Examples of Paleokarst in Mesozoic Carbonate Formations in the Carpathian Foreland Area

Anna Łaba-Biel, Kinga Filipowska-Jeziorek (), Andrzej Urbaniec, Mariusz Miziołek, Robert Bartoń, Bogdan Filar, Agnieszka Moska and Tadeusz Kwilosz
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Anna Łaba-Biel: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Kinga Filipowska-Jeziorek: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Andrzej Urbaniec: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Mariusz Miziołek: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Robert Bartoń: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Bogdan Filar: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Agnieszka Moska: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland
Tadeusz Kwilosz: Oil and Gas Institute—National Research Institute, 25A Lubicz Str., 31-503 Cracow, Poland

Energies, 2024, vol. 17, issue 4, 1-19

Abstract: A paleokarst system developed in the Upper Jurassic–Lower Cretaceous carbonate complex has been recognized in the Carpathian Foreland area. Well logs testing and core data as well as an acoustic imager, a microresistivity scanner and six-arm dipmeter images were used to identify and analyze the character of the paleokarst features. A detailed interpretation of microresistivity and acoustic image logs allowed for the identification of different types of karst forms, such as caverns; multidirectional fractures, including fractures widened by dissolution; and the type of sediments filling them. The analysis of the seismic survey was conducted by linking the paleokarst characteristic features recognized in the seismic image to the karst intervals determined from borehole data. The set of seismic attributes calculated from the analyzed 3D seismic data, including the RMS amplitude, instantaneous frequency, consistent dip, variance, sweetness and relative acoustic impedance, helped to delineate the zones of the paleokarst distribution. Within the interpreted paleokarst surface developed in the carbonate formations in the study area, there are sinkholes, limestone pavements and valleys. Furthermore, in the northwestern part of the analyzed area, the development of paleokarst forms is related to the presence of a relatively deep branch of a paleovalley formed in the Paleogene, as well as to numerous discontinuities developed in carbonate formations. The development of this type of larger karst form was probably controlled primarily by tectonic faults. The research conducted by the authors of this paper showed the widespread presence of paleokarst features in Upper Jurassic–Lower Cretaceous carbonate formations in the study area. A good spatial identification of the paleokarst surface can be important in a regional context, since the highest part of the profile of carbonate formations is the most important reservoir for geothermal or hydrocarbon resources in this region.

Keywords: paleokarst system; carbonates; Carpathian Foreland (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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