NASA Technical Reports Server (NTRS) 19980004741: Workshop on Parent-Body and Nebular Modification of Chondritic Materials

82 Pages·8.2 MB·English

by  NASA Technical Reports Server (NTRS)

WORKSHOP ON
PARENT-BODY AND NEBULAR MODIFICATION
OF CHONDRITIC MATERIALS
Edited by
M. E. Zolensky, A. N. Krot, and E. R. D. Scott
Held at
Maui, Hawai'i
July 17-19, 1997
Hosted by
Hawai'i Institute of Geophysics & Planetology
University of Hawai'i
Sponsored by
Lunar and Planetary Institute
University of Hawai'i
National Aeronautics and Space Administration
NASA Integrated Systems Network
Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113
LPI Technical Report Number 97-02, Part 1
LPUTR--97-02, Part 1
Compiled in 1997 by
LUNAR AND PLANETARY INSTITUTE
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as the appropriate acknowledgment of this publication.
This report may be cited as
Zolensky M. E., Krot A. N., and Scott E. R. D., eds. (1997) Workshop on Parent-Body and Nebular Modification of
Chondritic Materials. LPI Tech. Rpt. 97-02, Part 1,Lunar and Planetary Institute, Houston. 71 pp.
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Cover: Olivine with amorphous olivine rims in aprimitive (?) clast in the Ningqiang chondrite.
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LPI Technical Report 97-02, Part 1 iii
Preface
This volume contains abstracts that have been accepted for presentation
at the Workshop on Parent-Body and Nebular Modification of Chondritic
Materials, July 17-19, 1997, in Maui, Hawai'i. The workshop was organized
by co-conveners M. E. Zolensky (NASA Johnson Space Center), A. N. Krot
(University of Hawai "i), and E. R. D. Scott (University of Hawai 'i). Members
of the Scientific Organizing Committee were A. Bischoff (lnstitutj_r
Planetologie, Miinster), P. Cassen (NASA Ames Research Center), B. Fegley
Jr. (Washington University), K. Keil (University ofHawai 'i), J. Kerridge
(University of California-San Diego), H. Nagahara (University of Tokyo),
H. Palme (Universitiit zu Krln), S. Russell (Smithsonian Institution), and
K. Tomeoka (Kobe University).
Logistics and administrative and publications support for the workshop
were provided by the staff of the Lunar and Planetary Institute.

LP1 Technical Report 97-02, Part 1 v
Contents
Thermally Metamorphosed Antarctic CM and CI Carbonaceous Chondrites in
Japanese Collections, and Transformation Processes of PhyUosilicates
J. Akai and S. Tari .............................................................................................................................. 1
Aqueous Alteration of Carbonaceous Chondrites: Evidence for
Preaccretionary Alteration
A.Bischoff.........................................................................................................................2..................
Magnetite in Vigarano: An Iron-57 M6ssbauer Spectroscopy Study
P. A. Bland, M. A. Sephton, A. W. R. Bevan, F. J. Berry,
J. M. Cadogan, and C. T. Pillinger .................................................................................................... 3
Metamorphic Transformations of Opaque Minerals in Chondrites
M. Bourot-Denise, B. Zanda, and R.. Hewins .................................................................................... 5
Unraveling Nebular and Parent-Body Effects in Chondrite Matrixes:
Mineralogical and Compositional Constraints
A. J. Brearley ...................................................................................................................................... 7
Chlorine-bearing Melt Inclusions in Olivine from Unequilibrated
Ordinary Chondrites
J. C. Bridges ....................................................................................................................................... 8
A Search for Accretionary Textures in CM Chondrites
L. Browning ........................................................................................................................................ 9
Use of Oxygen Isotopes to Constrain the Nebular and Asteroidal Modification of
Chondritic Materials
R. N. Clayton .................................................................................................................................... 10
Turbulent Size Selection and Concentration of Chondrule-sized Objects: Reynolds
Number Invariance and Implications
J. N. Cuzzi, R. Hogan, A. Dobrovolskis, and J. Paque ..................................................................... 11
Effect of Revised Nebular Water Distribution on Enstatite Chondrite Formation
K. E. Cyr, M. L. Hutson, and J. 1. Lunine ......................................................................................... 12
Interstellar Hydroxyls in Meteoritic Chondrules: Implications for the Origin of
Water in the Inner Solar System
E. Deloule, J.-C. Doukhan, and F. Robert ....................................................................................... 13
Theoretical Models and Experimental Studies of Gas-Grain Chemistry in the
Solar Nebula
B. Fegley Jr. .................................................................................................................................... 14
vi Workshop on Modification of Chondritic Materials
The Chondrite-Achondrite Transition: Decoupling of Oxygen Isotope and
Geochemical Changes
C. A. Goodrich .................................................................................................................................. 15
Progressive Alteration of CM2 Chondrite Matrixes: Determining Relative
Phyllosilicate Contents by X-Ray Diffraction
M. M. Grady, M. Batchelder, G. Cressey, and M. J. Genge ............................................................ 17
Primitive Matrix Components of the Unique Carbonaceous Chondrite Acfer 094:
Clues to Their Origin
A. Greshake ...................................................................................................................................... 18
Chemical Alteration of Chondrules on Parent Bodies
J. N. Grossman, C. M. O'D. Alexander, andJ. Wang ...................................................................... 19
Thermal Quenching of Silicate Grains in Protostellar Sources
S. L. Hallenbeck, J. A. Nuth, and F. J. M. Rietmeijer ....................................................................... 20
Iron-rich Aureoles as Recorders ofln Situ Aqueous Alteration in the CM
Carbonaceous Chondrites Murray, Murchison, and Allan Hills 81002
N. P. Hanowski and A. J. Brearley ................................................................................................... 21
Transportation of Gaseous Elements and Their Isotopes in a Thermally Evolving
Chondritic Planetesimal
K. Hashizume and N. Sugiura .......................................................................................................... 22
An Experimental Study of Magnetite Formation in the Solar Nebula
23
Y. Hong and B. Fegley Jr ...............................................................................................................
Lightning and Shock Heating as Candidate Processes for Chondrule Formation
M. Hordnyi ........................................................................................................................................ 24
Fayalitic Halos Within Forsterites from Carbonaceous Chondrites
X. Hua and P. R. Buseck ................................................................................................................... 25
Presolar Grains as Tracers of Nebular and Parent-Body Processing of
Chondritic Material
G. R. Huss ......................................................................................................................................... 26
Chronologic Constraints on Secondary Alteration Processes
I. D. Hutcheon .................................................................................................................................. 27
Elemental Redistribution by Aqueous Fluids in Unequilibrated Ordinary
Chondrites: Tieschitz and Semarkona Compared
R. Hutchison, C. M. O'D. Alexander, and J. C. Bridges .................................................................. 27
LPI Technical Report 97-02, Part 1 vii
Anhydrous Alteration of Allende Chondrules in the Solar Nebula
Y. lkeda and M. Kimura ................................................................................................................... 29
The Kaidun Meteorite: Evidence for Pre- and Postaccretionary
Aqueous Alteration
A. V. lvanov, G. Kurat, F. Brandstiitter, L. F. Migdisova,
and N. N. Kononkova ........................................................................................................................ 29
Alteration of Plagioclase-rich Chondrules in CO3 Chondrites: Evidence for
Late-stage Sodium and Iron Metasomatism in a Nebular Environment
R. H. Jones ........................................................................................................................................ 30
A Transmission Electron Microscope Study of the Matrix Mineralogy of the
Leoville CV3 (Reduced-Group) Carbonaceous Chondrite: Nebular and
Parent-Body Features
L. P. Keller ....................................................................................................................................... 31
Relationship Between Anhydrous and Aqueous Alterations in CV3 Chondrites
M. Kimura and Y. Ikeda ................................................................................................................... 33
Mineralogical and Chemical Modification of CV3 Chondrites During
Fluid-assisted Metamorphism in the CV3 Asteroid
A. N. Krot, E. R. D. Scott, and M. E. Zolensky ................................................................................. 34
The Meteorite Parent-Body Alteration Model and the Incompatible Reality
G. Kurat ............................................................................................................................................ 36
The Alteration of Nickel-beating Sulfides During Thermal Metamorphism on
Ordinary Chondrite Parent Bodies
D. S. Lauretta, K. Lodders, and B. Fegley Jr ................................................................................. 36
Nebular and Parent-Body Processes in Chondrites: Labile Trace Elements as
Indicators and Thermometers
M. E. Lipschutz ................................................................................................................................. 38
What Do Enstatite Meteorites Tell Us About the Solar Nebula?
K. Lodders and B. Fegley Jr ........................................................................................................... 39
Fragmental Aggregation in the Nebula: A Basic Nebular Process
G. E. Lofgren .................................................................................................................................... 40
Parent-Body Metamorphism of CV3 Chondrites: Counterarguments Based on
Accretionary Rims and Calcium-Aluminum-rich Inclusions
G. J. MacPherson and A. M. Davis .................................................................................................. 42
viii Workshop on Modification of Chondritic Materials
Evaporation Behavior of Minerals and Silicate Melt in Vacuum and in
Hydrogen Gas
1-1.Nagahara ..................................................................................................................................... 43
Rubidium-Strontium Isotopic Systematics of Chondrules from the Antarctic CV
Chondrites Yamato 86751 and Yamato 86009: Additional Evidence for Late
Parent-Body Modification
N. Nakamura, T. Kani, and G. Kondorosi ........................................................................................ 44
Experimental Study on Formation of Secondary Minerals in Calcium-Aluminum-rich
Inclusions in Carbonaceous Chondrites
K. Nomura and M. Miyamoto ........................................................................................................... 44
_r
Impact Melting, Metal-Silicate Fractionation, and Volatile-Element Mobility on
the L-Chondrite Parent Body
M. D. Norman ................................................................................................................................... 45
Formation of Single-Domain Iron Particles: Implications for the Nebula
J. A. Nuth and P. A. Withey .............................................................................................................. 47
Oxygen-Fugacity Indicators in Carbonaceous Chondrites: Parent-Body Alteration
or High-Temperature Nebular Oxidation?
H. Palme ........................................................................................................................................... 48
Thermodynamic Modeling of Aqueous Alteration in CV Chondrites
M. 1.Petaev and M. V. Mironenko ................................................................................................... 49
Antarctic LL Chondrites
A. M. Reid ......................................................................................................................................... 50
Alteration of Presolar Dust Based on Transmission Electron Microscope/Analytical
Electron Microscope Studies of Chondritic Interplanetary Dust Particles and
Nonequilibrium Simulation Experiments
F. J. M. Rietmeijer, F. GuofeL and d. M. Karner ............................................................................. 51
Correlation of Water of Hydration with Diameter in Tholen E-class and
M-class Asteroids
A. S. Rivkin, D. T. Britt, L. A. Lebofsky, E. S. Howell, and B. E. Clark ........................................... 53
Alteration of Calcium-Aluminum-rich Inclusions: Times and Places
S. S. Russell and G. J. MacPherson .................................................................................................. 54
Evidence from the Bovedy (L3) Chondrite for Impact-generated Chondrules
I. S. Sanders ...................................................................................................................................... 55
LP1 Technical Report 97-02, Part 1 ix
Asteroidal Modification of C and 0 Chondrites: Myths and Models
E. R. D. Scott, A. N. Krot, and L. B. Browning ................................................................................ 56
Nebular or Parent-Body Alteration of Chondritic Material: Neither or Both?
D. W. G. Sears and G. Alcridge ......................................................................................................... 57
Evolved Gas Analysis: A Technique to Study Cosmic Alteration of Chondrites?
Th. Stelzner and K. Heide ................................................................................................................. 58
Volatile-Element Enrichments in Interplanetary Dust Due to Nebular Processes?
T. Stephan, D. Rost, and E. K. Jessberger ........................................................................................ 59
Do Iodine-Xenon Ages Tell Us Anything About the Site of Secondary Alteration?
T. D. Swindle .................................................................................................................................... 60
Aqueous Alteration and Dehydration Processes in the Carbonaceous Chondrites
K. Tomeoka ....................................................................................................................................... 61
Manganese-Chromium Systematics in Sulfides of Unequilibrated Enstatite
Chondrites: Parent-Body vs. Nebular Processing and Implications for
Accretion Times
M. Wadhwa, E. K. Zinner, and G. Crozaz ........................................................................................ 62
Conditions for Forming Calcium-Aluminum-Rich-Inclusion Rim Layers:
Preliminary Experiments
D. A. Wark ........................................................................................................................................ 63
Oxygen Fugacity in the Solar Nebula
d. T. Wasson ...................................................................................................................................... 64
Refractory Forsterite in Carbonaceous Chondrites: An Unaltered Condensate
from the Solar Nebula
S. Weinbruch, H. Palme, B. Spettel, and 1. M. Steele ....................................................................... 65
Fayalitic Olivine in CV3 Chondrite Matrix and Dark Inclusions: A Nebular Origin
M. K. Weisberg and M. Prinz ........................................................................................................... 66
Volatile Trace-Element Composition and Shock in Equilibrated H Chondrites
S. F. Wolf and M. E. Lipschutz ......................................................................................................... 67
A Unique Chondrule Consisting of Forsterite and Clear Glass Groundmass
with Compositional Zoning in Ordinary Chondrites
K. Yanai ............................................................................................................................................ 68
X Workshop on Modification of Chondritic Materials
The History of Metal and Sulfides in Chondrites
B. Zanda, Y. Yu, M. Bourot-Denise, and R. Hewins ......................................................................... 68
Aqueous Alteration of Carbonaceous Chondrites: Evidence for Asteroidal Alteration
70
M. E. Zolensky ..................................................................................................................................