pure and applied geophysics

, Volume 69, Issue 1, pp 158–167 | Cite as

Geomagnetic field intensity during the Plio-Pleistocene derived from the thermo-remanence of porcellanites and palaeo-slags (Czechoslovakia)

  • Miroslav Krs


The present paper deals with the derivation of the intensity of the geomagnetic field in the Plio-Pleistocene, Central Europe. The intensity was derived from the thermo-remanence of porcellanites and palaeo-slags. These rocks represent a common product of intense thermal alteration of loams due to spontaneous combustion of coal seams. Porcellanites and palaeo-slags show outstanding palaeomagnetic properties, their remanent magnetization is of thermo-remanent origin and they were ‘mineralogically stabilized’ under natural conditions in the geological past, during the coal combustion. It was found, that the intensity of the geomagnetic field during the Plio-Pleistocene oscillated about the value of the present-day intensity.


Combustion Europe Natural Condition Coal Seam Field Intensity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    V. Bucha,Archaeomagnetic, and Palaeomagnetic Study of the Magnetic Field of the Earth in the Past 600,000 Years, Nature213 (1967), 1005–1007.Google Scholar
  2. [2]
    R. R. Doell, G. B. Dalrymple,Geomagnetic Polarity Epochs: A New Polarity Event and the Age of the Brunhes-Matuyama Boundary, Science152 (1966), 1060–1061.Google Scholar
  3. [3]
    R. Fisher,Dispersion on a Sphere, Proc. Roy. Soc. [A]217 (1953), 295–305.Google Scholar
  4. [4]
    M. Krs andM. Vánê,Paläomagnetismus der durch Kohlenflözbrände in NW-Böhmen umgewandelten Gesteine und seine geophysikalisch-geologische Bedeutung, N. Jahrb. Geol. Paläontol., Abh. (Stuttgart, in the press).Google Scholar
  5. [5]
    É. Thellier andO. Thellier,Sur l'intensité du champ magnétique terrestre dans le passé historique et géologique, Ann. géophys.15 (1959), 285–376.Google Scholar
  6. [6]
    M. Vánê,Zemni požáry v terciéru severozápadních Čech, Acta Univ. Carol.2 (1961), 119–134.Google Scholar

Copyright information

© Birkhäuser Verlag 1968

Authors and Affiliations

  • Miroslav Krs
    • 1
  1. 1.Institute of Applied GeophysicsPraha-smíchovCzechoslovakia

Personalised recommendations