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Morphology of the Youngest Little Volcanoes in Western Bohemian Massif

  • Jan Mrlina
Chapter
Part of the World Geomorphological Landscapes book series (WGLC)

Abstract

The two little volcanoes, Komorní hůrka and Železná hůrka , are the youngest volcanoes in the western part of the Bohemian Massif, the principal regional geological unit of the Central Europe. The two volcanoes do not impress by their height, or complex petrological composition, but rather by their age uniqueness, as the dating results vary between 100,000 and 450,000 years. There are numerous other Cenozoic volcanoes in the western part of the Bohemian Massif, but they range between 31 and 8 million years. From this perspective, the two youngest ones prove that after certain break in volcanic activity since 8 million years ago, a new phase of “recent” volcanism has occured. Nowadays, we can still observe some ongoing signs of magmatic activity, e.g. many sites with intensive CO2 degassing, mofettes , hot and cold mineral water springs including a small hot geysir , and relatively significant earthquake swarms with frequent repetition and magnitudes up to M4.5 in the nearby region of the Cheb Basin and surroundings. The little volcanoes were, anyway, a subject of investigation for centuries. The most famous is the research performed by J.W. Goethe , a worldwide known poet and scientist. We have, moreover, recently discovered the only Quaternary maar in the Bohemian Massif by geophysical surveying in the near vicinity of Železná hůrka.

Keywords

Volcanism Morphology West Bohemia Geodynamics 

References

  1. Bräuer K, Kämpf H, Koch U, Strauch G (2011) Monthly monitoring of gas and isotope compositions in the free gas phase at degassing locations close to the Nový Kostel focal zone in the western Eger Rift, Czech Republic. Chem Geol 290:163–176CrossRefGoogle Scholar
  2. Fischer T, Horálek J, Hrubcová P, Vavryčuk V, Bräuer K, Kämpf H (2014) Intra-continental earthquake swarms in West Bohemia and Vogtland: A review. Tectonophysics 611:1–27CrossRefGoogle Scholar
  3. Gottsmann J (1999) Tephra characteristics and eruption mechanics of the Komorni hurka Hill scoria cone, Cheb Basin. Czech Repub Geolines 9(1999):35–40Google Scholar
  4. Hradecký P (1994) Volcanology of Železná and Komorní hůrka in Western Bohemia. Věst. Čes. geol. Úst. 69(2):89–92Google Scholar
  5. Mrlina J, Kämpf H (2012) Quaternary magmatic activity—Železná hůrka scoria cone and Mytina maar, West Bohemia. State of geomorphological research in 2012. Field trip guide (Štěpančíková-Peterek-Marek, Edits.), Sokolov 18.-20.4.2012, p. 13–15Google Scholar
  6. Mrlina J, Kämpf H, Geissler WH, van den Boogart P (2007) Assumed Quaternary maar structure at the Czech/German boundary between Mýtina and Neualbenreuth (western Eger Rift, Central Europe): geophysical, petrochemical and geochronological indications. Z Geol Wiss 35(4–5):213–230Google Scholar
  7. Mrlina J, Kämpf H, Kroner C, Mingram J, Stebich M, Brauer A, Geissler WH, Kallmeyer J, Matthes H, Seidl M (2009) Discovery of the first Quaternary maar in the Bohemian Massif, Central Europe, based on combined geophysical and geological surveys. J Volc Geoth Res 182:97–112CrossRefGoogle Scholar
  8. Mrlina J, Seidl M (2008) Relation of surface movements in West Bohemia to earthquake swarms. Stud Geoph Geod 52(4):549–566CrossRefGoogle Scholar
  9. Peterek A, Reuther CD, Schunk R (2011) Neotectonic evolution of the Cheb Basin (Northwestern Bohemia, Czech Republic) and its implications for the late Pliocene to Recent crustal deformation in the western part of the Eger Rift. Z. geol. Wiss., 39 (2011) 5/6, 335–365, BerlinGoogle Scholar
  10. Ulrych J, Lloyd FE, Balogh K (2003) Age relations and geochemical constraints of Cenozoic alkaline volcanic series in W Bohemia: a review. Geolines 15:168–180Google Scholar

Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Institute of Geophysics, v.v.iAcademy of Sciences of the Czech RepublicPraha 4Czech Republic

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