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

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• 作者：Gunther Kletetschka (1) (2)
  Petr Schnabl (1)
  Kristyna ?ifnerová (1)
  Zuzana Tasáryová (2)
  ?těpán Manda (2)
  Petr Pruner (1)
  
• 关键词：paleomagnetism ; magnetic scanner ; magnetic mineralogy ; amygdales ; magnetic anomalies ; magnetic texture ; Barrandian
• 刊名：Studia Geophysica et Geodaetica
• 出版年：2013
• 出版时间：January 2013
• 年：2013
• 卷：57
• 期：1
• 页码：103-117
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• 作者单位：Gunther Kletetschka (1) (2)
  Petr Schnabl (1)
  Kristyna ?ifnerová (1)
  Zuzana Tasáryová (2)
  ?těpán Manda (2)
  Petr Pruner (1)
  
  1. Institute of Geology, Academy of Sciences of the Czech Republic, v.v.i., Rozvojová 269, Praha 6, Czech Republic
  2. Faculty of Science, Charles University in Prague, Albertov 6, 128 43, Praha 2, Czech Republic
  
• ISSN：1573-1626

文摘

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.