Meteorite Research

The Symposium 'Meteorite Research' was conceived originally at the second meeting of the UNESCO Working Group on Meteorites, held in Paris October 18-20, 1965, under the chairmanship of Professor J. Orce!' In addition to the Chairman the fol­ lowing were present: Dr. G. Harbottle, Dr. M. H. Hey, Dr. B. H. Mason, Dr. P. M. Millman, Professor K. I. Sztr6kay. Dr. E. M. Fournier d'Albe represented the UNESCO Secretariat. Recommendation No.4 from the minutes of this meeting reads as follows: "The Working Group, in view ofthe need to strengthen international co-operation in meteorite research, asks that the International Atomic Energy Agency be requested to consider the possibility of organizing, in 1968, an interdisciplinary conference on meteorites, in collaboration with UNESCO and the appropriate international scientific organizations." After approval in principle of this recommendation had been secured from various international agencies and unions, plans for the symposium were consolidated at the third and final meeting of the Working Group, held in Paris October 12-14, 1966, the members in attendance being the same as for the second meeting.

Inhalt

Session I Early History of Meteorites.- 1. Nuclear Abundance Rules and the Composition of Meteorites.- 2. Physical Conditions in the Primitive Solar Nebula.- 3. Origin of Meteorites and Planetary Cosmogony.- 4. ? ????????? ???????? ???????????? ? ?????????????? ???????? ????????? ??????? ? ????? ? ????????? ???????????.- 5. Recent Fossil Track Studies bearing on Extinct Pu244 in Meteorites.- 6. ????????? ??????? ??? ??????? ?.- Discussions of Session I 60.- Session II Composition and Structure.- 7. Meteorites and the High-Temperature Origin of Terrestrial Planets.- 8. Study of Trace Element Abundance in Meteorites by Neutron Activation.- 9. Content and Isotopic Composition of Carbon in the Light and Dark Portions of Gas-Rich Chondrites.- 10. Mössbauer Investigation of the Unequilibrated Ordinary Chondrites.- 11. Mössbauer Spectroscopy applied to the Classification of Stone Meteorites.- 12. Isotopic Composition of Lithium in Some Meteorites and the Role of Neutrons in the Nucleosynthesis of the Light Elements in the Solar System.- 13. Determination of Boron, Lithium, and Chlorine in Meteorites.- Discussions of Session II.- Session III Composition and Structure.- 14. The Sharps Chondrite-New Evidence on the Origin of Chondrules and Chondrites. With Analyses by Eugene Jarosewich and Joseph Nelen.- 15. Fractionation of Some Abundant Lithophile Element Ratios in Chondrites.- 16. On the Formation of Chondrules and Metal Particles by 'Shock Melting'.- 17. The Formation of Chondrules and Chondrites and Some Observations on Chondrules from the Tieschitz Meteorite.- 18. The Major-Element Composition of Individual Chondrules of the.- 19. Genesis of the Calcium-Rich Achondrites in Light of Rare-Earth and Barium Concentrations.- 20. The Leoville, Kansas, Meteorite: a Polymict Breccia of Carbonaceous Chondrites and Achondrite.- Discussions of Session III 218.- Session IV Isotope Studies and Chronology.- 21. ??????????????? ???? ? ??????????, ????????? ???????????? ??????, ? ????????????? ??????????.- 22. Cosmic-Ray Produced Radionuclides and Rare Gases near the Surface of Saint-Severin Meteorite.- 23. Cosmic-Ray Produced Radionuclides in the Barwell and Saint-Severin Meteorites.- 24. On the Energy Spectrum of Iron-Group Nuclei as deduced from Fossil-Track Studies in Meteoritic Minerals.- 25. Fossil Tracks in Meteorites and the Chemical Abundance and Energy Spectrum of Extremely Heavy Cosmic Rays.- 26. On the Flux of Low-Energy Particles in the Solar System during the Last 10 Million Years.- 27. Heat Generation in Meteorites during the Early Stage of the Solar System.- 28. Some Stable and Long-Lived Nuclides produced by Spallation in Meteoritic Iron.- Discussions of Session IV 348.- Session V Isotopic Studies and Chronology.- 29. Chlorine-36 and Argon-39 Production Rates in the Metal of Stone and Stony-Iron Meteorites.- 30. 39K(n, p)-Produced 39Ar in Chondrites: New Data and Their Interpretation in Terms of Size, Exposure Age and Orbital Elements.- 31. Radiation Ages of Chondrites.- 32. Evaluation of 53Mn by (n, y) Activation, 26A1 and Special Trace Elements in Meteorites by ?-Coincidence Techniques.- 33. Beryllium-10 in Iron Meteorites, Their Cosmic-Ray Exposure and Terrestrial Ages.- 34.Thermal Histories of Meteorites by the 39Ar-40Ar Method.- 35. The Stony Meteorite Krähenberg. Its Chemical Composition and the Rb-Sr Age of the Light and Dark Portions.- 36. K/Ar-Age Determinations of Iron Meteorites V.- 37. Ages of the Ca-Rich Achondrites.- Discussions of Session V 458.- Session VI Composition and Structure.- 38. The Status of Isotopic Age Determinations on Iron and Stone Meteorites.- 39. Mineralogy, Petrology, and Classification of Types 3 and 4 Carbonaceous Chondrites.- 40. Étude minéralogique de la chondrite C III de Lancé. Comparaison avec d'autres météorites du même groupe.- 41. The Use of Selected-Area Electron Diffraction in Meteorite Mineralogy.- 42. Genetical Interrelations between Ureilites and Carbonaceous Chondrites.- 43. Gas-Chromatographic Mass-Spectrometric Studies on the Isoprenoids and Other Isomeric Alkanes in Meteorites.- 44. Formation of Organic Compounds in Solid Bodies by Solar and Cosmic Proton Bombardment.- Discussions of Session VI 534.- Session VII Orbits.- 45. Astronomical Information on Meteorite Orbits.- 46. Meteorite Radiants and Orbits.- 47. Orbital Clues to the Nature of Meteorite Parent Bodies.- 48. Relationships between Orbits and Sources of Chondritic Meteorites.- 49. Interplanetary Dust.- 50. Photographic Networks for Fireballs.- 51. A Network for Rapid Analysis of Fireball Trajectories.- Discussions of Session VII 623.- Session VIII Composition and Structure.- 52. ????????? ???????? ?????????? ????????? ?????????? ?????.- 53. Phase Relations in the System Cr-Fe-S.- 54. Phase métallique des météorites pierreuses. Étude de l'interdépendance de la composition chimique et des caractères optiques.- 55. Investigations on a Quantitative Mineral-ogical Characterization of Meteorites by Modal Analysis.- 56. The Phosphate Mineralogy of Meteorites.- 57. A Chondritic Inclusion of Unique Type in the Cumberland Falls Meteorite.- 58. Reconstitution de la météorite Saint-Séverin dans l'espace.- Discussions of Session VIII 714.- Session IX Composition and Structure.- 59. The Classification of Iron Meteorites.- 60. Superior Analyses of Iron Meteorites.- 61. Phosphorus in Meteoritic Nickel-Iron.- 62. The Formation of Phosphides in Iron Meteorites.- 63. Phosphide and Carbide Inclusions in Iron Meteorites.- 64. Pre-Terrestrial Deformation Effects in Iron Meteorites.- 65. Dynamically Meteorites.- 66. Shock Ga-Ge Group III Octahedrites.- Discussions of Session IX 838.- Session X Isotope Studies and Chronology.- 67. Rare Gases in Stony Meteorites.- 68. Rare-Gas Measurements in Separate Mineral Phases of the Otis and Elenovka Chondrites.- 69. Short Exposure Ages of Meteorites determined from the Spallogenic 36Ar/38Ar Ratios.- 70. Spallogenic Rare Gases in Taenite separated from Iron Meteorites.- 71. Rare Gases in the Iron and in the Inclusions of the Campo del Cielo Meteorite, El Taco.- 72. The Thermal Release of Rare Gases from Separated Minerals of the Möcs Meteorite.- 73. Distribution and Origin of Primordial Helium, Neon, and Argon in the Fayetteville and Kapoeta Meteorites.- Discussions of Session X 931.- List of Participants.- List of Chairmen.