 | Cuvillier, Priscille, Chaumard, Noël, Leroux, Hugues, Zanda, Brigitte, Hewins, Roger H., Jacob, Damien, Devouard, Bertrand (2018) A TEM study of exsolution in Ca-rich pyroxenes from the Paris and Renazzo chondrites: Determination of type I chondrule cooling rates. Meteoritics & Planetary Science, 53 (3) 482-492 doi:10.1111/maps.13032 | Journal (article/letter/editorial) |
| exsolution in Ca-rich pyroxenes from the Paris and Renazzo chondrites: Determination of type I chondrule cooling...pyroxenes in type I chondrules from the Paris CM and Renazzo CR carbonaceous chondrites in order to provide...carbonaceous chondrites Paris and Renazzo. The Paris CM meteorite contains both moderately and barely...vol% of the chondrite (Hewins et al. 2014). The Renazzo chondrite (CR2) experienced moderate aqueous alteration...chondrules (e.g., Weisberg et al. 1993). For Paris and Renazzo, type I chondrules are abundant and frequently |
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| processes have been invoked previously for other meteorite groups. Rubin (2004) studied 210 equilibrated...1 Thin sections examined in the current study Meteorite Sections Classification Shock stage ALH A77081...extinction indicative of shock-stage S5. The meteorite contains several fine-grained metal–troilite assemblages...of either protoenstatite or high-temperature clinoenstatite and can be a shock indicator (e.g., Hornemann...abundances of phases in acapulcoites and lodranites Meteorite Section Group No. of points ALH A77081 17 acapulcoite |
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| Pergamon Press Ltd. Printed in U.S.A. The CR (Renazzo-type) carbonaceous chondrite group and its implications...isotopic study of eight meteorites, identified as CR (Renazzo-type) chondrites, reveals that they have a set...water to a greater degree than the rest of the meteorite. The overall degree of hydration in CR chondrites...fiamboidal magnetite in Renazzo matrix as being CI-like. It was later shown that Renazzo has a nitrogen isotopic...and CLAYTON, 1978; ROBERT and EPSTEIN, 1982). Renazzo was also found to have an oxygen isotopic composition |
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| thermal metamorphism experienced by the host meteorite. Oxygen-isotope compositions of olivine and low-Ca...correlates with petrologic subtype of a host meteorite (e.g., Krot et al., 2004b). The slight enrichment...very low abundances of presolar grains in this meteorite is possibly due to destruction of the presolar... (1989) concluded that Kakangari is a unique meteorite and the observed differences in Oisotope composition...experienced by chondrules favor preservation of clinoenstatite (e.g., Brearley, 1993). 5. CONCLUSIONS Through |
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| Aubrites Shock effects Asteroidal parent bodies Meteorite breccias Impact melting Sinoite a b s t r a c...impact-melt globules and spherules. No single meteorite possesses all of these features, although many...rocks (Mason, 1966). They all contain abundant clinoenstatite and/or orthoenstatite, typically with very...history (4.50–4.54 Ga ago); only one enstatite-rich meteorite (EH4 Bethune) appears to have been impact heated...develops undulose extinction, planar fractures, clinoenstatite lamellae on (100) (at shock-stage S3) and, |
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| grid for electron microscopy. Large areas of meteorite matrix were scanned and checked for the occurrence...material into which they were mixed prior to meteorite compaction This is to be expected if the diamonds...TOWARD A BETTER UNDERSTANDING OF THE ASTEROID-METEORITE CONNECTION. J. F. Bell 1111, S. Murchiez, N. Izenbergz...sufficient accuracy to enable comparisons with major meteorite types. To achieve the latter goal, NEAR is equipped...address fundamental questions in asteroid and meteorite science. This presentation focuses primarily on |
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| sharp, but irregular interfaces with the host meteorite and have characteristics which suggest that formed...from hot deserts. The 26AI concentration in a meteorite depends upon different parameter like the exposure...analyzed sample and the terrestrial age of the meteorite. Our data contributes to the understanding of...production rate characteristic for the corresponding meteorite class. We do not find extremely low 26AI concentrations...order to reconstruct the irradiation history of a meteorite in detail, it is essential to analyze other cosmogenic |
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| Water-Rich Small Bodies 390 6.5 Primitive Asteroid-Meteorite Matches 394 6.6 Implications for Exploration of...same rate as older craters erode away (due to meteorite and micrometeorite bombardment), at least for...found that the best match for 433 Eros is an OC meteorite that has been altered at the surface of the asteroid...do not go longward of 0.9 mm, and a suggested meteorite analog cannot be identified beyond those generally...existence of polymict breccias in the Earthly meteorite collections. Some regions in the southern hemisphere |
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| YEARS OF TERRESTRIAL RESIDENCE IN THE TATAHOUINE METEORITE. J. A. Barrat', Ph. Gilletz, Th. Heulin3, M. Lesourd4...analysis of the carbonates within the Tatahouine meteorite and the underlying ground confirm their terrestrial...were observed on the external surfaces of the meteorite fragments collected in 1994 and on gravels, gun...bacteria clusters from the soil in which the meteorite samples were embedded. This study emphasizes the...Houston TX 77058, USA. Introduction: Martian meteorite ALH 84001 (ALH) is a brecciated cumulate orthopyroxenite |
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| METEORITE RESEARCH ASTROPHYSICS AND SPACE SCIENCE LIBRARY A SERIES OF BOOKS ON THE RECENT DEVELOPMENTS...Holland VOLUME 12 METEORITE RESEARCH PROCEEDINGS OF A SYMPOSIUM ON METEORITE RESEARCH HELD IN VIENNA...the publisher INTRODUCTION The Symposium 'Meteorite Research' was conceived originally at the second...need to strengthen international co-operation in meteorite research, asks that the International Atomic Energy...discussed ranged from the computer-assisted study of meteorite orbit statistics, through problems of composition |
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| PROFESSOR M. FORNASERI, University of Rome, Rome, Italy Editorial Assistant MME G. PROTAS, C.R.P.G. Nancy-Vandoeuvre...taken from well below the surface of a large meteorite. Typical values of uranium concentrations and...located as close as possible to the outside of a meteorite. separately the ancient P u 2 4 4 / U 2 3 8 ratio...well below the outer surface of the Toluca iron meteorite, as indicated in figure 2(a). In all samples more...time since the beginning of the formation of meteorite parent bodies) and the cooling of phase / to the |
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| Historical Review J. Dorschner Abstract Via meteorite research, mineralogy became the first discipline...turnaround occurred, when the well-witnessed meteorite rain of L’Aigle in 1803 convinced the authorities...popularity among astrophysicists. Further, primitive meteorite and interplanetary dust mineralogy began to play...metals [41, 42]. 2.3 Renunciation from Meteor/Meteorite Analogy As already mentioned, the iron dust model...interstellar grains embedded 4.6 × 109 years ago in the meteorite parent bodies of the forming solar system. Being |
