New palaeomagnetic data from the Betic Cordillera: Constraints on the timing and the geographical distribution of tectonic rotations in southern Spain

--A palaeomagnetic investigation has been carried out at 14 sites on Jurassic red nodular limestones from the central and eastern part of the External Zones of the Betic Cordillera (Subbetic and Prebetic Zones). Progressive thermal demagnetisation of samples from the Subbetic Zone reveals the presen...

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Veröffentlicht in:Pure and Applied Geophysics 2004-03, Vol.161 (3), p.701-722
Hauptverfasser: OSETE, M. L, VILLALAIN, J. J, PALENCIA, A, OSETE, C, SANDOVAL, J, GARCIA DUENAS, V
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Sprache:eng
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Zusammenfassung:--A palaeomagnetic investigation has been carried out at 14 sites on Jurassic red nodular limestones from the central and eastern part of the External Zones of the Betic Cordillera (Subbetic and Prebetic Zones). Progressive thermal demagnetisation of samples from the Subbetic Zone reveals the presence of two stable magnetic components of the natural remanent magnetisation: 1) a secondary Neogene syn-folding component and 2) the original Jurassic magnetisation. As similar characteristics have been reported in Jurassic limestones from the western Subbetic Zone, a widespread remagnetisation event took place within
ISSN:0033-4553
1420-9136
DOI:10.1007/s00024-003-2470-5