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CONTENTS — C Through D 68th Annual Meteoritical Society Meeting (2005) alpha_c-d.pdf CONTENTS — C through D Distinguishing Between Sulfur and Carbon Bearing Metallic Liquids During Meteorite Histories N. L. Chabot, A. J. Campbell, M. Humayun, J. H. Jones, and H. V. Lauer............................................ 5021 Effects of Changing Pyroxene Composition on Li and B Behavior in Lunar Basalts: Implications for Martian Magmas J. Chaklader and C. K. Shearer ............................................................................................................. 5253 Were Permian-Triassic Extinctions Sudden and Caused by Impact? C. R. Chapman ....................................................................................................................................... 5139 Li and B Isotopic Systematics in CAIs, Chondrules and Differentiated Meteorites M. Chaussidon, F. Robert, M. Gounelle, G. Kurat, and J.-A. Barrat..................................................... 5183 Fine-grained Rims Around Chondrules and Refractory Inclusions in ALHA77307 are Compositionally Similar L. J. Chizmadia, E. R. D. Scott, and A. N. Krot...................................................................................... 5268 Can Asteroids be Used to Make Mars Habitable? E. J. Clacey ............................................................................................................................................ 5121 James Smithson (c1765-1829): Smithsonian Institution Founder & Its First Meteorite Investigator R. S. Clarke Jr. and H. P. Ewing............................................................................................................ 5120 Lunar Organic Compounds: Search and Characterization S. J. Clemett, L. P. Keller, and D. S. McKay.......................................................................................... 5300 The History of Early Solar System Processes Recorded in the Structure of Meteoritic Organic Solids G. D. Cody, C. M. O’D Alexander, M. Fogel, T. Araki, and D. Kilcoyne.............................................. 5163 More Impact-Melt Clasts in Feldspathic Lunar Meteorites B. A. Cohen ............................................................................................................................................ 5314 A Review of 62 Meteorites Recovered from Algeria, Libya and Western Sahara K. J. Cole, B. D. Dod, G. A. Jerman, R. Pelisson, R. Pelisson, and P. P. Sipiera.................................. 5320 Can Meteorite Porosity Provide Habitats for Interplanetary Transport of Microbes? G. J. Consolmagno SJ, L. J. Rothschild, M. M. Strait, and D. T. Britt................................................... 5101 Nickel Isotopic Composition of Meteoritic Metal: Implications for the Initial 60Fe/56Fe Ratio in the Early Solar System D. L. Cook, M. Wadhwa, R. N. Clayton, P. E. Janney, N. Dauphas, and A. M. Davis........................... 5136 EET 83230: Relationship to Group IVA Irons, and Styles and Timing of Parent Body Oxidation C. M. Corrigan, T. J. McCoy, D. Rumble, W. McDonough, J. Goldstein, G. Benedix, J. Yang, R. Walker, R. Ash, and J. Honesto............................................................................................ 5190 Mg Isotopic Study of Wark-Lovering Rims in Type A Inclusions from CV Chondrites: Formation Mechanisms and Timing M. Cosarinsky, D. J. Taylor, K. D. McKeegan, and I. D. Hutcheon ...................................................... 5284 68th Annual Meteoritical Society Meeting (2005) alpha_c-d.pdf Highly Siderophile Elements in the Admire, Imilac, and Springwater Pallasites L. R. Danielson, M. Humayun, and K. Righter....................................................................................... 5276 The U-Th Age of the Milky Way N. Dauphas............................................................................................................................................. 5029 The Nucleosynthesis of Short-lived Isotopes in Asymptotic Giand Branch Stars A. M. Davis and R. A. Gallino................................................................................................................ 5309 Petrogenesis of Martian Nakhlite MIL 03346 J. M. Day, L. A. Taylor, C. Floss, H. Y. McSween Jr., Y. Liu, and E. Hill ............................................. 5288 Textural Analysis and Crystallization Histories of La Paz Mare Basalt Meteorites J. M. Day, L. A. Taylor, E. Hill, and Y. Liu............................................................................................ 5185 Mechanisms for Melt Vein Formation in Meteorites P. S DeCarli, Z. Xie, and T. G. Sharp .................................................................................................... 5141 What is the Tycho Component at Apollo 17? J. W. Delano, N. E. B. Zellner, T. D. Swindle, F. Barra, E. Olsen, and D. C. B. Whittet....................... 5022 Fracturing in Terrestrial Impact Craters: The Relationship of Confining Pressure to Dynamic Tensile Fracture Strength M. R. Dence............................................................................................................................................ 5091 Limitations on the Production of Short-lived Radionuclides by Irradiation in the Early Solar System S. J. Desch.............................................................................................................................................. 5265 The Meaning of Iron 60: A Nearby Supernova Injected Radionuclides into Our Solar System S. J. Desch, N. Ouellette, and J. J. Hester.............................................................................................. 5264 Unusual Staurolite-rich Target Rocks and Glass-rich Suevite at the Lake Bosumtwi Impact Structure, Ghana, W. Africa A. Deutsch, F. Langenhorst, K. Heide, U. Bläß, and A. Sokol ............................................................... 5172 Bulk Composition of the Moon: 2. Volatiles and Isotopes M. J. Drake and G. J. Taylor.................................................................................................................. 5100 Carswell Impact Structure, Saskatchewan, Canada: Geological, Petrographical and Geophysical Results, and Implications for the Age of the Astrobleme I. Duhamel, S. Genest, F. Robert, and A. Tremblay ............................................................................... 5126 Assembly of the Descartes Terrane: Argon Ages of Lunar Breccias 67016 and 67455 R. A. Duncan and M. D. Norman ........................................................................................................... 5149 Identification of Alkalic Rocks Using Thermal Emission Spectroscopy: Applications to Martian Remote Sensing T. L. Dunn and H. Y. McSween Jr.......................................................................................................... 5254 68th Annual Meteoritical Society Meeting (2005) 5021.pdf DISTINGUISHING BETWEEN SULFUR AND CARBON BEARING METALLIC LIQUIDS DURING METEORITE HISTORIES. N. L. Chabot1, A. J. Campbell2, M. Humayun3, J. H. Jones4, and H. V. Lauer5. 1The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD, 20723. E- mail: [email protected]. 2Department of the Geophysical Sciences, The University of Chicago, 5734 S. Ellis Ave., Chi- cago, IL, 60637. 3National High Magnetic Field Laboratory and Department of Geological Sciences, Florida State University, Tallahassee, FL, 32310. 4NASA Johnson Space Center, Mail Code KR, Houston, TX, 77058. 5ESCG/Barrios Technology, P.O. Box 58477, Houston, TX, 77258. Many planetary processes involve a metallic liquid, such as the separation of metal from silicate during differentiation and the crystallization of metallic cores as planetary bodies cool. However, for many meteorite samples, separation from or re- moval of a metallic liquid is inferred in a meteorite’s history but often the metallic liquid itself is no longer present in the meteor- ite sample. This has been proposed as the case for a number of meteorite types. For example, some iron meteorites represent the solid metal that crystallized from the molten metallic cores of asteroid-sized parent bodies [1]. The siderophile element signa- ture of ureilites has been attributed to partial melting with the subsequent removal of a metallic liquid [2, 3]. More generally, the achondrite meteorite groups that derived from differentiated parent bodies sample the residual silicate material left behind following the early separation of a metallic liquid [e.g. 4]. Though the metallic liquids may no longer be present in these meteorite samples, it is possible to get information about the composition of the metallic liquids based on the element frac- tionations that the planetary processes left behind. Here we pre- sent solid metal-liquid metal partition coefficients from experi- ments involving C-bearing metallic liquids [5] and compare these results to previous S-bearing data [6]. We focus on the three ele- ments of Cu, Re, and W, for which S and C are observed to have distinctly different effects on the partitioning behaviors. Because different effects will result in different element fractionations in the meteorite samples, by specifically examining Cu, Re, and W concentrations in meteorites, insight can potentially be gained into the presence of S or C during a meteorite’s history. Distin- guishing between fractionations due to the presence of S versus C may be of specific interest to interpreting the history of ureilites, since ureilites contain C-bearing phases such as graphite
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