Fig 2 - uploaded by Radek Klanica
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Simplified geology map of study area (after CGS-Czech Geological Survey, 2014) with position of magnetotelluric stations (red squares used for inversion, empty squares not) and reference station Hevl?n (triangle). Variscan orogene: CMP-Central Moldanubian Pluton, PMZ-P?ibyslav Mylonite Zone, MVM-Monotonous and Varied Group of Moldanubian, GMGf?hl Group of Moldanubian, TP-T?eb?? pluton, NGM-N?m??? granulite massif, UMundifferentiated moravicum, BG-B?te? gneiss, SD-Svratka Dome, D-devonian, Ccarboniferous flysch; Cadomian orogene: DT-Dyje Terrane, MZ-Metabazite Zone, STSlavkov Terrane; Alpine orogene: BF-Boskovice Furrow, DCTZ-Diendorf-?eb?n Tectonic Zone, KF1-Lower Miocene of Carpathian Foredeep (Eggenburg-Ottnang), KF2-Lower Miocene Carpathian Foredeep (Carpat), KF3-Middle Miocene of Carpathian Foredeep (Lower Badenian), PU+ZU-Pouzd?any and ?d?nice unit of Outer Carpathians, VB-Vienna Basin.
Source publication
Eastern margin of the Bohemian Massif is a geologically remarkable area, where three different orogenic cycles are meeting—the oldest, Cadomian, building a basement for younger cycles; a younger, Variscan; and the youngest, Alpine, covering the older units. In the past, this area was investigated by gravimetry and seismic methods. Recently, we have...
Contexts in source publication
Context 1
... Brunovistulicum (Fig. 1, 2) represents a Cadomian (Pan-African) crustal segment, whose larger part is overlain by folded Paleozoic units, Jurassic and Cretaceous sediments, Paleogene and sediments of the Carpathian Foredeep and the Outer Carpathians ( Schulmann and Gayer 2000). The surface of the Cadomian fundament dips to the east, under the overlaying ...
Context 2
... the Czech Republic, the Outer Carpathians ( Fig. 1, 2) are represented by the Carpathian Foredeep and two accretionary flysch complexes: the Magura flysch and the Krosno flysch ( Plašienka et al. 1997). The older accretionary complex is built predominantly by siliciclastic complexes of the Magura nappes. The sedimentation lasted from the Upper Cretaceous to Lower Oligocene, when psammites ...
Context 3
... the Magura and partly also the Krosno flysch, are overlain in the south by the Vienna Basin (Fig. 2). The sedimentation in the Basin occurred from Miocene (Eggenburg) to Pliocene (Roman) and it is mainly filled by Miocene sea sands and clays. In Upper Miocene, the sedimentation character changed to brackish, or even limnic. Thickness of the Basin reaches up to 5 km (Royden ...
Context 4
... a series of forward simulations, we concluded that a more data-based initial model is needed, especially because of large variations of the observed resistivity along the profile, exceeding four orders of magnitude. The western part of the profile with generally very high resistivities was approximated by a large block with the resistivity of 10 4 Ω.m, while the eastern part of the profile was obtained from 1D inversions of the MT data at sites 15 to 19 (see fig. 2 or 7). The rest of the profile and the basement were assigned a uniform resistivity of 100 Ω.m. ...
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Citations
... Similar resistivity values for the sedimentary layers were observed in older magnetotelluric and geomagnetic deep sounding works, along the international Deep Seismic Sounding profile No. VI (Červ et al. 2001). The newest and closest geoelectrical study situated just a few kilometres to the west from our analysed profile (Klanica et al. 2018) and the borehole logs confirms these resistivity values. The course of this anomaly is observable in detail in the gravimetric interpretation. ...
The Vienna Basin is situated at the contact of the Bohemian Massif, Western Carpathians, and Eastern Alps. Deep borehole data and an existing magnetotelluric profile were used in density modelling of the pre-Neogene basement in the Slovak part of the Vienna Basin. Density modelling was carried out along a profile oriented in a NW-SE direction, across the expected contacts of the main geological structures. From bottom to top, four structural floors have been defined. Bohemian Massif crystalline basement with the autochthonous Mesozoic sedimentary cover sequence. The accretionary sedimentary wedge of the Flysch Belt above the Bohemian Massif rocks sequences. The Mesozoic sediments considered to be part of the Carpathian Klippen Belt together with Mesozoic cover nappes of Alpine and Carpathian provenance are thrust over the Flysch Belt creating the third structural floor. The Neogene sediments form the highest structural floor overlying tectonic contacts of the Flysch sediments and Klippen Belt as well as the Klippen Belt and the Alpine/Carpathians nappe structures.
