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Julia Kotulova

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Papers by Julia Kotulova

Sedimentology and Hydrocarbon Habitat of the Submarine-fan Deposits of the Levoca Basin (Centrocarpathian Paleogene, Slovakia) :ABSTRACT

AAPG Bulletin, 1997

Insect J3-K1 assemblage from Tasgorosay in Kazakhstan was dominated by cockroaches

Biologia, Jan 18, 2023

Amber and organic matter from the late Oligocene deep-water deposits of the Central Western Carpathians (Orava–Podhale Basin)

International Journal of Coal Geology, Apr 1, 2019

The occurrence of amber in the Central Carpathian Paleogene Basin is reported here for the first ... more The occurrence of amber in the Central Carpathian Paleogene Basin is reported here for the first time. The amber has been analyzed by means of optical microscopic methods, infrared spectrophotometry, gas chromatography/mass spectrometry, and pyrolysis-gas chromatography/mass spectrometry to understand the amber composition, origin, taphonomy, alteration, and diagenesis. Organic petrographic and reflectance analyses of organic matter from amber-bearing sediment was carried out to get information about paleoenvironment and maturity of sedimentary rock. Analyses confirmed polylabdane structure associated with Class Ib-type of amber and its possible origin from the conifer family Araucariaceae. It is characterized by a high degree of maturity, where both temperature and exogenic processes have participated in its conversion. Heterogeneity of reflectance values in the resinite suggests that amber was not redeposited from an older and more mature sedimentary unit. The discrepancy between the maturity of the amber and amber-bearing sedimentary rock, along with abundant char and inertinite macerals indicates a probability of thermal alteration of the amber under the influence of heat from a wildfire and increased maturity occurring before its ultimate burial in a deep-sea environment. The assemblage of terrigenous macerals and numerous char and inertinite particles which were found in amber-bearing sediment, as well as in the amber crust, suggest forest-swamp type vegetation affected by wildfires. The presence of amber and predominantly terrigenous organic matter,

Fluid inclusion evidence for deep burial of the Tertiary accretionary wedge of the Carpathians

Terra Nova, Dec 1, 2006

Petroleum play types and source rocks in the Pannonian basin, insight from the Slovak part of the Danube Basin

Marine and Petroleum Geology, Mar 1, 2023

The polyphase rifting and inversion of the Danube Basin revised

Global and Planetary Change, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Transform-margin model of hydrocarbon migration: the Guyana–Suriname case study

Geological Society, London, Special Publications, Dec 14, 2015

Abstract The study focuses on the Guyana–Suriname transform margin, utilizing well and reflection... more Abstract The study focuses on the Guyana–Suriname transform margin, utilizing well and reflection seismic data. Both datasets allow the permeability stratigraphy to be interpreted. It consists of areally extensive reservoir horizons separated by intraformational shale horizons and erosional unconformities. The youngest strata are deformed by the two generations of gravity glides, which took place fairly late in post-break-up history. Hydrocarbon shows from wells indicate that strata deformed by gravity glides are the only sedimentary packages where the vertical hydrocarbon migration dominates. Clusters of oil and gas shows have random spatial distribution in respective reservoir horizons within gravity glides. The base of the rock volume with dominating vertical migration is determined by the detachment horizon of the gravity-glide system. However, the areas unaffected by gravity glides are dominated by lateral migration, causing zonal distribution of oil and gas shows. Oil shows occur in wells penetrating the proximal margin and gas shows are found in wells penetrating the distal margin in respective reservoir horizons. Both sets are fed by the source rock occurring in the oceanic basin and the adjacent distal margin. The best example of this situation is provided by the Paleocene–Eocene reservoirs.

Origin of methane in quartz crystals from the Tertiary accretionary wedge and fore-arc basin of the Western Carpathians

Applied Geochemistry, Sep 1, 2002

Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions coverin... more Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions covering the compositional range from gaseous CH 4 AE CO 2 AE C 2+ mixture, through CH 4-saturated oil, to CH 4-saturated aqueous solution. The C isotope composition of CH 4 extracted from the fluid inclusions (À31 and À36% V-PDB) is indicative of a thermogenic dry gas released from overmature rocks, although the maturation level of the surrounding flysch corresponds to a wet-gas generating zone. Trapping PT conditions for the CH 4-bearing fluids range between 130 and 205 C and 0.5 and 3.7 kbar. The fluid inclusion-derived crystallisation temperatures are inconsistent with the vitrinite reflectance data. Strongly fluctuating fluid pressures during growth of the quartz crystals indicate the existence of a crack-seal mechanism with recurrent hydrostatic and lithostatic regimes. Fluid pressures exceeding the lithostatic load have been recorded in the Dukla nappe. The overpressures have been generated by fluid volume increase due to thermal decomposition of oil and kerogen to CH 4 and pyrobitumen. Occurrence of oil and condensate in the CH 4-bearing inclusion fluids trapped at temperatures considerably above oil window suggest a short-termed, transient post-orogenic heating, rather than a prolonged heating related to burial. The thermal event giving rise to the quartz crystallisation has been coincidental with regional collapse and uplift of the Western Carpathians.

Palaeoclimatic implications across the Eocene-Oligocene transition in the Central Carpathian Palaeogene Basin: demise of carbonate platform and cool-water influx

East Slovakian basin: basic features of petroleum system

GIS in the hydrocarbon basin research in Slovakia

Geophysical and geological GIS related to oil and gas resources in Slovakian Basins

Evaluating the hydrocarbon potential of the East Slovakian Basin

Lunzské vrstvy hronika východnej časti Strážovských vrchov

The presented work summarizes knowledge on the Lunz Beds in the Hronic Považie and Ostrá Malenica... more The presented work summarizes knowledge on the Lunz Beds in the Hronic Považie and Ostrá Malenica nappes of the eastern portion of the Strážovské vrchy Mts. It is based mainly on the results of fild research and geological mapping in the area of the Zliechovská hornatina and Nitrické vrchy Mts. The studied rocks are mainly gray-green or brown sandstones, and locall gray-green siltstones or grey claystones. The sandstones are usually structureless (massive) or laminated, thin- to thick bedded. Contain coalifid plant remains, ichnotaxa <em>Arenicolites </em>isp., <em>Phycodes </em>isp., <em>Planolites </em>isp. and <em>Thalassinoides </em>isp. and siltstone or claystone intraclasts. Petrographically, sandstones represent micaceous subarkose, lithic wacke, less often feldspathic (arkosic) wacke and sublitharenite. The observed vitrinite reflctance values 0.95–0.97 % Ro indicate a relatively high diagenetic transformation of the Lunz Beds,...

Insect J3-K1 assemblage from Tasgorosay in Kazakhstan was dominated by cockroaches

Biologia

Fluid inclusion evidence for deep burial of the Tertiary accretionary wedge of the Carpathians

Terra Nova, 2006

Sedimentary, biological and isotopic record of early Aptian paleoclimatic event in the Pieniny Klippen Belt, Slovak Western Carpathians

GEOLOGICA …, 1999

... JOZEF MICHALIK 1* , DANIELA REHAKOVA 1 , OTILIA LINTNEROVA 3 , DANIELA BOOROVA 5 , EVA HALASO... more

Origin of methane in quartz crystals from the Tertiary accretionary wedge and fore-arc basin of the Western Carpathians

Applied Geochemistry, 2002

Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions coverin... more Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions covering the compositional range from gaseous CH 4 AE CO 2 AE C 2+ mixture, through CH 4-saturated oil, to CH 4-saturated aqueous solution. The C isotope composition of CH 4 extracted from the fluid inclusions (À31 and À36% V-PDB) is indicative of a thermogenic dry gas released from overmature rocks, although the maturation level of the surrounding flysch corresponds to a wet-gas generating zone. Trapping PT conditions for the CH 4-bearing fluids range between 130 and 205 C and 0.5 and 3.7 kbar. The fluid inclusion-derived crystallisation temperatures are inconsistent with the vitrinite reflectance data. Strongly fluctuating fluid pressures during growth of the quartz crystals indicate the existence of a crack-seal mechanism with recurrent hydrostatic and lithostatic regimes. Fluid pressures exceeding the lithostatic load have been recorded in the Dukla nappe. The overpressures have been generated by fluid volume increase due to thermal decomposition of oil and kerogen to CH 4 and pyrobitumen. Occurrence of oil and condensate in the CH 4-bearing inclusion fluids trapped at temperatures considerably above oil window suggest a short-termed, transient post-orogenic heating, rather than a prolonged heating related to burial. The thermal event giving rise to the quartz crystallisation has been coincidental with regional collapse and uplift of the Western Carpathians.

Sedimentology and Hydrocarbon Habitat of the Submarine-fan Deposits of the Levoca Basin (Centrocarpathian Paleogene, Slovakia) :ABSTRACT

AAPG Bulletin, 1997

The Structure and Geochemistry of the Kila-Kupra Mud Volcano (Georgia)

Sedimentology and Hydrocarbon Habitat of the Submarine-fan Deposits of the Levoca Basin (Centrocarpathian Paleogene, Slovakia) :ABSTRACT

AAPG Bulletin, 1997

Insect J3-K1 assemblage from Tasgorosay in Kazakhstan was dominated by cockroaches

Biologia, Jan 18, 2023

Amber and organic matter from the late Oligocene deep-water deposits of the Central Western Carpathians (Orava–Podhale Basin)

International Journal of Coal Geology, Apr 1, 2019

The occurrence of amber in the Central Carpathian Paleogene Basin is reported here for the first ... more The occurrence of amber in the Central Carpathian Paleogene Basin is reported here for the first time. The amber has been analyzed by means of optical microscopic methods, infrared spectrophotometry, gas chromatography/mass spectrometry, and pyrolysis-gas chromatography/mass spectrometry to understand the amber composition, origin, taphonomy, alteration, and diagenesis. Organic petrographic and reflectance analyses of organic matter from amber-bearing sediment was carried out to get information about paleoenvironment and maturity of sedimentary rock. Analyses confirmed polylabdane structure associated with Class Ib-type of amber and its possible origin from the conifer family Araucariaceae. It is characterized by a high degree of maturity, where both temperature and exogenic processes have participated in its conversion. Heterogeneity of reflectance values in the resinite suggests that amber was not redeposited from an older and more mature sedimentary unit. The discrepancy between the maturity of the amber and amber-bearing sedimentary rock, along with abundant char and inertinite macerals indicates a probability of thermal alteration of the amber under the influence of heat from a wildfire and increased maturity occurring before its ultimate burial in a deep-sea environment. The assemblage of terrigenous macerals and numerous char and inertinite particles which were found in amber-bearing sediment, as well as in the amber crust, suggest forest-swamp type vegetation affected by wildfires. The presence of amber and predominantly terrigenous organic matter,

Fluid inclusion evidence for deep burial of the Tertiary accretionary wedge of the Carpathians

Terra Nova, Dec 1, 2006

Petroleum play types and source rocks in the Pannonian basin, insight from the Slovak part of the Danube Basin

Marine and Petroleum Geology, Mar 1, 2023

The polyphase rifting and inversion of the Danube Basin revised

Global and Planetary Change, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Transform-margin model of hydrocarbon migration: the Guyana–Suriname case study

Geological Society, London, Special Publications, Dec 14, 2015

Abstract The study focuses on the Guyana–Suriname transform margin, utilizing well and reflection... more Abstract The study focuses on the Guyana–Suriname transform margin, utilizing well and reflection seismic data. Both datasets allow the permeability stratigraphy to be interpreted. It consists of areally extensive reservoir horizons separated by intraformational shale horizons and erosional unconformities. The youngest strata are deformed by the two generations of gravity glides, which took place fairly late in post-break-up history. Hydrocarbon shows from wells indicate that strata deformed by gravity glides are the only sedimentary packages where the vertical hydrocarbon migration dominates. Clusters of oil and gas shows have random spatial distribution in respective reservoir horizons within gravity glides. The base of the rock volume with dominating vertical migration is determined by the detachment horizon of the gravity-glide system. However, the areas unaffected by gravity glides are dominated by lateral migration, causing zonal distribution of oil and gas shows. Oil shows occur in wells penetrating the proximal margin and gas shows are found in wells penetrating the distal margin in respective reservoir horizons. Both sets are fed by the source rock occurring in the oceanic basin and the adjacent distal margin. The best example of this situation is provided by the Paleocene–Eocene reservoirs.

Origin of methane in quartz crystals from the Tertiary accretionary wedge and fore-arc basin of the Western Carpathians

Applied Geochemistry, Sep 1, 2002

Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions coverin... more Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions covering the compositional range from gaseous CH 4 AE CO 2 AE C 2+ mixture, through CH 4-saturated oil, to CH 4-saturated aqueous solution. The C isotope composition of CH 4 extracted from the fluid inclusions (À31 and À36% V-PDB) is indicative of a thermogenic dry gas released from overmature rocks, although the maturation level of the surrounding flysch corresponds to a wet-gas generating zone. Trapping PT conditions for the CH 4-bearing fluids range between 130 and 205 C and 0.5 and 3.7 kbar. The fluid inclusion-derived crystallisation temperatures are inconsistent with the vitrinite reflectance data. Strongly fluctuating fluid pressures during growth of the quartz crystals indicate the existence of a crack-seal mechanism with recurrent hydrostatic and lithostatic regimes. Fluid pressures exceeding the lithostatic load have been recorded in the Dukla nappe. The overpressures have been generated by fluid volume increase due to thermal decomposition of oil and kerogen to CH 4 and pyrobitumen. Occurrence of oil and condensate in the CH 4-bearing inclusion fluids trapped at temperatures considerably above oil window suggest a short-termed, transient post-orogenic heating, rather than a prolonged heating related to burial. The thermal event giving rise to the quartz crystallisation has been coincidental with regional collapse and uplift of the Western Carpathians.

Palaeoclimatic implications across the Eocene-Oligocene transition in the Central Carpathian Palaeogene Basin: demise of carbonate platform and cool-water influx

East Slovakian basin: basic features of petroleum system

GIS in the hydrocarbon basin research in Slovakia

Geophysical and geological GIS related to oil and gas resources in Slovakian Basins

Evaluating the hydrocarbon potential of the East Slovakian Basin

Lunzské vrstvy hronika východnej časti Strážovských vrchov

The presented work summarizes knowledge on the Lunz Beds in the Hronic Považie and Ostrá Malenica... more The presented work summarizes knowledge on the Lunz Beds in the Hronic Považie and Ostrá Malenica nappes of the eastern portion of the Strážovské vrchy Mts. It is based mainly on the results of fild research and geological mapping in the area of the Zliechovská hornatina and Nitrické vrchy Mts. The studied rocks are mainly gray-green or brown sandstones, and locall gray-green siltstones or grey claystones. The sandstones are usually structureless (massive) or laminated, thin- to thick bedded. Contain coalifid plant remains, ichnotaxa <em>Arenicolites </em>isp., <em>Phycodes </em>isp., <em>Planolites </em>isp. and <em>Thalassinoides </em>isp. and siltstone or claystone intraclasts. Petrographically, sandstones represent micaceous subarkose, lithic wacke, less often feldspathic (arkosic) wacke and sublitharenite. The observed vitrinite reflctance values 0.95–0.97 % Ro indicate a relatively high diagenetic transformation of the Lunz Beds,...

Insect J3-K1 assemblage from Tasgorosay in Kazakhstan was dominated by cockroaches

Biologia

Fluid inclusion evidence for deep burial of the Tertiary accretionary wedge of the Carpathians

Terra Nova, 2006

Sedimentary, biological and isotopic record of early Aptian paleoclimatic event in the Pieniny Klippen Belt, Slovak Western Carpathians

GEOLOGICA …, 1999

... JOZEF MICHALIK 1* , DANIELA REHAKOVA 1 , OTILIA LINTNEROVA 3 , DANIELA BOOROVA 5 , EVA HALASO... more

Origin of methane in quartz crystals from the Tertiary accretionary wedge and fore-arc basin of the Western Carpathians

Applied Geochemistry, 2002

Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions coverin... more Quartz crystals from mineralised joints of the Carpathian flysch contain fluid inclusions covering the compositional range from gaseous CH 4 AE CO 2 AE C 2+ mixture, through CH 4-saturated oil, to CH 4-saturated aqueous solution. The C isotope composition of CH 4 extracted from the fluid inclusions (À31 and À36% V-PDB) is indicative of a thermogenic dry gas released from overmature rocks, although the maturation level of the surrounding flysch corresponds to a wet-gas generating zone. Trapping PT conditions for the CH 4-bearing fluids range between 130 and 205 C and 0.5 and 3.7 kbar. The fluid inclusion-derived crystallisation temperatures are inconsistent with the vitrinite reflectance data. Strongly fluctuating fluid pressures during growth of the quartz crystals indicate the existence of a crack-seal mechanism with recurrent hydrostatic and lithostatic regimes. Fluid pressures exceeding the lithostatic load have been recorded in the Dukla nappe. The overpressures have been generated by fluid volume increase due to thermal decomposition of oil and kerogen to CH 4 and pyrobitumen. Occurrence of oil and condensate in the CH 4-bearing inclusion fluids trapped at temperatures considerably above oil window suggest a short-termed, transient post-orogenic heating, rather than a prolonged heating related to burial. The thermal event giving rise to the quartz crystallisation has been coincidental with regional collapse and uplift of the Western Carpathians.

Sedimentology and Hydrocarbon Habitat of the Submarine-fan Deposits of the Levoca Basin (Centrocarpathian Paleogene, Slovakia) :ABSTRACT

AAPG Bulletin, 1997

The Structure and Geochemistry of the Kila-Kupra Mud Volcano (Georgia)