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    Wyświetlanie 1-13 z 13
    Tytuł:
    Origin of hydrocarbon gases accumulated in the Middle Cambrian reservoirs of the Polish part of the Baltic region
    Autorzy:
    Kotarba, M. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059071.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polish Baltic Sea region
    Upper Cambrian-Tremadocian source rock succession
    thermogenic gases
    microbial methane
    hydrous pyrolysis
    stable isotopes
    Opis:
    The origin of natural gases associated with oil and condensate accumulations within the Middle Cambrian sandstone reservoirs on the Polish part of the Baltic region was characterized by means of molecular analyses, stable carbon isotopes of methane, ethane and propane, and stable hydrogen isotopes of methane. Gases generated from the Upper Cambrian-Tremadocian source rock succession by hydrous pyrolysis at 330°C for 72 h was used to characterize thermogenic gas and to identify the microbial methane input in the natural gas accumulations. A insignificant component of microbial methane is only present in gases from the B3 offshore field and from two inflows in the B7-1/91 borehole. The traps within the Middle Cambrian sandstone reservoirs had already been formed and sealed between the Late Cambrian and the Early Ordovician time span when migration of microbial methane took place along the fault system. The traps were successively supplied with thermogenic gaseous hydrocarbons, condensate and oil generated from the same source organic matter of the Upper Cambrian-Tremadocian source rock succession at a successively higher maturation stage.
    Źródło:
    Geological Quarterly; 2010, 54, 2; 197-204
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin of oils accumulated in the Middle Cambrian reservoirs of the Polish part of the Baltic region
    Autorzy:
    Kowalski, A.
    Więcław, D.
    Kotarba, M. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059062.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Baltic Region
    Lower Paleozoic
    oil origin
    biomarkers
    stable carbon isotopes
    oil-oil correlation
    Opis:
    We have examined 21 samples of crude oils accumulated in the Middle Cambrian sandstone reservoirs from the Polish part of the Baltic region. All the crude oils have similar parameters and indices, which suggests generation from the same source rock. Evaporative fractionation and biodegradation processes were detected in oil collected from the B4-N1/01 borehole. All crude oils have high gravities and low-sulphur contents, less than 0.3 wt.%, which suggests that their source rock contained low-sulphur kerogen deposited in a clastic environment. A low asphaltenes content (below 0.3 wt.%) and high saturate/aromatic hydrocarbon ratios indicate long migration distances or high thermal maturities. The longest migration distance was probably attained by oils from the arnowiec and B16 deposits. The biomarker data indicate an algal origin for the source organic matter deposited under conditions of clastic sedimentation. The stable carbon isotope data support this observation. The maturity of the oils analysed varies from ca. 0.75 to ca. 1.05% on the vitrinite reflectance scale. Unlike the B6, B16, Dbki and arnowiec accumulations, oils from the B3 and B4 accumulations reveal the lowest maturity.
    Źródło:
    Geological Quarterly; 2010, 54, 2; 205-216
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Source rock geochemistry, petrography of reservoir horizons and origin of natural gas in the Devonian of the Lublin and Lviv basins (SE Poland and western Ukraine)
    Autorzy:
    Radkovets, N. Y.
    Kotarba, M. J.
    Wójcik, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060597.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Devonian
    Lublin Basin
    Lviv Basin
    Rock-Eval pyrolysis
    petrography
    isotope geochemistry
    Opis:
    The Rock-Eval source rock characteristics, mineral composition and type-porosity of reservoir horizons, and origin of natural gas in the Devonian of the Lublin and Lviv basins are described. In the Lower Devonian, the TOC content ranges from 0.01 to 1.82 wt.% in the Lublin Basin, and from 0.01 to 0.45 wt.% in the Lviv Basin. Transformation of organic matter varies from immature in the Lochkovian (Lviv Basin) to mature and overmature in the Emsian (Lublin Basin). The organic matter contains mainly Type-II kerogen, and underwent primary and/or secondary oxidation processes. In the Middle Devonian, the TOC content varies from 0.00 to 1.63 wt.% in the Lublin Basin, and from 0.02 to 0.64 to 2.35 wt.% in the Lviv Basin. The organic matter contains mainly Type-II kerogen and is immature in the Givetian of the Lviv Basin and mature in the Eifelian of the Lviv Basin and in the Eifelian and Givetian in the Lublin Basin. In the Upper Devonian, the TOC content is from 0.02 to 2.62 wt.% in the Lublin Basin, and from 0.04 to 1.43 wt.% in the Lviv Basin. Type-II kerogen dominates in both basins. Organic matter is mature in the Upper Devonian in the Lublin Basin and in the Famennian of the Lviv Basin and overmature in the Frasnian of the Lviv Basin. The reservoir horizons in the Devonian of the Lublin and Lviv basins are developed in clastic, carbonate and sulphate rocks. Terrigenous rocks form several separate horizons in the Lower and Middle Devonian of the Lviv Basin, and in the Upper Devonian (Famennian) of the Lublin Basin. Their filtration properties relate to intergranular porosity, while the fracture space has subordinate significance. Carbonate rocks form thick saturated horizons in the Givetian in the Lviv Basin, and in the Eifelian, Givetian and Frasnian in the Lublin Basin. Their filtration properties are produced by fracture porosity. Sulphates and carbonate-sulphate rocks with fracture and cavern porosity play a role as reservoir horizons in the Middle Devonian of the Lublin Basin. The natural gas collected from the Upper Devonian of the Lublin Basin was generated mainly during low-temperature thermogenic processes, from Ordovician–Silurian Type-II kerogen. The gas from the Middle Devonian reservoirs of the Lviv Basin was produced from Ordovician–Silurian Type-II kerogen and partly from the Middle and Upper Devonian mixed Type-III/II kerogen with maturity from about 0.9 to 1.4%. Carbon dioxide was formed by both thermogenic and microbial processes. Molecular nitrogen was generated mainly through thermal transformation of organic matter and also from destruction of NH4-rich illite of the clayey facies of the Ordovician–Silurian strata.
    Źródło:
    Geological Quarterly; 2017, 61, 3; 569--589
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of hydrous-pyrolysis kinetic parameters for oil generation from Baltic Cambrian and Tremadocian source rocks with Type-II kerogen
    Autorzy:
    Więcław, D.
    Kotarba, M. J.
    Lewan, M. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059067.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Baltic Region
    Cambrian
    Ordovician
    hydrous pyrolysis
    organic sulfur
    kinetic parameters
    type II kerogen
    Opis:
    Determining kinetic parameters for oil generation from a source rock by hydrous pyrolysis requires a considerable amount of sample (kilograms) and laboratory time (several weeks). In an effort to circumvent these requirements, hydrous-pyrolysis (HP) kinetic parameters for oil generation from Upper Cambrian and Tremadocian source rocks of the Baltic region are estimated by two methods: (1) organic sulfur content in kerogen and (2) HP experiments conducted at 330 and 355°C for 72 h. Estimates for the Upper Cambrian source rocks based on organic sulfur contents gave activation energies from 47 to 56 kcal/mole and frequency factors from 1.156 ' 1025>/sup> to 1.078 ' 1028 m.y.-1 . Tremadocian source rocks based on organic sulfur content gave estimated activation energies from 60 to 62 kcal/mole and frequency factors from 1.790 ' 1029 to 1.104 ' 1030 m.y.-1 . The estimates for the Tremadocian source rocks were less affected by thermal maturation because their low kerogen S/(S + C) mole fractions (< 0.018) remained essentially constant. Conversely, the higher kerogen S/(S + C) mole fractions (>>gt; 0.018) of the Upper Cambrian source rocks decreased with thermal maturation and resulted in overestimation of the kinetic parameters. The second method was designed to estimate kinetic parameters based on two HP experiments. The assumption that the maximum yield in calculating the rate constant at 330°C (k330°C could be determined by a second hydrous pyrolysis experiment at 355°C for 72 h proved not to be valid. Instead, a previously established relationship between Rock-Eval hydrogen index and maximum HP yield for Type-II kerogen was used to calculate k330°C from oil yields generated by the HP experiment at 330°C for 72 h assuming a first-order reaction. HP kinetic parameters were determined from relationships between k330°C and the HP kinetic parameters previously reported. These estimated HP kinetic parameters were in agreement with those obtained by the first method for immature samples, but underestimated the kinetic parameters for samples at higher thermal maturities. Applying these estimated HP kinetic parameters to geological heating rates of 1 and 10°C/m.y. indicated that the Upper Cambrian source rocks would generate oil notably earlier than the overlying Tremadocian source rocks. This was confirmed in part by available data from two neighboring boreholes in the Polish sector of the Baltic.
    Źródło:
    Geological Quarterly; 2010, 54, 2; 217-226
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Habitat and hydrocarbon potential of the Mesozoic strata in the Kraków–Rzeszów area (SE Poland)
    Autorzy:
    Kosakowski, P.
    Więcław, D.
    Kotarba, M. J.
    Kowalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058966.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Carpathian Foredeep substratum
    Mesozoic strata
    Middle Jurassic source rock
    petroleum geochemistry
    quality of source rocks
    Opis:
    The Mesozoic strata in the southeastern Poland were geochemically characterized to determine their hydrocarbon potential on the basis of 483 core samples from 36 boreholes. The Lower and Middle Triassic, Middle and Upper Jurassic, and Lower and Upper Cretaceous turned out to be highly variable. Middle Jurassic rocks represent the highest geochemical quality. Their total organic carbon (TOC) contents range between 0.0 and 17.0 wt.%, with a median of 0.89 wt.%. The highest TOC was observed in the rocks of the Tarnawa 1 borehole. In the remaining boreholes analysed the organic carbon contents were much lower and usually did not exceed 1 wt.%. Gas-prone Type-III kerogen with an admixture of Type-II kerogen is present in the study area. The lowest TOC values were observed in the Cretaceous rocks, where median values were 0.05 wt.% and 0.04 wt.% for Upper Cretaceous and Lower Cretaceous strata respectively. Low TOC contents were also observed in the Lower Triassic and Upper Jurassic strata. Accordingly, those horizons could not be regarded as effective source rocks. The petroleum potential of these stratigraphic horizons is additionally significantly reduced by low maturity, below the threshold for the generation of hydrocarbons. The Mesozoic organic matter was found to be generally immature, i.e. below 0.5% of vitrinite reflectance.
    Źródło:
    Geological Quarterly; 2012, 56, 1; 139-152
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potencjał węglowodorowy skał macierzystych i geneza gazu ziemnego akumulowanego w utworach miocenu zapadliska przedkarpackiego w strefie Rzeszowa
    Hydrocarbon potential of source rocks and origin of natural gases accumulated in Miocene strata of the Carpathian Foredeep in Rzeszów area
    Autorzy:
    Kotarba, M. J.
    Więcław, D.
    Kosakowski, P.
    Kowalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074398.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    zapadlisko przedkarpackie
    miocen autochtoniczny
    kopalna substancja organiczna
    geochemia
    potencjał węglowodorowy
    gaz ziemny
    izotopy trwałe
    Carpathian Foredeep
    autochthonous Miocene
    organic matter
    hydrocarbon potential
    methane
    gas origin
    microbial processes
    organic geochemistry
    stable isotopes
    Opis:
    In the autochthonous Upper Badenian and Lower Sarmatian strata of the Carpathian Foredeep in the Rzeszów area the total organic carbon (TOC) contents vary from 0.02 to 1.26 wt. %(average 0.64 wt. %). Geochemical studies on the dispersed organic matter demonstrated the presence of gas-prone type III (humic) kerogen with small admixtures of algal type II kerogen. At depths less than 2,500 metres the organic matter is immature, thus microbial processes predominated. Methane concentration in natural gases accumulated within Miocene strata usually exceeded 94 vol. %and was generated by microbial reduction of carbon dioxide. Microbial methane was generated mainly during deposition of autochthonous Miocene sediments, but it is possible that this process continues today on a small scale. Higher gaseous hydrocarbons (mainly ethane and propane), which are usually minor constituents (concentrations less than 0.4 vol. %), were generated during diagenetic processes and at the initial stage of the low-temperature thermogenic processes. The slight changes in the geochemical indices of dispersed organic matter and isotope ratios of natural gases with depth are evidence of the homogeneity of deposition of humic organic matter in shallow marine basin during the Late Badenian and the Early Sarmatian and the fact that similar gas generation conditions can be found in the Miocene sequence. Generation and accumulation of microbial methane and the formation and charging multiple stacked reservoirs within the autochthonous Miocene strata, e.g., Palikówka, Jasionka, Stobierna and Terliczka deposits, was facilitated by rhythmic and cyclic deposition of clays and sands and their very high sedimentation rate.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 1; 67--76
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin and maturity of oils in the Ukrainian Carpathians and their Mesozoic basement
    Autorzy:
    Więcław, D.
    Kotarba, M. J.
    Kowalski, A.
    Koltun, Y. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058970.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Ukrainian Carpathians
    Carpathian Foredeep
    biomarkers
    stable carbon isotopes
    Opis:
    Geochemical characteristics of 25 oils collected from Skiba Unit of the Outer Carpathians, Boryslav-Pokuttya Unit of the Carpathian Foredeep and their Mesozoic basement in the western Ukraine are presented in the paper. The first recognised oil family consists of almost all oils accumulated in the flysch sequence of the Outer Carpathians and the Carpathian Foredeep which have very similar geochemical characteristics. These oils were generated from Type II or II/III kerogen deposited in clastic sediments. They are low-sulphur and migrated short distances. Slight biodegradation processes are visible only in oils accumulated in shallow deposits in the Skiba Unit. Their source rocks are the Oligocene Menilite Shales from the Boryslav-Pokuttya Unit. Oils from the Kokhanivka and Orkhovychi deposits (the Mesozoic basement of the Carpathian Foredeep) constitute the second family. These oils are extremely heavy, high-sulphur and were generated from high-sulphur Type IIS kerogen deposited in the carbonate environment. The most probable source rocks for these oils are the Upper Jurassic strata. Oil collected from the Vola Blazhivska deposit (the Boryslav-Pokuttya Unit) shows intermediate parameters between the oil families described above. It is characterized by the presence of oleanane and high sulphur content. It was generated from the Menilite Shales containing high-sulphur kerogen. All oils were generated at an early stage or the peak of oil window.
    Źródło:
    Geological Quarterly; 2012, 56, 1; 158-168
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic correlation of source rocks and natural gas in the Polish Outer Carpathians and Paleozoic–Mesozoic basement east of Kraków (southern Poland)
    Autorzy:
    Kotarba, M. J.
    Więcław, D.
    Bilkiewicz, E.
    Dziadzio, P.
    Kowalski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060588.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polish Outer Carpathians
    Paleozoic–Mesozoic basement
    source rock potential
    natural gas
    biomarkers
    stable carbon
    hydrogen isotopes
    nitrogen isotopes
    Opis:
    Natural gas-source rock correlations in the Polish Outer Carpathians and Paleozoic–Mesozoic basement in the Kraków–Brzesko–Nowy Sącz area (southern Poland) have been established. In the Dukla and Sub-Silesian units, mixed kerogen Type-II/III or III/II occurs. The organic matter is immature or low-mature. The Oligocene Menilite beds of the Silesian Unit are rich in TOC and contain gas-prone Type III kerogen of low maturity. In the Paleozoic–Mesozoic basement, the TOC content and residual hydrocarbon potential vary in the Middle and Upper Devonian strata, Mississippian carbonate and clastic facies and Middle Jurassic strata. The Paleozoic strata are capable of thermogenic hydrocarbon generation, while organic matter in the Middle Jurassic rocks is generally immature. Gaseous hydrocarbons accumulated both in the Silesian and Dukla units of the Polish Outer Carpathians and in the Mesozoic basement are genetically related to thermogenic and microbial processes. The Outer Carpathian natural gas was generated mainly from the Type-II/III kerogen of the Oligocene Menilite beds. The thermogenic gases from the Mesozoic basement were generated from Devonian and Mississippian (carbonate) Type-II and mixed II/III kerogens and probably from Silurian/Ordovician Type-II kerogen and Middle Jurassic Type-III/II kerogen occurring at more than 7 km depth. Microbial methane migrated into the Outer Carpathian flysch succession from the Miocene strata of the Carpathian Foredeep.
    Źródło:
    Geological Quarterly; 2017, 61, 4; 795--824
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Habitat and hydrocarbon potential of the lower Paleozoic source rocks in the Polish part of the Baltic region
    Autorzy:
    Kowalski, A.
    Więcław, D.
    Grotek, I.
    Kotarba, M. J.
    Kosakowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059076.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Baltic Region
    northern Poland
    source rock
    hydrocarbon potential
    Lower Paleozoic
    Opis:
    The quantity, genetic type and maturity of organic matter dispersed in the Lower Cambrian to the uppermost part of the Silurian (Pridoli) sequence of the Polish part of the Baltic region was determined based on the results of geochemical analyses of a total of 1377 rock samples collected from 38 onshore and offshore boreholes. The best source rocks were found in the Upper Cambrian-Tremadocian succession where present and initial total organic carbon (TOC) contents are up to ca. 18 and 20 wt.%, respectively. Caradocian (Ordovician) strata can be considered as an additional source of hydrocarbons. In the individual boreholes median present and initial TOC contents vary from 0.5 to 3.3 wt.% and from 1 to 6 wt.%, respectively. The Llandovery (Silurian) strata reveal moderate and locally high hydrocarbon potential of the source rocks. The present TOC content reaches locally 10 wt.% (usually 1-2 wt.%). Another source of hydrocarbons can be clayey intercalations within the Middle Cambrian strata. Their organic matter content rarely exceeds 1 wt.%, being often a result of advanced organic matter transformation. In all lower Paleozoic strata investigated from the Polish part of the Baltic region oil-prone, low-sulphur Type-II kerogen occurs, deposited in anoxic or sub-oxic conditions. The maturity of all source rocks changes from the initial phase of the low-temperature thermogenic processes in the northeastern part to the overmature stage in the southwestern part of the study area.
    Źródło:
    Geological Quarterly; 2010, 54, 2; 159-182
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation
    Autorzy:
    Peryt, T. M.
    Durakiewicz, T.
    Kotarba, M. J.
    Oszczepalski, S.
    Peryt, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058984.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Upper Permian
    Zechstein
    organic geochemistry
    Kupferschiefer
    carbon isotope stratigraphy
    Opis:
    The Kupferschiefer (T1) records a period of basin-wide euxinic conditions, and is thus considered an excellent time-marker in the Zechstein (Lopingian) basin. Previous studies indicated that both the Kupferschiefer and Marl Slate and the overlying Zechstein Limestone (Magnesian Limestone) show remarkable changes in carbon isotopic composition towards higher 131313131313
    Źródło:
    Geological Quarterly; 2012, 56, 2; 285-298
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pochodzenie i zagrożenia siarkowodorem i wysokociśnieniowym gazem ziemnym w złożu kopalń rud miedzi Polkowice-Sieroszowice i Rudna – wstępne badania izotopowe i mineralogiczne
    Origin and hazards of hydrogen sulphide and high-pressure natural gas in deposits of Polkowice-Sieroszowice and Rudna copper ore mines: preliminary isotopic and mineralogical studies
    Autorzy:
    Kotarba, M. J.
    Bilkiewicz, E.
    Manecki, M.
    Pawlik, W.
    Ciesielczyk, A.
    Selerowicz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061828.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    siarkowodór
    gaz ziemny
    geneza
    zagrożenia gazowe
    badania izotopowe
    badania mineralogiczne
    kopalnia miedzi Polkowice-Sieroszowice
    kopalnia miedzi Rudna
    hydrogen sulphide
    natural gas origin
    gas hazards
    isotopic analyses
    mineralogical study
    Polkowice-Sieroszowice copper mine
    Rudna copper mine
    Opis:
    Wyniki badań składu cząsteczkowego i izotopowego (13C/12C w CH4, C2H6, C3H8, iC4H10, nC4H10 i CO2, 2H/1H w CH4 i 15N/14N w N2) dwóch próbek gazu ziemnego występującego w utworach wapienia cechsztyńskiego (Ca1) kopalni Rudna porównano z gazem ziemnym akumulowanym w utworach karbonu, czerwonego spągowca i wapienia cechsztyńskiego (Ca1) monokliny przedsudeckiej oraz gazu wytworzonego podczas pirolizy wodnej z kopalnej materii organicznej utworów dolomitu głównego (Ca2). Badany gaz ziemny charakteryzuje się normalnym składem izotopowym w układzie metan–etan–propan, co świadczy o tym, że powstał w jednej fazie generowania z tej samej skały macierzystej, zawierającej kerogen mieszanego typu II/III, prawdopodobnie w obrębie utworów karbońskich. Na podstawie badań mineralogicznych i izotopowych 13C/12C 12 próbek węglanowych i 34S/35S 14 próbek siarczanowych, pobranych w strefie głębokości eksploatacji rud miedzi od 900 do ok. 1200 m ZG Polkowice-Sieroszowice i Rudna w zakresie współczesnych temperatur od 35 do 45°C, wykazano, że w dwóch próbkach węglanów i w dwóch próbkach siarczanów pobranych z jednego rdzenia zachodzą procesy mikrobialnej redukcji anhydrytu dolnego (Ad1) cyklu PZ1 prowadzące do powstawania siarkowodoru.
    Composition of natural gas from the Zechstein Limestone (Ca1) strata of Rudna mine has been compared with the natural gas from Carboniferous, Rotliegend strata of the Fore-Sudetic Monocline and with gas generated from the organic matter of the Main Dolomite during hydrous pyrolysis experiments. The gas from Rudna mine is characterized by the normal methane–ethane–propane isotopic system which indicates formation in one stage from a single source rock probably of the Carboniferous age containing kerogen of mixed II/III type. Generation of the hydrogen sulphide resulted from the microbial sulphate reduction processes of the basal anhydrite has been proven by mineralogical and isotopic 13C/12C analyses of 12 carbonate and 34S/35S analyses of 14 sulphate samples. These samples were collected in the mine at the depth of about 900–1200 m at temperature range of 35–45°C and two samples of carbonates were taken from one core.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2017, 469; 9--33
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zależność między występowaniem minerałów kruszcowych a charakterystyką geochemiczną materii organicznej w łupku miedzionośnym obszaru złożowego KGHM Polska Miedź S.A.
    Relationship between the occurrence of ore minerals and geochemical properties of organic matter in the Kupferschiefer strata, KGHM Polska Miedź S.A. mining area
    Autorzy:
    Pieczonka, J.
    Więcław, D.
    Piestrzyński, A.
    Kotarba, M. J
    Rożek, R.
    Jedlecki, R.
    Szarowski, W.
    Włodarczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061758.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    łupek miedzionośny
    rozmieszczenie minerałów
    materia organiczna
    wskaźniki TOC
    HI i HI/OI
    obszar złożowy KGHM Polska Miedź S.A.
    Kupferschiefer
    distribution of minerals
    organic matter
    TOC
    HI and HI/OI indices
    KGHM Polska Miedź S.A. mining area
    Opis:
    W pracy przedstawiono charakterystykę okruszcowania i materii organicznej, występujących w łupku miedzionośnym, w wybranych profilach w dowiązaniu do przestrzennego rozkładu mineralizacji kruszcowej oraz parametrów i wskaźników materii organicznej w łupku miedzionośnym obszaru złożowego KGHM Polska Miedź S.A. Próbki skał pobrano w polu górniczym Głogów Głęboki Przemysłowy (5 próbek), oraz w północnej części pola Sieroszowice (11 próbek). W obydwu lokalizacjach opróbowano strefy depresji, charakteryzujące się większą miąższością łupku oraz strefy skłonu elewacji z widocznym wyraźnie ścienieniem łupku i strefy elewacji, gdzie jego miąższość zwykle nie przekracza 0,1 m. Badaniami objęto poziom łupku miedzionośnego, gdyż w nim zachodzi najwięcej zmian oraz jego charakter decyduje o ilości i jakości okruszcowania, w dolnej i górnej części profili złoża. Stwierdzono istotne zależności występujące pomiędzy całkowitą zawartością węgla organicznego i wartościami wskaźników HI i HI/OI materii organicznej a ilością i jakością okruszcowania. Wskaźnik HI wyraźnie koreluje się z zawartością siarczków miedzi. Jednakże wartości HI poniżej 100 mogą wskazywać na jakościową zmianę okruszcowania, w kierunku siarczków z miedzią dwuwartościową np. kowelinu. Niskie wartości wskaźnika HI/OI odpowiadają próbkom pochodzącym ze strefy przejściowej, gdzie zawartość minerałów Cu jest zmienna.
    General characteristics of ore minerals and organic matter in selected areas of the KGHM PM S.A are discussed in the paper. For the study, 5 samples from the Industrial Głogów Głęboki field and 11 samples from the Sieroszowice mining field have been collected At both locations, sampling was carried out from three areas: (I) the depression zone characterized by a relatively high thickness of the Kupferschiefer, (II) the elevation slope with a pronounced decrease of thickness, and finally (III) from the elevation where the Kupferschiefer thickness usually does not exceed 0.1 m. Detailed studies have been carried out on samples from the Kupferchiefer, because this horizon heavily affects the quantity and quality of ore mineralization in other parts of the economic ore deposit. Important relationships between the TOC content, HI and HI/OI indices and the quantity and quality of minerals is discussed. The hydrogen index is well correlated with the quantity of copper sulphides; however, its values below 100 may show quality changes of copper sulphides from Cu+ to Cu2+ (covellite). A low value of the HI/OI index represents samples from the transition zone, were sulphide contents are variable.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2017, 468; 9--27
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geneza gazu ziemnego akumulowanego w utworach karbonu i czerwonego spągowca w nadbałtyckiej części Pomorza Zachodniego
    Origin of natural gases accumulated in Carboniferous and Rotliegend strata on the Baltic part of the Western Pomerania
    Autorzy:
    Kotarba, M.
    Pokorski, J.
    Grelowski, C.
    Kosakowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074397.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Pomorze Zachodnie
    karbon
    czerwony spągowiec
    gaz ziemny
    izotopy trwałe
    geochemia
    Western Pomerenia
    Carboniferous
    Rotliegend
    petroleum geochemistry
    methane
    gas origin
    stable isotopes
    Opis:
    Origin of natural gas of Gorzysław, Białogard and Daszewo fields from Lower and Upper Carboniferous, and Rotliegend reservoirs on the Baltic part of the Western Pomerania was characterized by means of geochemical methods. The results of molecular analyses as well as stable carbon isotope analyses of methane, ethane, propane and carbon dioxide, stable hydrogen isotope analyses of methane and stable nitrogen isotope analyses of gaseous nitrogen enabled the determination of gas origin. Gaseous hydrocarbons and carbon dioxide originated from thermogenic processes from type III kerogen with small component of type II kerogen. At least two phases of gas generation took place: the first one at the stage of 0.6 to 0.8%, and the other one at the stage of 1.4 to 1.8% maturity of source rocks in the vitrinite reflectance scale. Gaseous hydrocarbons generated from source rocks within the Upper Carboniferous (Wesphalian) and Lower Carboniferous (Visean) strata. Nitrogen probably originated during thermocatalytic processes of organic matter transformation and partly in abiogenic processes.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 5; 425--433
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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