 | | Journal (article/letter/editorial) | | from sodalite in Allende, dark inclusions in Efremovka (CV3), and some samples from CM chondrites all...measurements, a standard technique is to irradiate a meteorite sample with neutrons (which produces lz8Xe from...determined from the 1147 T. D. Swindle I \ Efremovka Dark Inclusions High i/Xe (e.g., Chondritic)...I-Xe plot for high-temperature data from two Efremovka dark inclusions (Swindle et al., 1998). Note that...alteration. 1149 Dark Inclusions in Efremovka We will start with Efremovka, a CV3. The Arizona noble gas laboratory |  | | Journal (article/letter/editorial) | | to the minimally thermally metamorphized CO3 meteorite ALHA 77307. With increasing metamorphic grade...onion-shell model of structure and cooling history of meteorite parent bodies where the temperature increases...presence of 127I in nanodiamonds of the Efremovka meteorite (Holland et al., 2003) and the increase of...coarse-grained diamond fraction ED-12 of the Efremovka CV3 meteorite is about 20 Ma (Holland et al., 2003)....from the Efremovka CV3 meteorite took place about 20 Ma after the I–Xe closure for the meteorite Shallowater |  | | Journal (article/letter/editorial) | | components may be oxidized and sulphidized to magnetite, Ni-rich metal and sulfides. Silicates in all...the Allende meteorite fell in Mexico, CV3 chondrites have played a major role in meteorite studies. The...Allende quickly became the most widely studied meteorite, a title it still holds today. Initially, studies...according to their abundances of metallic Fe,Ni and magnetite. McSween suggested that Allende, an oxidized CV3...diversity of carbonaceous asteroids and to relate meteorite and asteroid types (e.g.,Bell et al., 1989). |  | | Journal (article/letter/editorial) | | to possible decay of extinct 36Cl in the Efremovka meteorite. Trapped 22Ne in the range of (1.4 –2.5)...indicates that the sample has been analyzed. Meteorite (Abbreviation)† Type Haverö (Hav) Monomict...measure of the plasma temperature in the nebular region, where gases are ion implanted into the ureilite...and O (for HClO4 residue) respectively to the meteorite name, with a hyphenation. 2.3. Gas Extraction...Isotopic ratios represent 95% confidence limits. Meteorite 3 4 He ⫺8 10 He 22 Ne 411.4 10.9 Kenna |  | | Journal (article/letter/editorial) | | Range, Wyoming, 60( 1): 95 Antarctica ALH84001, magnetite, 60(24): 5149 ALH84001, S, isotope systematics...oxide), Azul, Brazil, 60( 12): 2219 Monument Draw, meteorite, 60( 14): 2698 phengite, Dora-Maira nappe, western...Allende, AF clast, microtexture, 60( 14): 2561 Efremovka, K, isotope composition, 60( IO): 1828 Calcite...surface chemistry, dissolution, 60( 16): 3067 Efremovka, meteorite K, isotope composition, 60( 10): 1823 England...chondrites, carbonaceous, 60( 17): 3354 iron meteorite, 60( 15): 2891 K-T boundary layer, Gubbio, Italy |  | Nakashima, Daisuke, Ott, Ulrich, Hoppe, Peter, El Goresy, Ahmed (2008) Search for extinct 36Cl: Vigarano CAIs, the Pink Angel from Allende, and a Ningqiang chondrule. Geochimica et Cosmochimica Acta, 72 (24) 6141-6153 doi:10.1016/j.gca.2008.10.001 | Journal (article/letter/editorial) | | alteration occurred in the solar nebula or on the meteorite parent body (Brearley, 2003). Radioactive 36Cl...overabundances in bulk noble gas measurements of the Efremovka CV3 chondrite, and inferred a 36Cl/35Cl ratio...sections from the Vigarano meteorite and a thin section from the Ningqiang meteorite were prepared. Two thin...and 36S, the dynamic background in the 36 S mass region, and 37Cl were measured in a combined peak jumping...second step the dynamic background in the 36S mass region was re- 36 Cl 6143 corded by changing the deflection |  | | Journal (article/letter/editorial) | | if the dust (1-10 JIm) in the chondrule-forming region experienced similar conditions to chondrules (100-1000...be possible to explain rim, matrix, and bulk meteorite refractory and common lithophile compositions...extracted presolar diamonds from the Allende meteorite by the method described in [I]. The optical properties...CRYSTALLIZATION OF PYROXENE AND SPINEL IN GABBROIC LUNAR METEORITE ASUKA 881757. T. Arai, H. Takeda, and P. H. Warren...University of Tokyo, Hongo, Tokyo 113, Japan. Lunar meteorite Asuka (A)88 1757 is a distinct new type of low-Ti |  | | Journal (article/letter/editorial) | | l6-m.y.-old structure formed by the impact of a meteorite with the Earth. The long history of geological...ISOTOPE FRACTIONATION IN THE E2 CAI TYPE A FROM THE EFREMOVKA CV3 CHONDRITE. S. V. Afanassiev', S. G. Simakinz...type A CAI is one of the largest CAIs of the Efremovka Chondrite. The inclusion has been studied for...Zinc is exclusively located within the FeNisulfide region. This observation complicates the discussed models...marginal parts of the nuggets are decorated by metal-magnetite eutecticlike intergrowths. The outermost part |  | | Book | | it, it was just at this time that the Allende meteorite fell and the minerals contained within the so-called...Silliman Chair and being curator of the Yale meteorite collection. In a continuation of Karl’s foray...chemical histories both in the solar nebula and in meteorite parent bodies. It was in CAIs that the great discovery...interstellar medium, in the solar nebula, in meteorite parent bodies, and during atmospheric entry. Each...realization in the early 1970s that there are natural meteorite concentration mechanisms at work there. There |  | | Journal (article/letter/editorial) | | compact group of bodies and form the stable "meteorite swarm" in resonant orbit (Hughes, 1982). A small...from the recent cosmic-ray irradiation of the meteorite; the rest presumably comes from a presolar cosmic-ray...Interstellar amorphous carbon in the Murchison meteorite: Carrier of neon-E(L). Sachiko Amari,' Edward...other than the suggestion that the ice in this region is probably close to a steady state condition....movement of the ice with some ice dropping into the meteorite concentration zone of the Main Icefield. The majority |  | Ouellette, N., Desch, S.J., Bizzarro, M., Boss, A.P., Ciesla, F., Meyer, B. (2009) Injection mechanisms of short-lived radionuclides and their homogenization. Geochimica et Cosmochimica Acta, 73 (17) 4946-4962 doi:10.1016/j.gca.2008.10.044 | Journal (article/letter/editorial) | | calcium-aluminum-rich inclusion (CAI) from the Allende meteorite by McKeegan et al. (2000). Following this discovery...also been found in hibonites from the Murchison meteorite, at levels that are consistent with the initial...demonstrates that 26Al was present in the accretion region of terrestrial planets and planetesimals at levels...detailed K isotope study of CAIs from the Efremovka meteorite that defined an initial 41Ca abundance of...chondritic components was reported in troilite and magnetite (Tachibana and Huss, 2003; Mostefaoui et al., |  | | Book | | position of 56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneously—replenishing...of burning region (central or shell burning) and depleting the fuel elsewhere in that region at the same...burning of this fuel then commences outside that region. Table 1 summarizes the burning stages and their...maximum temperatures that have been reached in each region in the preceding hydrostatic burning stages (Table |  | | Journal (article/letter/editorial) | | MÖSSBAUER SPECTROSCOPY OF OLIVINES FROM THE D’ORBIGNY METEORITE Y. A. Abdu1, M. E. Varela2 and F. C. Hawthorne1...structural OH bands are observed in the OH-stretching region (3800-3000 cm)1) for all samples. Mössbauer spectroscopy...(d13C approximately 0 to +5&) lining vugs in the meteorite. There are also differences in magmatic carbon...texture. Matrix is rich in opaques, particularly magnetite and sulfides. In addition, some matrix regions...fragments and abundant, rounded, micronsized magnetite and pentlandite grains have been identified. Conclusion: |  | | Book | | for thermal metamorphism and differentiation of meteorite parent bodies in the early solar system, that...routine! In the case of meteorites, every new meteorite was analyzed when the sample became available...elements 3He Diamond C V Garnet Ilmenite Magnetite Quartz Mg, Al, Si, O, Fe Fe, Ti, O Fe, O Si,...1990). Attempts to use the ubiqui¬ tous minerals magnetite and ilmenite, in acidic and basic rocks, are now...of a deep-seated rock by glacier action, or a meteorite impact, or exposing a previously shielded rock |  | | Journal (article/letter/editorial) | | Science Tunis, Tunisia, 4 Meteorite Laboratory Lehmweg Gifhorn, Germany, 5 Meteorite Recon Mühlendamm Hamburg...calculation of meteorite flux is possible [4]. Following previous estimation of meteorite flux based on...geographical and morpho-structural district located in NW Argentina. This region is characterized by an extremely...structures in the alluvial fan, or the result of a meteorite shower. Their age, whatever the event is, is very...ANALYSIS (INAA) FOR ELEMENTAL COMPOSITION OF FRESH METEORITE FALL IN ORISSA, INDIA (2003). B. Adur, H.B. Mali | | | Book | | position of 56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneously—replenishing...of burning region (central or shell burning) and depleting the fuel elsewhere in that region at the same...burning of this fuel then commences outside that region. Table 1 summarizes the burning stages and their...maximum temperatures that have been reached in each region in the preceding hydrostatic burning stages (Table |  | | Report (volume) | | .. 149 Exposure ages and dynamical models of meteorite delivery .......................................first discovered 129Xe excesses in the Richardton meteorite, then wrote that astonishing paper entitled “The...first discovered 129Xe excesses in the Richardton meteorite, then wrote that astonishing paper entitled “The...sector mass spectrometer (Clarke et al. 1969). Meteorite research has made particular demands upon noble...noble gases inherited from the upper mantle source region, which is dominated by olivine and pyroxenes. However |
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