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

0389165 - GLÚ 2013 RIV CZ eng J - Journal Article
Kletetschka, Günther - Schnabl, Petr - Šifnerová, Kristýna - Tasáryová, Z. - Manda, Š. - Pruner, Petr
Magnetic scanning and interpretation of paleomagnetic data from Prague Synform’s volcanics.
Studia geophysica et geodaetica. Roč. 57, č. 1 (2013), s. 103-117. ISSN 0039-3169. E-ISSN 1573-1626
R&D Projects: GA ČR GAP210/10/2351
Institutional support: RVO:67985831
Keywords : paleomagnetism * magnetic scanner * magnetic mineralogy * amygdales * magnetic anomalies * magnetic texture * Barrandian
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 0.752, year: 2013

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.
Permanent Link: http://hdl.handle.net/11104/0218054