 | | Journal (article/letter/editorial) | | Tswtkov, V.I. The Scattering of the Tsarev Stony Meteorite Shower Meteoritika, 1984, Issue 43, pp. 3-8 Information...Information about the specimens of the Tsarev meteorite, in particular those found by the 1982 expedition...have been found who observed the fall of the meteorite Tsarev in 1922. Five illustrations, sixteen references...L. The Conditions of the Fall of the Chinga Iron Meteorite Meteoritika, 1984, Issue 43, pp. 9-15 Based...concluded that the Chinga meteorite felI in the form of an iron meteorite shower. Five illustrations |  | | Journal (article/letter/editorial) | | SOO16-7037( 96)00054-3 Ion microprobe studies of Efremovka CAIs: II. Potassium and 41Ca in the early Solar...potassium isotope composition of refractory phases in Efremovka CAls has been measured by an ion microprobe. Extensive...with high Ca/K ratios (>3 X 105) in all the four Efremovka CAls analysed in this study. The excess 4’K in...0.14) X lo-’ at the time of formation of the Efremovka CAls. We have considered several processes that...best one from plausibility considerations. The Efremovka CAls with excess 4’K also have excess 26Mg that |  | | Journal (article/letter/editorial) | | 0016-7037/94/$6.00 + .Ml Ion microprobe studies of Efremovka CAIs: I. Magnesium isotope composition J. N. GOSWAMI...Ca-Al-rich refractory inclusions (CAB) from the Efremovka CV3 chondrite are analysed for their magnesium...localized in nature. The pristine nature of the Efremovka CAB, as evident from the lack of secondary alteration...magnesium isotopes between these two phases. The Efremovka data are suggestive of a relatively homogeneous...less abundant. The refractory inclu~ons in the Efremovka CV3 chondrite are, however, an exception in this |  | | Journal (article/letter/editorial) | | Carbonaceous chondrites, the most primi- tive of all meteorite types, have solar-like compositions, and contain...examples of which include the unique Efremovka meteorite in the Meteorite Collection of the Russian Academy... Ca–Al-RICH INCLUSIONS IN CARBONACEOUS CHONDRITES 389 Meteorite matrix Melilite Wark–Lovering rim Fine-grained...carbonaceous chondrite and FTA CAI 33E from the Efremovka (CV3) chondrite, containing UR CAIs 3N-24 and...NWA 3118 (CV3) meteorite; (b) fluffy type A (FTA) CAI 33E from Efremovka (CV3) meteorite; (c) type B CAI |  | | Journal (article/letter/editorial) | | calcium-aluminum-rich inclusions from the reduced CV3 chondrite Efremovka ALEXANDER N. KROTI*, ALEXANDER A. ULYANOV1,2,...type B CAI (E48) from the reduced CV3 chondrite Efremovka, which is less altered than Allende. In contrast...contrast to the Allende accretionary rims, those in Efremovka consist of coarse-grained ( 2 0 4 0 ym), anhedral...accretionary rims. We infer that accretionary rims in Efremovka are more primitive than those in Allende and formed...andradite, wollastonite, and hedenbergite from the Efremovka rims may indicate that these rims sampled different |  | Kawasaki, Noriyuki, Park, Changkun, Sakamoto, Naoya, Park, Sun Young, Kim, Hyun Na, Kuroda, Minami, Yurimoto, Hisayoshi (2019) Variations in initial 26Al/27Al ratios among fluffy Type A Ca–Al-rich inclusions from reduced CV chondrites. Earth and Planetary Science Letters, 511. 25-35 doi:10.1016/j.epsl.2019.01.026 | Journal (article/letter/editorial) | | fluffy Type A CAIs, from the reduced CV chondrites Efremovka and Vigarano were obtained by in situ Al–Mg isotope...was distributed homogeneously in the CAI forming region. Alternatively, the observed variations in (26...heterogeneous distributions of 26 Al in the forming region. © 2019 Elsevier B.V. All rights reserved. 1....gas. FGIs in the reduced CV chondrites, such as Efremovka and Leoville, preserve * Corresponding author...homogeneously distributed throughout at least the region of the Solar System where “canonical” CAIs in CV |  | | Report (chapter) | | University Library on July 13, 2015 The history of meteorite age determinations J.R. D E L A E T E R Department...Patterson measured the isotopic composition of lead in iron meteorites in 1956, to produce an age of 4550 Ma...nucleosynthesis of elements in stars and the formation of meteorite parent bodies, to be determined. The last 40 years...evidence of clustering of exposure ages in some meteorite classes, which provide information on the frequency...systems in 'finds', compared with corresponding meteorite 'falls', give their terrestrial age on the Earth's |  | | Journal (article/letter/editorial) | | 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...diversity of carbonaceous asteroids and to relate meteorite and asteroid types (e.g.,Bell et al., 1989). ...Y-86751 find 200 Reduced Subgroup find Arch 990 s3 Efremovka find 21,000 s4 Leoville find 8100 s3 Vigarano...(data from McSween, 1977b). Symbols as follows: Efremovka (Efr), Leoville (Leo), Vigarano (Vig), Allende |  | 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) | | 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...unequilibrated ordinary chondrites, 60(16): 3115 Chromium iron oxides, lateritic, 60( 21): 4279 jarosite, Cr analog...surface chemistry, dissolution, 60( 16): 3067 Efremovka, meteorite K, isotope composition, 60( 10): 1823 England...molecular statics, 60(9): 1553 0, isotope composition, iron formation, Archean, India, 60( 17): 3291 surface |  | Defouilloy, C., Cartigny, P., Assayag, N., Moynier, F., Barrat, J.-A. (2016) High-precision sulfur isotope composition of enstatite meteorites and implications of the formation and evolution of their parent bodies. Geochimica et Cosmochimica Acta, 172. 393-409 doi:10.1016/j.gca.2015.10.009 | Journal (article/letter/editorial) | | features that distinguish them from any other meteorite groups. They have a distinct mineralogy, with...and 2 for the aubrites (one for the Shallowater meteorite, and another parent body for all the other aubrites)...from two museums) that were analyzed from this meteorite (d34S = 1.350‰ vs. d34S = +0.215‰). This difference...First analyses on undiscriminated powder from the meteorite gave a bulk composition of d34S = 0.517 ± 0.06‰...reproducible between different replicates of a same meteorite with a difference of less than 0.2‰ in d34S, with |  | Tang, Haolan, Liu, Ming-Chang, McKeegan, Kevin D., Tissot, Francois L.H., Dauphas, Nicolas (2017) In situ isotopic studies of the U-depleted Allende CAI Curious Marie : Pre-accretionary alteration and the co-existence of 26 Al and 36 Cl in the early solar nebula. Geochimica et Cosmochimica Acta, 207. 1-18 doi:10.1016/j.gca.2017.03.001 | Journal (article/letter/editorial) | | Backscattered electron images of the Curious Marie CAI. The region outlined in panel (A) is shown in greater detail...sources for thermal processing in an early accreted meteorite parent body. Numerical simulations (Herndon and...6, it is clear that the size of this subsurface region, relative to that of the entire body, is significantly...mineralogy and chemical composition of the host meteorite. The presence of ferrous olivine in the dark inclusions...been produced in abundance in such a cold nebular region by solar irradiation at that time because intervening |  | 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...Solar System. 2.1.4. 60Fe–60Ni (T1/2 1.5 Myr) Iron-60 is a neutron-rich nuclide that is difficult to |  | | Journal (article/letter/editorial) | | scenarios. We demonstrate that irradiation during meteorite transit from the asteroid belt to Earth has a...Nakashima et al. (2010) for a halite from the Zag meteorite. There are many unanswered questions concerning...36Cl production by GCRs after compaction of the meteorite parent bodies. However, all cases studied so far...timeline after, for example, the parent bodies of the iron meteorites would have already formed and Mars had...CAIs were even transported to the cometary-forming region. Whether this process was the X-wind scenario or |  | | 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...metal. Some nuggets consist of intergrowths of an iron oxide, fayalite, anorthite, and sulfide. Commonly |  | HERZOG, Gregory F., CAFFEE, Marc W., FAESTERMANN, Thomas, HERTENBERGER, R., KORSCHINEK, Gunther, LEYA, Ingo, REEDY, Robert C., SISTERSON, J. M. (2011) Cross sections from 5 to 35 MeV for the reactions natMg(3He,x)26Al, 27Al(3He,x)26Al, natCa(3He,x)41Ca, and natCa(3He,x)36Cl: Implications for early irradiation in the solar system. Meteoritics & Planetary Science, 46 (10) 1427-1446 doi:10.1111/j.1945-5100.2011.01236.x | Journal (article/letter/editorial) | | natCa(3He,x)41Ca, and natCa(3He,x)36Cl in the energy region from approximately 5–35 MeV. The rates of these...sections 1429 and natCa(3He,x)36Cl in the energy region from about 5 to 35 MeV. Targets containing the...in the insoluble phases occurred as oxides, with iron as Fe2O3. Some properties of the target materials...Ni ‘‘catcher’’ foil. For energies up to 40 MeV in iron targets, however, such losses have been shown to...x)26Al and 26Mg(3He,x)26Al rise accordingly. In the region of maximum cross sections, approximately 7–12 MeV |  | | 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...were measured using ferromagnetic resonance (FMR). Iron oxide and metal abundances were determined by Mossbauer...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 |  | | Book | | LL3.0 chondrite, constructed from magnesium and iron Ka x-ray maps provided by Denton S. Ebel of the...almost free of iron, and appear red. Type II chondrules are composed of magnesium and iron silicates and...fine-grained iron-rich matrix between chondrules is light blue in color, and metal and iron sulfides appear...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 |  | | 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...of a deep-seated rock by glacier action, or a meteorite impact, or exposing a previously shielded rock...exposed on the surface due to the impact of a meteorite; (iv) cosmic ray shielded rocks exposed by glacier...exposed due to the impact of the Canyon Diablo iron meteorite (Nishiizumi et al 1991b), producing the Meteor |  | | 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 |  | | Book | | and silicon burning to proceed. Collapse of an iron core devoid of further nuclear energy then gives...56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions (zirconium...oxygen, and silicon burning, until finally a core of iron is produced, from which no more energy can be extracted...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneously—replenishing...25M( from birth as hydrogen burning stars until iron core collapse (Table 1). In general, the trajectories |  | | 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...of the Meteoritical Society: Abstracts 5022 METEORITE IMPACT CRATERS IN SOUTH AMERICA: A BRIEF REVIEW...discoveries. The following possible and confirmed meteorite impact structures have been reported for this |  | | Journal (article/letter/editorial) | | branching of the s-process path in the 184 F A F 188 region may be responsible for a departure from the steady-flow...the production of the stable nuclides heavier than iron. Two of them rely on neutron captures. In the so-called...high that the material is pushed deep inside the region of very neutron-rich b-unstable nuclei. If the...local approximation for the s-process in the Os region, and implications for the 187 Re– 187Os cosmochronology...1987. A search for evidence of extinct 205 Pb in iron meteorites. Lunar Planet. Sci. 18, 165. Clayton |  | | 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...Microprobe analyses for some of them. Dating of seven iron meteorites from the Sahara using isotopes of 36Cl...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 |  | | Journal (issue) | | conundrum while analysing the Efremovka meteorite found in Kazakhstan in 1962. It contains several c...team found that the minerals trapped within the meteorite had two distinct D/H ratios. Some components had...hydrogen gas. Other minerals containing oxidised iron had higher D/H ratios, indicating they had encountered...encountered traces of ESO / L. CA LÇA DA Meteorite evidence: Earth was born with its water Two black...the large quantities of dust that obscure this region in visible light, radio waves reveal a scene teeming |
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