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| Coupled organic synthesis and mineral alteration on meteorite parent bodies Mitch SCHULTE1* and Everett SHOCK2...Moffett Field, California 94035, USA of Geological Sciences and Department of Chemistry and Biochemistry, Arizona...Abstract–The hypothesis that the soluble fraction of the organic compounds present in carbonaceous chondrite...chondrite meteorites was formed during aqueous alteration of the parent body was tested with masstransfer, reaction-path...these calculations, we start with likely compositions of the original parent body and asteroidal fluids that |
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| http://meteoritics.org Petrography of refractory inclusions in CM2.6 QUE 97990 and the origin of melilite-free spinel...chondrites Alan E. RUBIN Institute of Geophysics and Planetary Physics, University of California, Los Angeles,...(predominantly Mg-Fe serpentine); several contain small grains of perovskite. In addition to phyllosilicate, the most...most abundant inclusions in QUE 97990 consist mainly of spinel-pyroxene (35%), followed by spinel (20%),...No inclusions contain melilite. Aqueous alteration of refractory inclusions transforms some phases (particularly |
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| chondrites D. J. BARBER Physics Department% University of Essex. Colehester CO4 3SQ, U.K Abstract---TEfvi...the phases comprising the matrix of carbonaceous chondrites Murchison, Cold Bokkeveld, Nawapali and Cochahamba...wide variety of phyllosilicate morphologies occurs in each. Very small crystals and clasts of olivine. pyrovene...intimately with the phyllosilicates. lntergrowths of carbonates and sulfides within the phyllosilicates...morphologies of the larger phyllosilicate crystals correlate broadly with these variations. Small cry&& of sodium |
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| Temperatures of aqueous alteration and evidence for methane generation on the parent bodies of the CM chondrites...John M. Eiler Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena...alteration of primitive meteorites was among the earliest geological processes during the evolution of our solar...‘Clumped-isotope’ thermometry of carbonates in the CM chondrites, Cold Bokkeveld, Murray, and Murchison, demonstrates...with d18OVSMOW of 2.0‰ to 8.1‰ and d17OVSMOW of 0.1‰ to 3.0‰. The d13CVPDB values of these carbonates |
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| content Reviews Inc. All rights reserved MATRICES OF CARBONACEOUS Annu. Rev. Earth Planet. Sci. 1993...METEORITES Peter R. Buseck and Xin Hual D epartm ents of G eology and Ch emistry, Arizona State University...eftovers and ar e th us inval uabl e r ecord ers of som e of th e old es t and b est kept s ecr ets regarding...early history o f the solar system . With a U/Pb ag e of 4.5 6 x 1 0 9 y ears, th ey are also th e old est...and even pr ec ed ed th e solar n eb ula. As relics of mat erial that form ed th e sun and planets, th ey |
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| Mineral-Chemistry, and Composition of the Murchison (C2) Meteorite LOUIS H. FUCHS, EDWARD OLSEN, and...PUBLICATIONS OF THE SMITHSONIAN INSTITUTION The emphasis upon publications as a means of diffusing knowledge...knowledge was expressed by the first Secretary of the Smithsonian Institution. In his formal plan for the...publish a series of reports, giving an account of the new discoveries in science, and of the changes made...made from year to year in all branches of knowledge.” This keynote of basic research has been adhered to |
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| LECTURE, 1986 J. ZUSSMAN Department of Geology, University of Manchester, Manchester M13 9PL Abstract...in a great variety of mineralogical and petrological contexts, The development of such applications over...give a rather broad review of the very wide range of useful applications of electron microscopy to Earth...particular. An illustration of this range is provided in Table 1 which lists many aspects of mineralogy that have...main mineral groups have been subjected to some sort of electron microscopic study by now. The grouping in |
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| JOHNSON* and MARTIN PRINZ Department of Mineral Sciences, American Museum of Natural History, New York, NY 10024-5192...electron microprobe to provide a better understanding of the aqueous processes that affected carbonaceous...in CI chondrites display the compositions expected of stable phases formed at low temperatures. Dolomites...for the first time in five members of the group, have small amounts of excess Ca which may reflect metastable...metastable growth. The distribution of Fe between dolomite and coexisting serpentine differs in the two chondrite |
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| abundance in the Tagish Lake meteorite from TGA and IR spectroscopy: Evaluation of aqueous alteration Cosette...Pierre BECK2 1 Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences...we evaluate the extent of aqueous alteration among five pristine specimens of the ungrouped Tagish Lake...to be reliable methods for determining the extent of aqueous alteration among different carbonaceous chondrites...TL4 and TL10a into the known alteration sequence of TL5b < TL11h < TL11i (Herd et al. 2011; Blinova et |
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| Equilibrium fluid, rock, and gas compositions, and fate of antifreezes and radionuclides Marc Neveu a,⇑, Steven...Steven J. Desch a, Julie C. Castillo-Rogez b a School of Earth and Space Exploration, Arizona State University...b Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA Received 9 November...22 June 2017 Abstract The geophysical evolution of many icy moons and dwarf planets seems to have provided...or consumption of antifreeze compounds, which affect the persistence and abundance of cold liquid; and |
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| MICHAEL E. ZOLENSKY 3 ~Department of Geological Sciences, University of Tennessee, Knoxville, TN 37996-1410...Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii...parameters are proposed to determine the relative extent of alteration in CM chondtites. The mineralogic alteration...the relative progress of coupled substitutions in the progressive alteration of cronstedtite to Mg-serpentine...increases with increasing alteration. To calculate values of this index, an algorithm has been developed to estimate |
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| Abstract-The texture and modal composition of fourteen carbonaceous chondrites of the CM group were studied in detail...detail to unravel the origin of their various components and the evolution of their parent body (ies). The...The analysis and “mapping” of complete thin sections by scanning electron and optical microscopy revealed...“primary accretionary rock” are interpreted as products of accretion processes in the solar nebula. An origin...brecciation of variable intensity except for Yamato 791198, which is composed entirely of a primary accretionary |
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| EXPLORATION Edited by NEYDA ABREU Associate Professor of Geosciences and Mathematics The Pennsylvania State...© 2018 Elsevier Inc. All rights reserved. No part of this publication may be reproduced or transmitted...methods they should be mindful of their own safety and the safety of others, including parties for whom...professional responsibility. To the fullest extent of the law, neither the Publisher nor the authors, contributors...as a matter of products liability, negligence or otherwise, or from any use or operation of any methods |
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| USA. Abstracts DOES PRESOLAR SIC RETAIN A RECORD OF GRAIN PROCESSING IN THE INTERSTELLAR MEDIUM? c.M...cosmic ray exposure ages of eight presolar S i c size fractions from Murchison increase with size from...although the origin of these gases (from the He shell of AGB stars [ 11) is independent of the cosmogenic...demonstrates that the apparently correlated behavior of 22Ne, 4He, and cosmogenic 2lNe is understandable...the exposure ages reflect the typical lifetime of grains of different sizes in the ISM. It is assumed that |
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| Society, 1991. Printed in USA Abstracts of the 54th Meeting of the Meteoritical Society Monterey, California...California, 21-26 July 1991 Determination of trace elements in extraterrestrial materials by ICPI MS. A...Adams' and M. W. Rowe.' 'Department of Chemistry, University of Antwerp, Wilrijk, Belgium. 'Department...Station, TX 77843, USA. 'Department of Astronomy, University of Washington, Seattle, WA 98195, USA. Carbonaceous...isotopic analysis of Mg isotopes. We present a progress report of the isotopic composition of Mg in particles |
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| liil1iil!l1l1111lml 3 3073 00041879 b ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES EDITORIAL COMMITTEE...GEORGE W. WETHERILL Responsible for the organization of Volume 21 (Editorial Committee, 1991) ARDEN L. ALBEE...DA YID A. COUZENS CHERI D. WALSH ANNUAL REVIEW OF EARTHAND PLANETARY SCIENCES VOLUME 21, 1993 GEORGE...Carnegie Institution of Washington ARDEN L. ALBEE, Associate Editor California Institute of Technology KEVIN...RIGHTS RESERVED. The appearance of the code at the bottom of the first page of an article in this serial indicates |
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| 1998. Printed in USA. Abstracts CARBON CHEMISTRY OF SUEVITES AND TARGET ROCKS AT THE RIES CRATER, GERMANY...extensively described [ l ] . As part of a continuing study of the distribution of impact diamonds within the Ries...number of impact lithologies in order to characterize the C content and isotopic composition of the target...breccia) derived from them. To study the contribution of different target rock litbologies, such as sedimentary...complex, to the composition of the diamonds and S i c in suevites, samples of lithic fragments and glass |
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| G Model CHEMER-25420; No. of Pages 61 ARTICLE IN PRESS Chemie der Erde xxx (2017) xxx–xxx Contents...Chi Ma c a Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles...90095-1567, USA Institute of Geophysics and Planetary Physics, University of California, Los Angeles,...90095-1567, USA c Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena...meteorites can be categorized as having formed by a myriad of processes that are not all mutually distinct: (1) |
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| McMahon Editors Prebiotic Chemistry and the Origin of Life Advances in Astrobiology and Biogeophysics...interdisciplinary fields of astrobiology and biogeophysics. This encompasses all aspects of research into the...the origins of life - from the creation of matter to the emergence of complex life forms - and the study...study of both structure and evolution of planetary ecosystems under a given set of astro- and geophysical...geophysical parameters. The methods considered can be of theoretical, computational, experimental and observational |
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| METEORITE MINERALOGY Meteorites are fascinating cosmic visitors. Using accessible language, this book...history of mineralogy and meteorite research, summarizes the mineralogical characteristics of the myriad...myriad varieties of meteorites, and explains the mineralogical characteristics of Solar System bodies visited...visited by spacecraft. Some of these bodies contain minerals that do not occur naturally on Earth or in...– from condensation in the expanding atmospheres of dying stars to crystallization in deep-seated magmas |
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| y cacti Genetic Takeover is about the origin of life on the Earth. It is a scientific detective story...outcome. Its clues are in the nature of living things; in the chemistry of crystals and molecules; in geochemical...processes that can be seen now in operation. One of the preliminary deductions is that those very first... There follows the idea that the component parts of these starter organisms were minute mineral crystals...the base of life now. The startling conclusion is that our first ancestors were literally made of clay. |
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| U.S. DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY THE FORD-FLEISCHER FILE OF MINERALOGICAL REFERENCES...standards. Dept. Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington...Ford-Fleischer File of Mineralogical References 1982-1987 Inclusive In 1916, Prof. W.E. Ford of Yale University...just published the Third Appendix to Dana's System of Mineralogy, 6th Edition, began to plan for the 7th...contained data that should be considered in the revision of the 6th Edition. The file was maintained in duplicate |
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| Abstracts 5203 EXPERIMENTAL STUDY OF THE MECHANISMS OF FORMATION OF NANOSULFIDES IN COMET WILD 2 N. M...State DuBois. E-mail: nma12@psu.edu. 2University of New Mexico, 3 Astrochemistry Laboratory – Goddard...Introduction: NASA’s Stardust mission flew through the coma of comet 81P/Wild 2 and collected its freshly ejected...types of tracks (A, B, and C) have been distinguished [2]. Particles extracted from the walls of the bulbous...bulbous part of type B tracks and type C tracks are Si-rich glass blobs with numerous nano-particles |
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| U.S. DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY THE FORD-FLEISCHER FILE OF MINERALOGICAL REFERENCES...editorial standards 1983 The Ford-Fleischer File of Mineralogical References 1981-1982 Inclusive by Michael...W.E. Ford of Yale University, having just published the third Appendix to Dana's System of Mineralogy...contain data that should be considered in the revision of the 6th Edition. He maintained the file in duplicate...Frondel there would have the main burden of the revision. A number of assistants were hired for the project |
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| 1.01 Origin of the Elements J. W. Truran, Jr. and A. Heger University of Chicago, IL, USA 1.01.1...formed. The mass fraction of our solar system (formed ,4.6 Gyr ago) in the form of heavy elements is ,1.8%...enriched (Edvardsson et al., 1993). It is the processes of nucleosynthesis operating in stars and supernovae...will confine our attention to three broad categories of stellar and supernova site with which specific nucleosynthesis... The first two of these sites are the straightforward consequence of the evolution of single stars, while |
