PETROFYZIKÁLNÍ CHARAKTERISTIKA HRANIČNÍHO INTERVALU DEVONU A KARBONU V MORAVSKÉM KRASU

Tomáš Kumpan; Ondřej Bábek; Jiří Kalvoda

doi:10.5817/GVMS2012-1-2-104

Petrophysical signature of the Devonian/Carboniferous boundary interval in the Moravian Karst

Vol.19,No.1-2(2012)

Tomáš Kumpan Ondřej Bábek Jiří Kalvoda

https://doi.org/10.5817/GVMS2012-1-2-104

PDF (Czech)

Abstract

The first results of the petrophysical research (gamma-ray spectrometry, magnetic susceptibility, diffuse spectral reflectance) of the Devonian/Carboniferous boundary interval in the southern and middle part of the Moravian Karst demonstrate a good correlation potential of outcrop logging by gamma-ray spectrometry. This method allows us to correlate distinct petrophysical patterns through the different lithofacies developments (Horákov and Hostěnice facies), while magnetic susceptibility and diffuse spectral reflectance failed to show correlatable patterns. The most prominent petrophysical patterns at the sections can be correlated with the polyphase Hangenberg Event.

Keywords:
Famennian; Tournaisian; petrophysics; Líšeň Formation; Hangenberg Event

References

Adams, J. A . – Weaver, C. E. (1958): Thorium-to-uranium ratios as indicators of sedimentary processes; example of concept of geochemical facies. – American Association of Petroleum Geologists Bulletin, 42, 387–430.

Barranco, F. T. – Balsam, W. L. – Deaton, B. C. (1989): Quantitative reassessment of brick red lutites; evidence from reflectance spectrophotometry. – Marine Geology, 89, 299–314. https://doi.org/10.1016/0025-3227(89)90082-0

Ellwood, B. B. – Crick, R. E. – El Hassani, A. (1999): The magneto-susceptibility event and cyclostratigraphy (MSEC) method used in geological correlation of Devonian rocks from Anti-Atlas Morocco. – American Association of Petroleum Geologists Bulletin, 83, 1 119–1 134.

Isaacson, P. E. – Díaz-Martínez, E. – Grader, G. W. – Kalvoda, J. – Babek, O. – Devuyst, F. X. (2008): Late Devonian–earliest Mississippian glaciation in Gondwanaland and its biogeographic consequences. – Palaeogeography, Palaeoclimatology, Palaeoecology, 268, 126–142. https://doi.org/10.1016/j.palaeo.2008.03.047

Kaiser, S. I. – Steuber, T. – Becker, T. R. – Joachimski, M. M. (2006): Geochemical evidence for major environmental change at the Devonian–Carboniferous boundary in the Carnic Alps and the Rhenish Massif. – Palaeogeography, Palaeoclimatology, Palaeoecology, 240, 146–160. https://doi.org/10.1016/j.palaeo.2006.03.048

Kalvoda, J. – Kukal, Z. (1987): Devonian-Carboniferous Boundary in the Moravian Karst at Lesní lom Quarry, Brno-Líšeň, Czechoslovakia. – Courier Forschungsinstitut Senckenberg, 98, 95–117.

Koptíková, L. – Bábek, O. – Hladil, J. – Slavík, L. (2010): Stratigraphic significance and resolution of spectral reflectance logs in Lower Devonian carbonates of the Barrandian area, Czech Republic; a correlation with magneticsusceptibility and gamma-ray logs. – Sedimentary Geology, 225, 83–98. https://doi.org/10.1016/j.sedgeo.2010.01.004

Kumpan, T. – Kalvoda, J. – Bábek, O. – Frýda, J. (2012): Izotopové záznamy uhlíku přes hangenberský event (hranice devon–karbon) ve střední a jižní části Moravského krasu. – Zprávy o geologických výzkumech v roce 2011, 26–28.

Rez, J. – Melichar, R. – Kalvoda, J. (2011): Polyphase deformation of the Variscan accretionary wedge: an example from the southern part of the Moravian Karst (Bohemian Massif, Czech Republic). – Kinematic Evolution and Structural Styles of Fold-and-Th rust Belts. Geological Society London, Special publications 349, 223–235. https://doi.org/10.1144/SP349.12

Rider, M. H. (1999): The Geological Interpretation of Well Logs. – Whittles Publishing Services.

Metrics