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A palaeomagnetic and petromagnetic study of Upper-Carboniferous, Permian and Triassic sediments, NW Bulgaria

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Summary

In order to obtain basic palaeomagnetic data on Upper Carboniferous, Permian and Triassic sediments collected from the NW Bulgaria, laboratory stability tests were extended from A.C. and thermal treatments to studies of mineral phase changes and to investigations of changes of magnetic anisotropy during laboratory procedures. Laboratory criteria were found which permitted to distinguish samples suitable for palaeomagnetic analyses from those representing rocks totally or almost totally chemically reworked during their history. Palaeomagnetic directions and pole positions derived from Stephanian, Lower Permian and Triassic rocks from the southern margin of the Moesian Platform are compatible with the values obtained for the tectonically stable North-European Platform.

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Authors and Affiliations

  1. Geophysical Institute, Bulgar. Acad. Sci., Sofia

    Peter Nozharov, Nikolai Petkov & Slavcho Yanev

  2. Geophysical Institute, Czechosl. Acad. Sci., Prague

    Vladimír Kropáček

  3. Institute of Applied Geophysics, Prague

    Miroslav Krs & Petr Pruner

Authors
  1. Peter Nozharov
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  2. Nikolai Petkov
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  3. Slavcho Yanev
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  4. Vladimír Kropáček
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  5. Miroslav Krs
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  6. Petr Pruner
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Nozharov, P., Petkov, N., Yanev, S. et al. A palaeomagnetic and petromagnetic study of Upper-Carboniferous, Permian and Triassic sediments, NW Bulgaria. Stud Geophys Geod 24, 252–284 (1980). https://doi.org/10.1007/BF01634136

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  • DOI: https://doi.org/10.1007/BF01634136

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