Heat flow evolution, subsidence and erosion in Upper Silesian Coal Basin, Czech Republic

Geršlová, Eva; Goldbach, Marek; Geršl, Milan; Skupien, Petr

doi:10.1016/j.coal.2015.12.007

Cited by 20 publications

(12 citation statements)

References 10 publications

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“…4C-D). Similar thickness of eroded strata was also recently calculated from the Czech part of the USCB (Geršlová et al 2016).…”

Section: Resultssupporting

confidence: 83%

“…Generally, reconstructions of the thermal history of this basin are traditionally based on geological evidences including organic matter maturity, mineral indices such as illite crystallinity and conodont alteration indices (CAI), but more recently also on K-Ar dating, apatite fission track and helium dating (e.g. Belka 1993;Kotas 1995Kotas , 2001Środoń et al 2006;Botor 2014;Geršlová et al 2016). At least two groups of models for the thermal history of the USCB have been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…The first has maximum temperatures at the end of the Carboniferous, just prior to or slightly after the tectonic inversions that were related mainly to burial. In the second group scenario, maximum temperatures were related to a regional thermal pulse(s) either (i) in the Mesozoic, in response to unrecognized deep magmatism and/or fluid circulation related to regional tectonic activity, or (ii) additional burial, in the Miocene or Mesozoic (Belka 1993;Kotas 1995Kotas , 2001Środoń et al 2006;Botor 2014;Geršlová et al 2016). The aim of Doporučená citace článku: Botor, D., Bábek, O.…”

Section: Introductionmentioning

confidence: 99%

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Burial and thermal history modelling of the Upper Carboniferous strata based on vitrinite refl ectance data from Bzie-Dębina-60 borehole (Upper Silesian Coal Basin, southern Poland)

Botor

Bábek²

2019

Geologické výzkumy

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Integrated modeling of the coal rank in the Upper Carboniferous sediments of the Bzie-Dębina-60 borehole from SW of the Upper Silesian Coal Basin was performed based on a new vitrinite reflectance measurements from the Westphalian A. Microscopic investigations of Westphalian samples in the Bzie-Debina-60 well have shown that organic matter is dominated by vitrinite maceral group. The coal rank in the well shows an increase with depth. The mean vitrinite reflectance values in these samples range from 0.76 to 1.07 %. One-dimensional forward modelling of thermal maturity in the Bzie-Dębina-60 borehole section has been performed in order to explain the burial and thermal history. The maximum temperature (c. 145 °C) causing the coalification occurred in the Latest Carboniferous (c. 300 Ma). These processes were likely related to significant late Variscan burial heating in this area as indicated by previous authors.

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“…4C-D). Similar thickness of eroded strata was also recently calculated from the Czech part of the USCB (Geršlová et al 2016).…”

Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Burial and thermal history modelling of the Upper Carboniferous strata based on vitrinite refl ectance data from Bzie-Dębina-60 borehole (Upper Silesian Coal Basin, southern Poland)

Botor

Bábek²

2019

Geologické výzkumy

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“…The thermal maturity of the thrust slices was modelled separately, allowing their individual thermal histories to be investigated before and after thrusting. The age of the thrusting in the model is 325-320 Ma with subsequent erosion of the Variscan flysch then occurring up to 300 Ma (Pícha et al, 2006;Geršlová et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

“…The basal heat flow is the most important boundary condition and allows the maturity of potential source rocks to be predicted. The model presented here is based on sensitivity analyses of the heat flow evolution for the Upper Silesian Coal Basin (Czech Republic) during the Palaeozoic as presented by Geršlová et al (2016). Standard boundary condition data for heat flow analysis are temperature maps on the sediment surface or the SWIT and maps of basal heat flow (Hantschel and Kauerauf, 2009).…”

Section: Boundary Conditionsmentioning

confidence: 99%

2d Basin Modelling in the Eastern Variscan Fold Belt (Czech Republic): Influence of Thrusting on Patterns of Thermal Maturation

Jirman

Geršlová

Kalvoda

et al. 2018

Journal of Petroleum Geology

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This study evaluates the geothermal history of Palaeozoic sedimentary rocks from the easternmost part of the Variscan external zone in the NE Czech Republic. The objective was to investigate the geothermal history of pre‐Variscan Palaeozoic carbonates in the study area, and to assess its relationship with that of the overlying Variscan flysch. In the study area, the Palaeozoic succession occurs at the surface or is overlain by Miocene sediments of the Carpathian Foredeep. Palaeozoic nappes and the main Variscan overthrust have been documented in the subsurface at the deep Potštát‐1borehole. Vitrinite reflectance measurements on 38 samples from the Potštát‐1 well and 19 samples from nearby surface outcrops and shallow boreholes were available. A 2D thermal model was created using PetroMod and the thermal maturity evolution was modelled by EASY%Ro. The thermal model was constructed based on interpretations of two NW‐SE seismic profiles (lines 5/83 and 5/84) oriented perpendicular to the main Variscan thrusts. The results were calibrated using measured vitrinite reflectance and were adjusted with 1D models from three shallow boreholes. At the Potštát‐1 borehole, modelled maximum palaeo‐temperatures of the Variscan flysch (Moravice Formation) ranged from 310°C at a depth of 7.3 km (the top of the preserved succession) to 395°C at the base of the succession, resulting in thermal maturities of >4%Rr. Peak maturation occurred prior to the end of Variscan thrusting. Modelling suggests that the basal heat flow for these thrust units reached a maximum value of 63 mW/m2 at 325 Ma. In addition, the modelling suggests that the maturity of the Palaeozoic carbonates was controlled by the thickness of the overlying Variscan flysch nappes. Maximum palaeo‐temperatures for the Palaeozoic carbonates ranged from 265°C at the top of the interval (at a depth of 7.1 km) to 290°C at the base, resulting in a maturity of 3.8 to >4%Rr which is within the dry gas window. The study suggests that basal heat flows in the original (pre‐thrust) Early Carboniferous sedimentary basin were slightly higher than those in the post‐thrust location for the Variscan flysch nappes. This should be taken into account when evaluating the petroleum system in the South Moravian oil province (SW Czech Republic) where a complete sedimentary sequence has not been preserved.

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First U–Pb LA-ICP-MS zircon ages assessed from a volcano-sedimentary complex of the mid-European Variscides (Pennsylvanian, Flöha Basin, SE Germany)

Löcse¹,

Linnemann

Schneider

et al. 2019

Int J Earth Sci (Geol Rundsch)

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Heat flow evolution, subsidence and erosion in Upper Silesian Coal Basin, Czech Republic

Cited by 20 publications

References 10 publications

Burial and thermal history modelling of the Upper Carboniferous strata based on vitrinite refl ectance data from Bzie-Dębina-60 borehole (Upper Silesian Coal Basin, southern Poland)

Burial and thermal history modelling of the Upper Carboniferous strata based on vitrinite refl ectance data from Bzie-Dębina-60 borehole (Upper Silesian Coal Basin, southern Poland)

2d Basin Modelling in the Eastern Variscan Fold Belt (Czech Republic): Influence of Thrusting on Patterns of Thermal Maturation

First U–Pb LA-ICP-MS zircon ages assessed from a volcano-sedimentary complex of the mid-European Variscides (Pennsylvanian, Flöha Basin, SE Germany)

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