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Original title:
Late Quaternary activity of slow-slip intraplate Mariánské Lázně fault as revealed by trenching and shallow geophysical survey; Bohemian Massif (Czech Republic, central Europe)
Authors: Štěpančíková, Petra ; Fischer, T. ; Hartvich, Filip ; Tábořík, Petr ; Rockwell, T. ; Stemberk, Jakub ; Široký, J. ; Sana, Hamid
Document type: Papers
Conference/Event: International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology /8./, Blenheim (NZ), 20171113
Year: 2017
Language: eng
Abstract: The NNW-SSE trending Mariánské Lázně Fault (MLF) zone is situated in the western part of the Bohemian Massif (Czech\nRepublic, central Europe) where it intersects NE-trending Cenozoic Eger rift. The northern segment of the MLF controls the\nmorphologically pronounced mountain front of Krušné hory Mts. and eastern limit of Cenozoic Cheb basin, which is famous for\nearthquake swarms (max. ML=4.6) and CO2 emanation. We performed 2D and 3D geophysical survey (electric resistivity\ntomography, ground penetration radar) and 3D trenching to look for large surface-rupturing prehistoric earthquake responsible\nfor pronounced moutain range front. Seven excavated and six hand-dug trenches revealed a complex geology and deformation\nat the study site probably as a result of right-lateral transpression during Late Quaternary. Two Holocene earthquakes 1150-590\nBC and 780-1000 AD were inferred from 14C dating of faulted Holocene colluvium with corresponding magnitudes Mw=6.7-7.0.\nThe latter one is the youngest documented surface-rupturing event in central Europe.\n
Keywords: Bohemian Massif; Cheb basin; historic earthquake; Mariánské Lázně fault; paleoseismic trenching
Project no.: GC16-10116J (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of the 8th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology. Handbook and Programme. 13-16 November 2017, ISBN 978-1-98-853036-9, ISSN 1177-2441
Institution: Institute of Rock Structure and Mechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.earthquakegeology.com/materials/proceedings/2017_Blenheim.pdf
Original record: http://hdl.handle.net/11104/0281156
Permalink: http://www.nusl.cz/ntk/nusl-373379
The record appears in these collections:
Research > Institutes ASCR > Institute of Rock Structure and Mechanics
Conference materials > Papers
Authors: Štěpančíková, Petra ; Fischer, T. ; Hartvich, Filip ; Tábořík, Petr ; Rockwell, T. ; Stemberk, Jakub ; Široký, J. ; Sana, Hamid
Document type: Papers
Conference/Event: International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology /8./, Blenheim (NZ), 20171113
Year: 2017
Language: eng
Abstract: The NNW-SSE trending Mariánské Lázně Fault (MLF) zone is situated in the western part of the Bohemian Massif (Czech\nRepublic, central Europe) where it intersects NE-trending Cenozoic Eger rift. The northern segment of the MLF controls the\nmorphologically pronounced mountain front of Krušné hory Mts. and eastern limit of Cenozoic Cheb basin, which is famous for\nearthquake swarms (max. ML=4.6) and CO2 emanation. We performed 2D and 3D geophysical survey (electric resistivity\ntomography, ground penetration radar) and 3D trenching to look for large surface-rupturing prehistoric earthquake responsible\nfor pronounced moutain range front. Seven excavated and six hand-dug trenches revealed a complex geology and deformation\nat the study site probably as a result of right-lateral transpression during Late Quaternary. Two Holocene earthquakes 1150-590\nBC and 780-1000 AD were inferred from 14C dating of faulted Holocene colluvium with corresponding magnitudes Mw=6.7-7.0.\nThe latter one is the youngest documented surface-rupturing event in central Europe.\n
Keywords: Bohemian Massif; Cheb basin; historic earthquake; Mariánské Lázně fault; paleoseismic trenching
Project no.: GC16-10116J (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of the 8th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology. Handbook and Programme. 13-16 November 2017, ISBN 978-1-98-853036-9, ISSN 1177-2441
Institution: Institute of Rock Structure and Mechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.earthquakegeology.com/materials/proceedings/2017_Blenheim.pdf
Original record: http://hdl.handle.net/11104/0281156
Permalink: http://www.nusl.cz/ntk/nusl-373379
The record appears in these collections:
Research > Institutes ASCR > Institute of Rock Structure and Mechanics
Conference materials > Papers
Record created 2018-03-09, last modified 2021-11-24