Imaging the Mariánské Lázně Fault (Czech Republic) by 3-D ground-penetrating radar and electric resistivity tomography

0381710 - GFÚ 2013 RIV CZ eng J - Journal Article
Fischer, Tomáš - Štěpančíková, Petra - Karousová, M. - Tábořík, P. - Flechsig, C. - Gaballah, M.
Imaging the Mariánské Lázně Fault (Czech Republic) by 3-D ground-penetrating radar and electric resistivity tomography.
Studia geophysica et geodaetica. Roč. 56, č. 4 (2012), s. 1019-1036. ISSN 0039-3169. E-ISSN 1573-1626
R&D Projects: GA AV ČR IAA300120905
Institutional research plan: CEZ:AV0Z30120515; CEZ:AV0Z30460519
Keywords : fault tectonics * resistivity tomography * ground penetrating radar
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 0.975, year: 2012

Geodynamic activity in the area of West Bohemia is typified by the occurrence of earthquake swarms, Quaternary volcanism and high flux of mantle-derived CO2. The highest swarm activity occurs beneath the eastern edge of the Cheb basin, which is delineated by the NW-SE trending morphologically pronounced Mariánské Lázně Fault (MLF) controlling the formation of the basin. The previous trenching survey across the MLF zone has identified several fault strands with possible Quaternary activity. In this paper we present the results of the geophysical survey focused to trace the faults signatures in geophysical sections and to build an image of near surface tectonics. The method of electric resistivity tomography (ERT) along two profiles parallel to the trench identified a strong resistivity contrast between the bodies of sandy gravels in the middle and conductive clayey sands to the west and weathered crystalline basement to the east.
Permanent Link: http://hdl.handle.net/11104/0212118