrology, Mineralogy and Chemical Composition of the Matrices of Antarctic CR Carbonaceous Chondrites
N. M. Abreu 46th Lunar and Planetary Science Conference (2015), Abstract #2561 PDF LINK
Miller Range 090657: A Very Pristine Renazzo-Like (CR) Carbonaceous Chondrite
J. Davidson, C. M. O’D. Alexander, D. L. Schrader, L. R. Nittler, R. Bowden 46th Lunar and Planetary Science Conference (2015), Abstract #1603 PDF LINK
Carbonate abundances and isotopic compositions in chondrites
C. M. O’D. Alexander, R. Bowden, M. L. Fogel and K. T. Howard Meteoritics & Planetary Science. doi: 10.1111/maps.12410 LINK We report the bulk C abundances, and C and O isotopic compositions of carbonates in…
The formation and alteration of the Renazzo-like carbonaceous chondrites III: Toward understanding the genesis of ferromagnesian chondrules
Devin L. Schrader, Harold C. Connolly Jr., Dante S. Lauretta, Thomas J. Zega, Jemma Davidson and Kenneth J. Domanik first published online: 22 DEC 2014 | DOI: 10.1111/maps.12402 LINK
Eclogitic clasts found in NWA 801 CR2 chondrite: Formation of high pressure minerals in deep interior of a Moon-sized planetesimal
Hajime Hiyagon (Univ. Tokyo), Naoji Sugiura (Univ. Tokyo), Noriko Kita (Univ. Wisconsin-Madison), Makoto Kimura (Ibaraki Univ.), Yuichi Morishita (Shizuoka Univ.) and Yoshie Takehana (Univ. Tokyo) PDF LINK
Classification of hydrous meteorites (CR, CM and C2 ungrouped) by phyllosilicate fraction: PSD-XRD modal mineralogy and planetesimal environments
K.T. Howard, C.M.O’D. Alexander, D.L. Schrader, K.A. Dyl DOI: 10.1016/j.gca.2014.10.025 available online 4 November 2014 LINK Here we report the bulk mineralogies and degrees of hydration in 37 different carbonaceous chondrites: Renazzo-like (CR), Mighei-like (CM),…
Fluid-induced organic synthesis in the solar nebula recorded in extraterrestrial dust from meteorites
Vollmer C, Demie Kepaptsoglou D, Leitner J, Busemann H, Spring NH, Ramasse QM, Hoppe P, Nittler LR (2014) Proceedings of the National Academy of Sciences 111, 43, 15338–15343 LINK The direct association of both IDP-like…
Oxygen isotope ratios of FeO-poor chondrules in CR3 chondrites: Influence of dust enrichment and H2O during chondrule formation
Travis J. Tenner, Daisuke Nakashima, Takayuki Ushikubo, Noriko T. Kita, Michael K. Weisberg Geochimica et Cosmochimica Acta In Press, available online 15 October 2014 DOI: 10.1016/j.gca.2014.09.025 LINK
A water–ice rich minor body from the early Solar System: The CR chondrite parent asteroid
Devin L. Schrader, Jemma Davidson, Richard C. Greenwood, Ian A. Franchi, Jenny M. Gibson Earth and Planetary Science Letters Volume 407, 1 December 2014, Pages 48–60 DOI: 10.1016/j.epsl.2014.09.030 LINK Update (11 October): PDF LINK (free…
Coordinated NanoSIMS and FIB-TEM Analyses of Organic Matter and Associated Matrix Materials in CR3 Chondrites
Floss C, Le Guillou C and Brearley A. Geochimica et Cosmochimica Acta Volume 139, 15 August 2014, Pages 1–25 LINK
The abundance and stability of “water” in type 1 and 2 carbonaceous chondrites (CI, CM and CR)
Garenne A, Beck P, Montes-Hernandez G, Chiriac R, Toche F, Quirico E, Bonal L and B. Schmitt B (in press) Geochimica et Cosmochimica Acta Volume 137, 15 July 2014, Pages LINK
Nature’s Starships. I. Observed Abundances and Relative Frequencies of Amino Acids in Meteorites
Cobb AK and Pudritz RE (2014) The Astrophysical Journal 783:140. ApJ 783 140. doi:10.1088/0004-637X/783/2/140 LINK We see a predominance in the abundance and variety of amino acids in CM2 and CR2 meteorites. The range in…
Variations in the O-isotope composition of gas during the formation of chondrules from the CR chondrites
Schrader DL, Nagashima K, Krot AN, Ogliore RC and Hellebrand E (in press) Geochimica et Cosmochimica Acta Volume 132, 1 May 2014, Pages 50–74 LINK The compositional and O-isotope data suggest that BO chondrules experienced…
Evolution of organic matter in Orgueil, Murchison and Renazzo during parent body aqueous alteration: in-situ investigations
Le Guillou C, Bernard S, Brearley AJ and Remusat L Geochimica et Cosmochimica Acta Volume 131, 15 April 2014, Pages 368–392 DOI: 10.1016/j.gca.2013.11.020 LINK (abstract) In contrast to Renazzo, organic grains in Murchison and Orgueil…
Transmission infrared spectra (2-25 microns) of carbonaceous chondrites (CI, CM, CV-CK, CR, C2 ungrouped): mineralogy, water, and asteroidal processes
Beck P, Garenne A, Quirico E, Bonal L, Montes-Hernandez G, Moynier F and Schmitt B Icarus Volume 229, February 2014, Pages 263–277 LINK
Relationships between organics, water and early stages of aqueous alteration in the pristine CR3.0 chondrite MET 00426
Le Guillou C and Brearley A Geochimica et Cosmochimica Acta Volume 131, 15 April 2014, Pages 344–367 LINK
Trace element geochemistry of CR chondrite metal
Jacquet E, Paulhiac-Pison M, Alard O, Kearsley AT and Gounelle M Meteoritics and Planetary Science, volume 48, issue 10, 1981-1999, October 2013 doi: 10.1111/maps.12212 (updated 6 February 2015) PDF (full text) LINK
In situ Observation of D-rich Carbonaceous Globules Embedded in NWA 801 CR2 chondrite
Hashiguchi M, Kobayashi S and Yurimoto H Geochimica et Cosmochimica Acta Volume 122, 1 December 2013, Pages 306–323 DOI: 10.1016/j.gca.2013.08.007 LINK
The classification of CM and CR chondrites using bulk H, C and N abundances and isotopic compositions
Alexander CMO’D, Howard KT, Bowden R and Fogel ML (in press) Geochimica et Cosmochimica Acta DOI: 10.1016/j.gca.2013.05.019 Volume 123, 15 December 2013, Pages 244–260 Available online 25 May 2013 LINK
