Article | Published:

New evidence for extraordinarily rapid change of the geomagnetic field during a reversal

Abstract

Palaeomagnetic results from lava flows recording a geomagnetic polarity reversal at Steens Mountain, Oregon suggest the occurrence of brief episodes of astonishingly rapid field change of six degrees per day. The evidence is large, systematic variations in the direction of remanent magnetization as a function of the temperature of thermal demagnetization and of vertical position within a single flow, which are most simply explained by the hypothesis that the field was changing direction as the flow cooled.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Baksi, A. K. Geophys Res. Lett. 20, 1607–1610 (1993).

  2. 2

    Watkins, N. D. Geophys. J. R. astr. Soc. 17, 121–149 (1969).

  3. 3

    Mankinen, E. a., Prévot, M., Grommé, C. S. & Coe, R. S. J. geophys. Res. 90, 10393–10416 (1985).

  4. 4

    Prévot, M., Mankinen, E. A., Grommé, C. S. & Coe, R. S. Nature 316, 230–234 (1985).

  5. 5

    Prévot, M., Mankinen, E. A., Coe, R. S. & Grommé, C. S. J. geophys. Res. 90, 10417–10448 (1985).

  6. 6

    Coe, R. S. & Prévot, M. Earth planet. Sci. Lett. 92, 292–298 (1989).

  7. 7

    Ade-Hall, J. M., Palmer, H. C. & Hubbard, T. P. Geophys. J. R. astr. Soc. 24, 137–174 (1971).

  8. 8

    Shaw, H. R., Hamilton, M. S. & Peck, D. L. Am. J. Sci. 277, 384–414 (1977).

  9. 9

    Jaeger, J. C. in Basalts, the Poldervaart Treatise on Rocks of Balsaltic Composition Vol. 2 (eds Hess, H. H. & Poldervaart, A.) 503–536 (Interscience, New York, 1967).

  10. 10

    Langel, R. A. in Geomagnetism Vol. 1 (ed. Jacobs, J. A.) 249–512 (Academic, London, 1987).

  11. 11

    Uyeda, S., Fuller, M. D., Belshé, J. C. & Girdler, R. W. J. geophys. Res. 68, 279–291 (1963).

  12. 12

    Stacey, F. D. & Banerjee, S. K. The Physical Principles of Rock Magnetism (Elsevier, Amsterdam, 1974).

  13. 13

    Dunlop, D. J. J. geophys. Res. 91, 9569–9584 (1986).

  14. 14

    Bolshakov, A. S. & Shcherbakova, V. V. Izvestiya, Phys. Solid Earth 15, 111–116 (1979).

  15. 15

    Dodson, M. H. & McClelland-Brown, E. J. geophys. Res. 85, 2628–2637 (1980).

  16. 16

    Camps, P., Prévot, M. & Coe, R. S. C.r. Acad. Sci., Paris 320, Ser. IIa (9) (in the press).

  17. 17

    Audunsson, H. & Levi, S. J. geophys. Res. 93, 3480–3496 (1988).

  18. 18

    Stasiuk, M. V., Jaupart, C. & Sparks, R. S. J. Geology 21, 335–338 (1993).

  19. 19

    Kristjansson, L. Geophys. J. R. astr. Soc. 80, 57–71 (1985).

  20. 20

    Bogue, S. W. & Merrill, R. T. A. Rev. Earth planet. Sci. 20, 181–219 (1992).

  21. 21

    Starchenko, S. V. & Shcherbakov, V. P. Dokl. Akad. Nauk. SSSR 321, 69–74 (1992).

  22. 22

    Runcorn, S. K. Trans. Am. geophys. Un. 36, 191–198 (1955).

  23. 23

    McDonald, K. L. J. geophys. Res. 62, 117–141 (1957).

  24. 24

    Constable, S. J. Geomag. Geoelect. 45, 707–728 (1993).

  25. 25

    Bahr, K., Olsen, N. & Shankland, T. J. Geophys. Res. Lett. 20, 2937–2940 (1993).

  26. 26

    Schultz, A., Kurtz, R. D., Chave, A. D. & Jones, A. G. Geophys. Res. Lett. 20, 2941–2944 (1993).

  27. 27

    McLeod, M. G. J. geophys. Res. 99, 13577–13590 (1994).

  28. 28

    Shankland, T. J., Peyronneau, J. & Poirier, J.-P. Nature 366, 453–455 (1993).

  29. 29

    Li, X. & Jeanloz, R. J. J. geophys. Res. 95, 5067–5078 (1990).

  30. 30

    Li, X. & Jeanloz, R. J. J. geophys. Res. 96, 6113–6120 (1991).

  31. 31

    Backus, G. E. Geophys. J. R. astr. Soc. 74, 713–746 (1983).

  32. 32

    Gubbins, D. & Roberts, P. H. in Geomagnetism Vol. 2 (ed. Jacobs, J. A.) (Academic, London, 1987).

  33. 33

    Roberts, R. G. Geophys. J. R. astr. Soc. 78, 547–572 (1984).

  34. 34

    Roberts, R. G. Geophys. J. R. astr. Soc. 85, 583–600 (1986).

  35. 35

    Schultz, A. & Larsen, J. C. Geophys. J. R. astr. Soc. 88, 733–762 (1987).

  36. 36

    Stacey, F. D. Physics of the Earth (Brookfield, Brisbane, 1992).

  37. 37

    Jeanloz, R. A. Rev. Earth planet. Sci. 18, 357–386 (1990).

  38. 38

    Fisher, R. A. Proc. R. Soc. A217, 295–305 (1953).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.