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The magnetic effects of brecciation and shock in meteorites: II. The ureilites and evidence for strong nebular magnetic fields

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Abstract

We have examined the magnetic characteristics of representative ureilites, with a view to identify the magnetic effects of shock and to isolate a primary component of the natural remanent magnetization (NRM). As a group, the ureilites show remarkably uniform patterns of magnetic behavior, attesting to a common genesis and history. However, a clearly observed gradation in magnetic properties of the ureilites studied with shock level, parallels their classification based on petrologic and chemical fractionation shock-related trends.

The ureilite meteorites possess a strong and directionally stable NRM. Laboratory thermal modelling of this presumably primordial NRM preserved in Goalpara and Kenna produced reliable paleointensity estimates of order 1 Oe, thus providing evidence for strong early, nebular magnetic fields. This paleofield strength is compatible with values obtained previously from carbonaceous chondrites and supports isotopic evidence for a contemporary origin of these two groups of meteorites in the same nebular region. The mechanism for recording nebular fields, manifestly different in carbonaceous chondrite vs. ureilite meteorites, is thus relatively unimportant: violent collisional shock in ureilites seems to have only partially altered an original magnetization, by preferential removal of its least stable portion.

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References

  1. Berkeley, J. L., Brown IV, H. G., Keil, K., Carter, N. L., Mercier, J. C., and Huss, G.: 1976,Geochim. Cosmochim. Acta 40, 1429.

  2. Brecher, A.: 1972,Proc. CNRS Symp. on the Origin of the Solar System, p. 260.

  3. Brecher, A. and Arrhenius, G.: 1974,J. Geophys. Res. 79, 2081.

  4. Brecher, A., Menke, W. H., and Morash, K. R.: 1974,Proc. 5th Lunar Sci. Conf. Vol.3, pp. 2795–2814.

  5. Brecher, A. and Stein, J.: 1975,OES Trans. AGU 56, 1016.

  6. Brecher, A., and Ranganayaki, R. P.: 1975,Earth Planet. Sci. Letters 25, 57.

  7. Brecher, A., Briggs, P. L., and Simmons, G.: 1975a,Earth Planet. Sci. Letters 28, 37.

  8. Brecher, A., Klonowski, M., and Simmons, G.: 1975b,Lunar Science VI, p. 80.

  9. Brecher, A.: 1976a,Earth Planet. Sci. Letters 29, 131.

  10. Brecher, A.: 1976b,Lunar Science VII, p. 91.

  11. Brecher, A.: 1976c,Proc. Lunar Sci. Conf. 7th, p. 2217.

  12. Brecher, A.: 1977a,Proc. Lunar Sci. Conf. 8th, p. 703.

  13. Brecher, A.: 1977b, in A. H. Delsemme (ed.),Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins, Univ. of Toledo, p. 415.

  14. Brecher, A.: 1977c,Nature 266, 381.

  15. Brecher, A. and Albright, L.: 1977,J. Geomag. Geoelec. 29, 379.

  16. Brecher, A., Fuhrman, M., and Albright, L.: 1977a,Meteoritics 12, 185.

  17. Brecher, A., Stein, J., and Fuhrman, M.: 1977b,The Moon 17, 205.

  18. Brecher, A. and Leung, L.: 1978, Abstract to be presented at Met. Soc. Meeting Sudbury, Ontario, Canada.

  19. Carter, N. L., Raleigh, C. B., and DeCarli, P.: 1968,J. Geophys. Res. 73, 5439.

  20. Cisowski, S. M., Fuller, M., and Wu, Y.: 1976,Lunar Sci. VII, p. 154.

  21. Cisowski, S. M., Dunn, J. R., Fuller, M., Rose, M. F., and Wu, Y. M.: 1976,Proc. Lunar Sci. Conf. 7th, p. 3299.

  22. Clayton, R. N., Mayeda, T. K., Onuma, N., and Shearer, J.: 1976,Geochim. Cosmochim. Acta 40, 1475.

  23. Guskova, Ye G.: 1972,The Magnetic Properties of Meteorites, Nauka Press, Leningrad (108 pp.) and NASA Technical Transl. NASA-TT-F-792.

  24. Jedwab, J.: 1972,Meteoritics 7, 537.

  25. Larson, E. E., Watson, D. E., Herndon, J. M., and Rowe, M. W.: 1973,J. Geomag. Geoelec. 25, 331.

  26. Marvin, U. B. and Wood, J. A.: 1972,Meteoritics 7, 601.

  27. Meadows, A. J.: 1972,Nature 237, 274.

  28. Neuvonen, K. J., Ohlson, B., Papunen, H., Häkli, T. A., and Ramdohr, P.: 1972,Meteoritics 7, 515.

  29. Ramdohr, P.: 1972,Meteoritics 7, 565.

  30. Sonett, C. P. and Herbert, F. L.: 1977, in A. H. Delsemme (ed.),Comets, Asteroids, Meteorites: Interrelations, Evolution and Origins, Univ of Toledo, p. 429.

  31. Vdovykin, G. P.: 1970,Space Sci. Rev. 10, 483.

  32. Vdovykin, G. P.: 1976,Space Sci. Rev. 18, 749.

  33. Wänke, H. Baddenhausen, H., Spettel, B., Teschke, F., Quijano-Rico. M., Dreibus, G., and Palme, H.: 1972,Meteoritics 7, 579.

  34. Wasson, J. T., Chou, C. L., Bild, R. W., and Baedecker, P. A.: 1976,Geochim. Cosmochim. Acta 40 1449.

  35. Wetherill, G. W.: 1975,Ann. Rev. Nuclear Sci. 25, 283.

  36. Wiik H. B.: 1972,Meteoritics 7, 553.

  37. Wlotzka, F.: 1972,Meteoritics 7, 591.

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Brecher, A., Fuhrman, M. The magnetic effects of brecciation and shock in meteorites: II. The ureilites and evidence for strong nebular magnetic fields. The Moon and the Planets 20, 251–263 (1979). https://doi.org/10.1007/BF00907578

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Keywords

  • Remanent Magnetization
  • Thermal Modelling
  • Magnetic Behavior
  • Magnetic Characteristic
  • Magnetic Effect