Magnetic scanning and interpretation of paleomagnetic data from Prague Synform’s volcanics

Magnetic images have been produced at the distance of 0.1 mm from the polished basaltic thin sections of rocks from Prague Synform in Barrandian area. Three different magnetic textures were seen and when combined with optical imaging could be related to petrological features. The first magnetic text...

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Bibliographic Details
Published in:Studia geophysica et geodaetica 2013, Vol.57 (1), p.103-117
Main Authors: Kletetschka, Gunther, Schnabl, Petr, Šifnerová, Kristýna, Tasáryová, Zuzana, Manda, Štěpán, Pruner, Petr
Format: Article
Language:English
Subjects:
Anisotropy
Atmospheric Sciences
Basalt
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
Paleomagnetism
Rocks
Silurian
Structural Geology
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Summary:Magnetic images have been produced at the distance of 0.1 mm from the polished basaltic thin sections of rocks from Prague Synform in Barrandian area. Three different magnetic textures were seen and when combined with optical imaging could be related to petrological features. The first magnetic texture revealed that most of the magnetic signature is localized within the amygdales formed later after the basalts became part of the sedimentary sequence. The second texture showed that the basaltic body contains large grain size distribution of magnetic carriers possibly with variable viscous magnetizations. The third texture suggested a presence of magnetic anisotropy of igneous origin. Such textural magnetic information along with the paleomagnetic characteristics of the basaltic rocks of Silurian age constrained the overall geological interpretation.
ISSN:0039-3169
1573-1626
DOI:10.1007/s11200-012-0723-4