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    Wyświetlanie 1-8 z 8
    Tytuł:
    Anizotropia akustyczna w utworach wapienia cechsztyńskiego (zachodnia Polska)
    Acoustic anisotropy studies in Zechstein Limestone deposits (western Poland)
    Autorzy:
    Poszytek, Anna
    Łukaszewski, Paweł
    Włodarczyk, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/2076189.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    wapień cechsztyński
    anizotropia akustyczna
    dolomit
    pułapki gazowe
    Zechstein Limestone
    acoustic anisotropy
    dolomite
    gas traps
    Opis:
    In September2009, gas and rock were ejected from the roof of the excavation at the Rudna copper mine of KGHM Polska Miedź S.A. The ejection occurred as a result of an unsealing of a small gas trap locateda few metres above the roof of the excavation within the dolomites of the first Zechstein cyclothem (PZ1). In order to identify the nature of the reservoir rock for natural gas, microscopic observations and X-ray microtomography were performed and compared with the results of the acoustic anisotropy tests. The obtained results indicate that, based on well-recognized petrological rocks, the results of acoustic anisotropy can be successfully applied as diagnostic for the recognition of rocks of various structures, textures and porosities.
    Źródło:
    Przegląd Geologiczny; 2021, 69, 6; 386--388
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oil- and gas-bearing sediments of the Main Dolomite (Ca2) in the Międzychód region: a depositional model and the problem of the boundary between the second and third depositional sequences in the Polish Zechstein Basin
    Autorzy:
    Jaworowski, K.
    Mikołajewski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2066024.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polskie Zagłębie Cechsztyn
    stratygrafia
    dolomit główny
    Polish Zechstein Basin
    Main Dolomite
    depositional model
    sequence stratigraphy
    Opis:
    The Polish Zechstein Basin was a tideless sea dominated by storms. Main Dolomite deposits of the Miedzychód region were deposited: a) on the carbonate platform (in the environments of the outer barrier, inner barrier and high- and low-energy platform flat); b) on the platform slope; c) at the toe-of-slope; d) on the basin floor. The best reservoir properties are recorded in shallow-marine deposits of the outer and inner barriers and in deep-sea sediments of the toe-of-slope (turbidites and debrites). Rich reserves of crude oil and natural gas were discovered both on the carbonate platform (the Miedzychód and Grotów deposits) and at its toe-of-slope (the Lubiatów deposit). The Main Dolomite sediments are wholly included in the second depositional sequence (PZS2 sensu Wagner & Peryt, 1997). The maximum flooding surface of the PZS2 sequence within the platform, its slope and toe-of-slope, runs along the A1g/Ca2 boundary. In the basinal zone, its correlative equivalent is a hard ground observed within the Main Dolomite carbonate rhythmites. The boundary between the second and third (PZS2/PZS3) depositional sequences (corresponding to the ZS3/ZS4 sequence boundary in the German Basin) runs on top of the Main Dolomite carbonates (on the platform slope, at the toe-of-slope and on the basin floor) and above top of the Main Dolomite carbonates, within the lower part of the Basal Anhydrite (on the platform).
    Źródło:
    Przegląd Geologiczny; 2007, 55, 12/1; 1017-1024
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deterioracja ścian drogi wspinaczkowej na Niżnie Jasiowe Turnie (Tatry Zachodnie) spowodowana procesami naturalnymi oraz działalnością taternicką
    Indications of deterioration of the walls of the climbing route on the Niżnie Jasiowe Turnie Peak (Western Tatra Mts.) caused by natural weathering processes and mountaineering activities
    Autorzy:
    Rembiś, Marek
    Jaranowska, Maria
    Masny, Alicja
    Powiązania:
    https://bibliotekanauki.pl/articles/20212513.pdf
    Data publikacji:
    2023
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Turnie Niżnie Jasiowe
    dolomit warstwowy
    brekcja dolomitowa
    zajęcia alpinistyczne
    Niżnie Jasiowe Turnie Peak
    layered dolomite
    dolomitic breccia
    mountaineering activities
    Opis:
    In the Tatra National Park, mountaineering is allowed exclusively in designated areas. Despite the prohibition of climbing due to the legal regulations, there are other climbing routes in the Western Tatras, including those marked out on the Niżnie Jasiowe Turnie Peak. Observations made in the course of the present work prove that this route is in constant use by mountaineers. The Polish Mountaineering Association, carrying out actions to make new areas available for climbing and caving activities, is involved in performing environmental impact assessments of such projects. The trend of such measures includes the present work, which focuses on climbing route No. 15 “Muskatówka” on the Niżnie Jasiowe Turnie Peak. The purpose of the study was to show the indications of deterioration of the rock wall caused by mountaineering activities and natural weathering processes, and to assess the resistance of the rock bed to such destructive factors. The lithological variability of the rocks was characterized, their physical properties were studied, and their frost resistance, microhardness and abrasiveness were determined. The results of Cerchar’s abrasiveness were used to assess the susceptibility of the rock to scratching by metal elements of climbing equipment. The study showed that the impact of mountaineering activities on the deterioration of the wall of the climbing route on the Niżnie Jasiowe Turnie Peak is insignificant. Simultaneously, it was observed that the destruction of analysed rocks is caused to a much greater extent by natural weathering processes. In addition, the favourable physical-mechanical properties of the rocks outcropping in the climbing wall create the possibility of using the so-called “own belay” during climbing, instead of fixed belay points. In a protected area such as the Tatra National Park, it is increasingly necessary to take into account its many functions and meet the expectations of the various users of this “common good”. It is therefore indispensable to discuss the possibility of making new areas available for climbing activities.
    Źródło:
    Przegląd Geologiczny; 2023, 71, 1; 2-11
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza mikrofacjalna dolomitu głównego (Ca2) we wschodniej części wielkopolskiej platformy węglanowej
    Microfacies analysis of the Main Dolomite (Ca2) in the eastern part of the Wielkopolska Carbonate Platform (W Poland)
    Autorzy:
    Krzyżak, Ewelina
    Powiązania:
    https://bibliotekanauki.pl/articles/2075967.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    basen permski
    główny dolomit cechsztyński
    Ca2
    platforma węglanowa
    analiza mikrofrakcji
    Permian Basin
    Zechstein Main Dolomite
    carbonate platform
    microfacies analysis
    Opis:
    Investigation of the Permian Basin in the western part of the Polish Lowland was initiated in 1961 when the Rybaki field was discovered - the first one outside the Carpathians in Poland. The Main Dolomite (Ca2) in the eastern part of the Wielkopolska Platform, located in western Poland, is characterized by a significant variety of microfacies, hence this research is aimed at better interpretation and understanding of depositional environments of current reservoir rocks as well as possibility of identification of facies distribution within the investigated carbonate platform. A detailed microfacies analysis of the Main Dolomite was conducted, which was supported by core logging. The author interpreted depositional environments and generated a 3D model of the top of the Main Dolomite using seismic reflection data. An attempt to correlate microfacies between the analyzed wells was also performed. Integrated analyses of thin sections and drill cores from 4 wells allowed me to interpret the depositional environments of the Main Dolomite. The generated 3D model of the top of the Main Dolomite provided a better insight into subsurface tectonics, paleogeography of the analyzed area and a better understanding of depositional lithofacies environments.
    Źródło:
    Przegląd Geologiczny; 2019, 67; 172--175
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kamienie i znaki apotropaiczne w murach romańskich kościołów w Siewierzu i Mokrsku Dolnym
    Stones and apotropaic marks in the walls of the Romanesque churches in Siewierz and Mokrsko Dolne (S Poland)
    Autorzy:
    Bromowicz, Jan
    Magiera, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2074300.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    okres romański
    kamieniarstwo
    dolomity triasu środkowego
    wapień pińczowski
    znaki apotropaiczne
    Romanesque period
    masonry
    Middle Triassic dolomite
    Pińczów limestone
    apotropaic marks
    Opis:
    Sacral edifices, in particular churches, no matter an epoch, were created of the most imposing and durable building material, mostly stone, available in the area or imported. Identification of the stone is crucial for conservation and reconstruction. However, in many cases, it is not done properly. Thorough mineral and geological studies on the stones and their provenance are thus strongly advisable. Romanesque churches in Siewierz and Mokrsko have recently been subject to such studies. They are located in different geological regions, which obviously reflected in different stones used for their construction. Church in Siewierz (founded probably at the beginningof the twelfth century) was constructed mainly of well-shaped regular blocks of local “Diplopora” dolomite (Middle Triassic). Only a few (out of a few hundred) blocks represent sandstone. Their provenance is unclear (Carboniferous or Lower Triassic sandstones that occur SW of Siewierz?). Church in Mokrsko (erected probably in the first quarter of the thirteenth century) was originally built of also well-shaped regular blocks of limestone and sandstone. They are: very typical for the area Pińczów (“Lithotamnium”), limestone (Neogene), and Upper Triassic sandstone. The former shows up on the surface a few km E of Mokrsko, the latter occurs ca 10 NE of the site. The distribution of the stones and sizes of the blocks shows some regularity. Bigger and of more uniform size blocks were used in the parts of the buildings located closer to the high altar, it is in the apse of the church in Siewierz and the presbytery in Mokrsko. It seems clearly connected with special attention paid to those parts of the temples. Moreover, resistant sandstone was used more frequently than soft limestone in lower parts of the walls in Mokrsko, more exposed to the action of water raised from the ground. Numerous caverns, holes, and crevices have been spotted on external surfaces of the dolomitic and sandstone blocks. Caverns in the dolomites (in Siewierz) developed naturally, while those in the sandstones (in Mokrsko) have obvious anthropogenic provenance. They are interpreted widely in the literature as apotropaic marks. Here it seems that excavation of stone sand and dust for magic consumption by humans or livestock or(and) ignition of holy fire could be reasons for the scratching and drilling.
    Źródło:
    Przegląd Geologiczny; 2022, 70, 2; 91--99
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uwagi o zawartości pierwiastków ziem rzadkich w wapieniach i dolomitach z okolic Krakowa
    Rare-earth elements of limestone and dolomites in the Kraków area (southern Poland)
    Autorzy:
    Vierek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074393.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    dolomityzacja
    dolomit
    wapień
    pierwiastki ziem rzadkich
    pierwiastek śladowy
    górna jura
    Kraków
    limestone
    dolomite
    dolomitization
    rare-earth element
    Upper Jurassic
    Cracow
    Opis:
    Rare-earth elements (REE) were determined for the Upper Jurassic limestone and dolomites from the following outcrops: Góra OEw. Anny, Kostrze Quarry, Księża Góra, and Skały Twardowskiego. REE patterns are similar for all the investigated samples. Dolomites and limestone are enriched in light REE, they exhibit positive La anomalies, and negative Ce and Eu anomalies. Negative Ce and Eu anomalies are typical for oxidizing environments during dolomitization processes. Distinct enrichment in light REE comparing to heavy REE indi-cates that the sea water was not the only component of dolomitization fluids.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 5; 413--417
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Złoża węglowodorów w utworach cechsztyńskiego dolomitu głównego (Ca2) na bloku Gorzowa
    Hydrocarbon fields in the Zechstein Main Dolomite (Ca2) on the Gorzów Block (NW Poland)
    Autorzy:
    Czekański, E.
    Kwolek, K.
    Mikołajewski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074806.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    cechsztyński dolomit główny
    blok Gorzowa
    złoża ropy naftowej i gazu ziemnego
    Zechstein Main Dolomite
    Gorzów Block
    oil and gas fields
    Opis:
    By discoveries of hydrocarbon deposits in the Polish part of the Southern Permian Basin, Western Poland became a key explorational area. The most spectacular discoveries have been done on the Gorzów Block which borders the Fore-Sudetic Monocline from the south and the Szczecin Swell from the north. This is the area where the biggest oil field - Barnówko-Mostno-Buszewo (BMB) - have been discovered and the group of oil and gas deposits Lubiatów-Międzychód-Grotów (LMG). Detailed litho- facies analysis of Main Dolomite carbonates and seismic surveys (mainly 3D) contributed to good recognition of depositional architecture in this part of the Main Dolomite basin. An interesting issue is the relationship of the discovered deposits with carbonate depositional zones and diverse chemical composition of hydrocarbons. Most of deposits is related to carbonate platforms and microplatforms. Less important are platform slopes but basinal zone is and was considered as the area where source rocks occur. Discovery of the Lubiatów oil deposit at the foot of the Grotów Peninsula opened new possibilities in searching for hydrocarbons. Later negative results of drillings in this zone did not affected the fact that there are still explorational hopes for this type of carbonates. Hydrocarbons which can still be discovered in this interval are still not known based on calculations done in the recent years. It seems, that better geochemical recognition and advanced look on diagenetic evolution and depositional architecture will bring about new discoveries in the Main Dolomite interval on the Gorzów Block.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 8; 695-703
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kryteria identyfikacji obiektów litofacjalnych jako potencjalnych pułapek złożowych w utworach dolomitu głównego (Ca2) u podnóża platform i mikroplatform węglanowych w środkowo-zachodniej Polsce
    Criteria of identification of lithofacies objects as potential hydrocarbon traps in the Main Dolomite (Ca2) strata at the toe-of-slope of carbonate platforms and microplatforms in the central-western Poland
    Autorzy:
    Kwolek, K.
    Mikołajewski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074775.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    cechsztyński dolomit główny
    zbocze platformy węglanowej
    pułapki litologiczne
    zdjęcie sejsmiczne 3D
    Zechstein Main Dolomite
    carbonate platform slope
    3D seismics
    Opis:
    In terms of oil reserves of Poland, the Lubiatów oilfield in the Międzychód area is the second largest after BMB oilfield. The discovery of this structural-lithological trap in a toe-of-slope position in relation to the Main Dolomite (Ca2) carbonate platform opened a new hydrocarbon opportunities in this unit. One of the conditions for trap occurrence in the "Lubiatów-type" deposits of the toe-of-slope zone in relation to Ca2 carbonate platforms and microplatforms is the presence of appropriate reservoir facies. These facies are characterized by occurrence of thick packets of porous Main Dolomite rocks (Ca2 lithosomes) composed mostly of sublittoral, redeposited carbonate sands (packstones, floatstones, sporadic rudstones), deposited below wave-base and resulting from activity of traction and suspension currents and gravity flows. The only method to detect such facies is via high resolution seismic images, preferably from three-dimensional (3D) surveys. Unfortunately, intensive exploration studies carried out in this zone between 2005-2008 did not bring measurable effects, that is discovery of new hydrocarbon deposits. Several boreholes drilled in Ca2 lithosomes found water-bearing horizons only. In several other dry holes, none of the facies assumptions made prior to drilling were confirmed. Comparison of seismic images of area of those dry holes made it posssible to find a geometric criterion for seismic detection of Ca2 lithosomes located at the toe-of-slope of carbonate platforms and microplatforms. This geometric criterion, along with the seismological one, should constitute an important interpretational premise in identifying or excluding areas with potential hydrocarbon traps in the Main Dolomite rocks in the area under study.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 5; 426-435
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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