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Tytuł:
Geology and resources of salt deposits in Poland: the state of the art
Autorzy:
Czapowski, G.
Bukowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/2059028.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Badenian
Zechstein
salt deposits
Opis:
Rock salt occurs in Poland (Central Europe) in two salt-bearing formations of upper Permian (Zechstein) and Neogene (Middle Miocene, Badenian Stage) age, while potash salts are only of Permian age. The total resources of rock salt are >106 X 10981 X 109669
Źródło:
Geological Quarterly; 2010, 54, 4; 509-518
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bryozoans (trepostomes and fenestellids) in the Zechstein Limestone (Wuchiapingian) of the North Sudetic Basin (SW Poland : palaeoecological implications
Autorzy:
Hara, U.
Słowakiewicz, M.
Raczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/2060558.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
bryozoans
Late Permian
Zechstein
taxonomy
ecology
Opis:
A recently investigated Zechstein Limestone (Ca1, Wuchiapingian) bryozoan fauna from the Polish part of the Southern Permian Basin (SW Poland) is dominated volumetrically and taxonomically by fenestellids. In total six species from five genera are recognized, comprising two species of trepostomes belonging to Dyscritella Girty, 1911 and four fenestellids attributed to Kingopora Morozova, 1970, Kalvariella Morozova, 1970, Acanthocladia King, 1849 and Spinofenestella Termier and Termier, 1971. The greatest biodiversity of the bryozoans in the Ca1 profiles studied is within the slope facies where large, fan-shaped and funnel-shaped reticulate fenestellid colonies up to 10 cm high dominate. In contrast, bryozoans in the marginal (proximal) parts of the basin mostly comprise trepostomes, represented by encrusting plate-like or coil-shaped colonies of Dyscritella Girty, and commonly broken branched colonies of Acanthocladia King. The changes in the biotic composition of the bryozoans and the presence of a dominant colony growth form in the stratigraphical profile of the Ca1 reflect the depositional environment and water energy. These factors stimulate the successive stages of the development of the biota and their settlement, marked by the rich productid-fenestellid assemblages typical of the offshore setting, with the maximum depth in the middle part of the Ca1 in the Grodziec Syncline. The proximal tempestites and foreshore facies of the upper part of the Ca1 (Leszczyna Syncline) terminate the sedimentary cycle of the Ca1, with the remnant, broken bryozoans of Acanthocladia and fenestellids. The relationship between the taxonomic composition, colony growth-patterns, associated biota, and sedimentary structures points to slow sedimentation rate on slope and basin floor of the Ca1 carbonate platform. The fenestellids which are dominated in the studied biota by the reticulate and pinnate colonies of Spinofenestella, Kingopora, Kalvariella and Acanthocladia mark a close palaeogeographical link with the Zechstein (Ca1) bryozoans of Great Britain, Germany and the southern Baltic region.
Źródło:
Geological Quarterly; 2013, 57, 3; 417--432
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sulphur and oxygen isotope signatures of late Permian Zechstein anhydrites, West Poland: seawater evolution and diagenetic constraints
Autorzy:
Peryt, T. M.
Halas, S.
Petrivna Hryniv, S.
Powiązania:
https://bibliotekanauki.pl/articles/2059022.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Permian
Zechstein
marine evaporites
sulphate isotopes
Opis:
The stable oxygen and sulphur isotope ratios of 52 anhydrite samples from three Zechstein anhydrite units (Lower Anhydrite, Upper Anhydrite and Basal Anhydrite) of West Poland show d18O values vs. VSMOW in the range of 9.4 to 15.5% (mean of 12.6 š1.3%), and d34S values vs. VCDT between 9.6 to 12.6%o (mean of 11.4 š0.6%o). A generally uniform distribution pattern of both isotopic values throughout the section, although with some random variation, implies that sulphate ions were sufficiently supplied and the basin was open during sulphate deposition. There is a slight stratigraphic differentiation of both the d18O and d34S values: the highest mean values are shown by the Upper Anhydrite and the lowest average values occur in the Basal Anhydrite. The correlation between d18 O and 8 S values is statistically significant only in case of the Basal Anhydrite. A wide range of oxygen isotopic ratios (from 11.6 to 25. l%o), with only several samples having d18O values that fall within the range of late Permian seawater, have been recorded in anhydrite cements and nodules that occur in the Main Dolomite rocks. Sulphur isotope ratios of anhydrite cements (range of 7.6 to 12.9%o, average of 10.7 š1.4%o) tend to reflect the late Permian sulphur isotopic signature of sulphate in seawater. The higher ranges of d18O and d34S values of anhydrite cements and nodules in the Main Dolomite compared to the underlying and overlying anhydrites are due to diagenetic resetting. The conversion of gypsum to anhydrite (often very early and under negligible cover) evidently did not affect the primary marine stratigraphic sulphur isotope composition of the sulphate deposits.
Źródło:
Geological Quarterly; 2010, 54, 4; 387-400
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lithostratigraphic and bromine profile of the Zechstein salt series In the area of borehole M-29 of the Mogilno Salt Dome
Autorzy:
Wachowiak, J.
Powiązania:
https://bibliotekanauki.pl/articles/2192118.pdf
Data publikacji:
2015
Wydawca:
Polskie Stowarzyszenie Górnictwa Solnego
Tematy:
salt deposits
Zechstein
Late Permian
Zechstein evaporites
Zechstein stratigraphy
salt cyclothems
Mogilno salt dome
złoża soli
cechsztyn
późny perm
ewaporaty cechsztyńskie
stratygrafia cechsztynu
cyklotemy solne
wysad solny Mogilno
Opis:
The M-29 exploratory borehole and operating well is located on the Mogilno I deposit in the south-eastern section of the Mogilno Salt Dome (Fig. 2). It was drilled down to the depth of 1,751 m in 2014. The borehole penetrated the evaporites of the Upper Permian (Zechstein) and a sequence of clay-mudstone-sand formations of the Lower Triassic. 11 lithostratigraphic members of the Zechstein salt series, belonging to cyclothems PZ-2, PZ-3, and PZ-4, were separated in the core subjected to our analysis. The salt deposit of the borehole M-29 area had been formed tectonically. The borehole cuts through a deep syncline, filled with the sediments of cyclothems PZ3 and PZ4. The syncline is limited on the ceiling and floor sides by anticlines composed mainly of Na2 rock salt. As a result of the uplift of the two anticline intrusions, the salt layers became strongly folded and formed very steeply. The borehole pierces through the same members several times. Many divisions are reduced in thickness or completely wedged out. No ceiling layers of cycle PZ-4 or evaporites, being older than Older Halite (Na2), were found in the profile. As a result of halokinetic and tectonic deformations, the salt layers became extremely folded and steeply arranged. The layer dip varies from 35° to 90°, mostly 60-80°. Numerous changes of the dip angle and multiple folding are demonstrated by the fact that the borehole often penetrated the same members.
Otwór badawczo-eksploatacyjny M-29 jest zlokalizowany w południowo-wschodniej części wysadu solnego Mogilno, na złożu Mogilno I (Ryc. 2). Został on odwiercony w 2014 r. do głębokości 1751 m. Otwór nawierca ewaporaty późnego permu (cechsztynu) oraz kompleks utworów ilasto-mułowcowo- piaszczystych dolnego triasu. W analizowanym rdzeniu wydzielono 11 ogniw cechsztyńskiej serii solnej cyklotemów PZ-2, PZ-3 i PZ-4. Złoże solne w rejonie otworu M-29 jest uformowane tektonicznie. Otwór przewierca głęboką synklinę, wypełnioną osadami cyklotemów PZ3 and PZ4. Synklina ograniczona jest od stropu i spągu antyklinami, zbudowanymi głównie z soli kamiennej Na2. W wyniku wypiętrzenia tych dwóch intruzji antyklinalnych warstwy solne zostały silnie sfałdowane i zalegają bardzo stromo. Otwór przewierca kilkakrotnie te same ogniwa. Wiele wydzieleń jest zredukowanych lub całkowicie wyklinowanych. W profilu nie stwierdzono warstw stropowych cyklu PZ-4 i ewaporatów starszych niż Starszy Halit (Na2). W wyniku deformacji halokinetycznych i tektonicznych warstwy solne są silnie pofałdowane i zalegają bardzo stromo. Upad warstw waha się od 35 do 90°. Najczęściej jednak wynosi 60-80°. Otwór przewierca wielokrotnie te same ogniwa ze względu na częste zmiany kąta upadu i przefałdowania.
Źródło:
Przegląd Solny; 2015, 11; 81--97
2300-9349
Pojawia się w:
Przegląd Solny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of seismic velocity distribution on the depth imaging of the sub-Zechstein horizons in areas affected by salt tectonics: a case study of NW Poland
Autorzy:
Pietsch, K.
Marzec, P.
Niepsuj, M.
Krzywiec, P.
Powiązania:
https://bibliotekanauki.pl/articles/191765.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
seismic imaging of sub-Zechstein boundaries
velocity models for Zechstein and Mesozoic successions
halokinesis
Mid-Polish Swell
Opis:
Lateral changes in the thickness of strata and petrophysical parameters within the Zechstein succession (salt pillows and domes) can cause many problems in seismic exploration of the aeolian Rotliegend formations, which are prospective for hydrocarbons. An assessment of the influence of halokinesis on the seismic imaging of the sub-Zechstein strata in NW Poland (Obrzycko–Szamotuły area, to the SW of the Mid-Polish Swell) utilised time-to-depth conversion with different, seismic-geological models. Various, seismic velocities were used in models for the Zechstein and the Mesozoic successions, namely velocities, dependent on the thickness of particular rock successions, on their depths, and velocities, determined from seismic inversion. The results show opposite reflection patterns for the seismic section imaged in the time and depth domains. The synclinal arrangement of the strata boundaries in the depth model is represented by convex-upwards reflection events on the seismic section. The pull-up of reflection events, associated with the sub-Zechstein strata, observed on the seismic sections, is mainly a result of both the greater thickness of the Zechstein salt within the salt structures (pillows, diapirs) and the increase in velocity contrast between the salt body and the Mesozoic strata.
Źródło:
Annales Societatis Geologorum Poloniae; 2012, 82, 3; 263--277
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strontium isotopes in the Zechstein (Upper Permian) anhydrites of Poland: evidence of varied meteoric contributions to marine brines
Autorzy:
Denison, R. E.
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2059197.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polska
Zechstein
Late Permian
anhydrite
strontium isotopes
Opis:
Strontium isotope ratios have been determined on 74 anhydrite samples from seven borehole cores in the Polish Zechstein. Five of the borehole cores are located in the basin and isotope results from these samples show a nearly pure marine signal. Results from one borehole core, located near the Zechstein coastline that migrated through time, record a stronger, in consistent influence of continental strontium to a marine base. Intermittent meteoric influence is recorded in anhydrites from other borehole cores close to the carbonate platform that was emergent during the anhydrite deposition. Consistency of isotope values indicates a marine signal and there is a narrow range in consistent values from 87Sr/86Sr near deltasw –215 (0.70702) for the oldest anhydrites and near deltasw –205 (0.70712) for the youngest an hydrites. Comparison with a sea water 87Sr/86Sr curve based on samples in West Texas and a Permian-Triassic boundary value from China shows that the Polish Zechstein in these seven boreholes is latest Permian in age and major deposition represents a short time interval (~2 million years). Strontium isotope ratios reported by other workers indicate some of the younger Zechstein elsewhere indicate even greater continental influence is in agreement with the interpreted sedimentological set ing for those anhydrites.
Źródło:
Geological Quarterly; 2009, 53, 2; 159-166
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gypsum domes and diapirs: common features in the Zechstein (Upper Permian) of Germany
Autorzy:
Paul, J.
Powiązania:
https://bibliotekanauki.pl/articles/2060043.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Gypsum diapirism
Zechstein
Werra Anhydrite
Leine Anhydrite
Germany
Opis:
The Upper Permian Zechstein Group contains three gypsum horizons of variable thickness. All of them are affected by gypsum diapirism which is not related to salt diapirism. Best areas for observations and descriptions of this phenomenon are outcrops and mining districts around the Harz Mts. The lowermost gypsum member (A1) is overlain by Main Dolomite (Ca2) of the Stassfurt Formation - dolomite showing mudstone and wackestone textures. The gypsum forms cupolas or elongate ridges up to 50 m high, several km long, and may project through its roof. Above the ridges, the Ca2 roof is thinner or completely removed by slumping and sliding. The uplift of the gypsum started very early before the carbonates were completely lithified. All the ridges strike between 90 and 120°, most likely, drawn out by tectonic forces. The Basal Anhydrite (A2) and the Main Anhydrite (A3) are overlain by rock salt and behave in the same manner. Here, too, only the upper parts of the gypsum are involved in the movements. Reasons of the uplift are high water content of gypsum, additional release of water by the conversion of gypsum to anhydrite and, last not least, bouyancy of the light gypsum mud against compact rock salt or semi-lithified carbonates.
Źródło:
Geological Quarterly; 2014, 58, 3; 521--530
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykształcenie i tektonika utworów solnych cechsztynu w wysadzie solnym Góra koło Inowrocławia w oewietle wyników kompleksowych badań geochemiczno-litologicznych w profilach wybranych otworów wiertniczych
Characteristics and tectonics of Zechstein salt rocks of the Góra salt diapir near Inowrocław on the basis of geochemical-lithological study of selected borehole sections
Autorzy:
Czapowski, G.
Tomassi-Morawiec, H.
Tadych, J.
Grzybowski, Ł.
Sztyrak, T.
Powiązania:
https://bibliotekanauki.pl/articles/2074711.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
złoża solne
tektonika
cechsztyn
salt deposits
tectonics
Zechstein
Opis:
Detailed macroscopic profiling of salt cores from selected wells drilled in the Góra salt diapir (central Poland; Fig. 1, 2) and analyses of bromine content made it possible to define and characterize lithostratigraphic units of the Zechstein (Upper Permian) succession (Fig. 3, 4). Interpretation of relations between the units identified in the studied well sections allowed the first schematic reconstruction of internal structure of top part of the salt trunk (Fig. 5). The principal idea of this reconstruction is probable origin of the Góra diapir as a salt trunk with a recumbent fold at the top (Fig. 6A). Subsequent uplift of the diapir and erosion resulted in removal of significant part of younger salt deposits so only those squeezed into the salt trunk interior escaped the erosion (Fig. 6B). Models of internal structure of salt diapirs are of remarkable practical value as they facilitate proper location of the mining works (e.g. leaching wells, galleries, chambers and caverns) and prediction of possible gas and water hazards.
Źródło:
Przegląd Geologiczny; 2009, 57, 6; 494-503
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first microfossil record of ichthyofauna from the Naujoji Akmenė Formation (Lopingian), Karpėnai Quarry, northern Lithuania
Autorzy:
Dankina, D.
Chahud, A.
Radzevičius, S.
Spiridonov, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060600.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
chondrichthyans
actinopterygians
Upper Permian
Zechstein Basin
northern Lithuania
Opis:
The assemblage of rare fish microremains of chondrichthyans and actinopterygians from Upper Permian deposits in Karpénai Quarry in northern Lithuania is described in detail for the first time. The deposits are characterized as reflecting a rapid phase of deposition of the Zechstein Limestone, interpreted as on a shallow shelf above storm-wave base in a proximal part of the Polish-Lithuanian Zechstein Basin. The actinopterygian microremains are represented by various teeth and a few scales from mostly palaeonisciforms and pycnodontiforms. The chondrichthyans are represented by various eusela- chian-type scales and a tooth of ?Helodus sp. The low abundance and low species diversity of the fossil assemblages studied may be due to arid palaeoenvironments that caused locally restricted conditions at this palaeogeographical location.
Źródło:
Geological Quarterly; 2017, 61, 3; 602--610
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evidence of high-temperature rock salt transformations in areas of occurrence of borate minerals (Zechstein, Kłodawa salt dome, Poland)
Autorzy:
Toboła, T. T.
Wachowiak, J.
Powiązania:
https://bibliotekanauki.pl/articles/2059366.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein
salt deposit
hydrothermal conditions
borates
fluid inclusions
Opis:
Occurrences of borate minerals in the Zechstein salt-bearing deposits of the Kłodawa salt dome (central Poland), and the manner of their development, suggest that the minerals were formed at high temperatures, that considerably exceed the temperature estimated from the thermal gradient (~180°C). Research on rock salt and potassium-magnesium salts containing congolite and boracite, respectively, are consistent with high-temperature processes of transformations affecting the salt rocks in certain sections of the salt dome. The chemical composition of, and daughter minerals occurring in, primary fluid inclusions in halite, originating from the congolite zone, indicated a very high proportion of potassium and magnesium in the brines from which the halite crystallised. The thermal transformations observed in inclusions indicate a halite crystallisation temperature exceeding 420°C. Anhydrite crystals, co-occurring with borate minerals, represent unique features as to the distribution and composition of solid and fluid inclusions. These features indicate crystallisation or recrystallisation in conditions that differed considerably from those typical of the salt dome, with the involvement of solutions of changing chemical compositions. The crystals contain multiple solid inclusions of transparent and non-transparent minerals, among which we have focused on carnallite. The relationships of carnallite with liquid and gaseous phases indicate, as in the congolite zone, migration of very highly concentrated brines with respect to potassium and magnesium, or even transport of carnallite in the form of melt (liquid). Measurements of fluid inclusion homogenization temperatures, within the range from 197.8 to 473.8°C, supported a high-temperature origin for these minerals in hydrothermal conditions.
Źródło:
Geological Quarterly; 2018, 62, 1; 134--145
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zechstein (Ca1) limestone-marl alternations from the North-Sudetic Basin, Poland: depositional or diagenetic rhythms?
Autorzy:
Biernacka, J.
Borysiuk, K.
Raczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/2059558.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein
limestone-marl alternations
storm deposits
carbonate diagenesis
Opis:
Limestone-marl alternations constitute a characteristic rock facies within the Zechstein Limestone (Ca1) deposits of the North-Sudetic Basin, Poland. Rhythmites of this type are exposed in a 10-metres section at Nowy Kooeciół, which from the beginning of the last century has been considered representative for this part of the Zechstein basin, and were formerly interpreted as calcareous storm sediments alternating with marls deposited during more quiet conditions. Our results of sedimentological, petrographical and chemical studies suggest that the Nowy Kościół section is a record of distal storm deposits, but that the present-day layering does not precisely reflect the depositional rhythm. Post-depositional changes have overprinted and blurred the original pattern.We propose a model of diagenetic alteration in which dissolution and reprecipitation of calcium carbonate in the shallow subsurface formed new layer boundaries; subsequent modifications during deeper burial followed these early diagenetic changes.
Źródło:
Geological Quarterly; 2005, 49, 1; 1--14
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The isolated Wuchiapingian (Zechstein) Wielichowo Reef and its sedimentary and diagenetic evolution, SW Poland
Autorzy:
Fheed, A.
Świerczewska, A. T.
Krzyżak, A.T.
Powiązania:
https://bibliotekanauki.pl/articles/2060002.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
reef
microfacies
diagenesis
porosity
Zechstein Limestone
Wolsztyn Ridge
Opis:
The development of a relatively small and isolated part of the Wuchiapingian, Zechstein Wielichowo Reef was possible owing to a progressive subsidence and frequent sea level fluctuations. Three biofacies were distinguished within the studied object: (1) a shallow-water and highly energetic Acanthocladia biofacies, dominated by bryozoans and crinoids, with poorly preserved porosity, reduced mainly by calcite cementation and compaction; (2) the Horridonia biofacies comprising numerous brachiopods, preferring a moderate depth of water, with comparably poor porosity; and (3) the Fenestella/Kingopora biofacies rich in fossils of the highest variability, related to the deepest and calmest waters, occurring on the top of the profile and showing a significant effective porosity, reaching almost 13%. Among many diagenetic processes altering the reef, several lines of evidence suggest that it was the meteoric diagenesis to enhance its porosity the most extensively. Since no stromatolites are present, the final sea level decrease is interpreted to be rapid, hence creating conditions favourable for the meteoric dissolution. Some intraparticle porosity, however, seems to be of a depositional origin.
Źródło:
Geological Quarterly; 2015, 59, 4; 762--780
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical and foraminiferal records of environmental changes during the Zechstein Limestone (Lopingian) deposition in Northern Poland
Autorzy:
Peryt, M.
Peryt, D.
Powiązania:
https://bibliotekanauki.pl/articles/2058961.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geochemistry
Polska
carbon and oxygen isotopes
foraminifers
Zechstein Limestone
Opis:
The entire Zechstein Limestone section of the Zdrada IG 8 borehole (Northern Poland) is composed of oncoid packstone that is accompanied by stromatolites in the upper part of the unit. Deposition of the Zechstein Limestone occurred in persistently subtidal environments, above the storm wave base, in mostly dysoxic conditions, and thus these conditions did not differ essentially from those characteristic for the Kupferschiefer strata. The previous supposition of vadose diagenesis is not confirmed by the isotopic study of calcite that showed its clearly marine values (average d1318
Źródło:
Geological Quarterly; 2012, 56, 1; 187-198
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:
Mineralogy and geochemistry of the Tonmittelsalz (z3TM) and Tonbrockensalz (z4TS) as “zuber” equivalents in the German Zechstein (Upper Permian)
Autorzy:
Onneken, J.
Schramm, M.
Hammer, J.
Powiązania:
https://bibliotekanauki.pl/articles/2060085.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
clay-bearing strata
Tonmittelsalz
Tonbrockensalz
Zechstein
zuber
North Germany
Opis:
Two main lithostratigraphic units of clay-bearing rock salt, the Tonmittelsalz of the Leine formation (z3) and Tonbrockensalz of the Aller formation (z4), occur in the German Zechstein (Upper Permian) succession. These units could be equivalents of the Brown Zuber (Na3t) and Red Zuber (Na4t) in the PZ3 and PZ4 cyclothemes of the Polish Zechstein basin. Mineralogical-geochemical investigations of the Tonmittelsalz and Tonbrockensalz were carried out on samples taken from a deep borehole in the Gorleben salt dome in Northern Germany. Even though these units are characterized by a similar mineralogical composition of mainly halite with subordinate quantities of anhydrite and clay minerals, variations in mineral content and fabric were observed. The older Tonmittelsalz rocks document some primary features like chevrons in halite crystals and idiomorphic halite crystals in clay-bearing layers. A brecciated fabric and a vague layering, shown by polarizing microscopy and CT-imaging, indicate a deformation of the younger Tonbrockensalz, which is folded in the deep borehole Go1004. Nevertheless, internal fabrics of clay clasts in the z4TS show an early brecciated and folded fabric during sedimentation or diagenesis. Main component chemistry and REE are comparable in both units, but significant differences were observed for trace element and isotope data. The z3TM rocks contain higher values of trace elements like Liand higher values in REE, while the z4TS rocks are enriched in K. Isotope data of anhydrites of both units correspond to those of the Zechstein. The δ18O values of samples from the Tonbrockensalz display a relatively large range (8.5-11.9‰) and may indicate changing conditions during its formation. In contrast, only minor variations in the δ34S of samples from the Tonbrockensalz and in both isotope compositions of samples from the Tonmittelsalz have been documented.
Źródło:
Geological Quarterly; 2018, 62, 4; 896--916
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dolomite problem : evidence from 3D modeling, XRD and geochemical data of Zechstein reefs (Upper Permian, Germany)
Autorzy:
Blendinger, Wolfgang
Powiązania:
https://bibliotekanauki.pl/articles/2060255.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein
dolomite
limestone
isotopes
3D modeling
fluid flow
Opis:
Three-dimensional modeling of the limestone and dolomite distribution in an Upper Permian (Zechstein) stromatolite-bryozoan reef, ~500 m in diameter and 35 m thick (77 borehole cores, 172 data points), shows that dolomite occurs as laterally and vertically discontinuous intervals. The prevailing mineral phases are near-stoichiometric dolomite and Mg-free calcite (370 XRD and 274 XRF analyses). Both δ13C and δ18O (526 analyses) show a spread of ~10‰ and co-vary with the mineralogy; the heaviest dolomite and calcite δ13C differ by ~1.5‰. Diagenetic modifications caused by flowing meteoric fluids could account for the observed “inverted J” trend of stable and the radiogenic signature of 87Sr/86Sr (23 analyses), but neither vertical nor horizontal gradients occur in the reef modeled. Because the dolomite geometries are incompatible with those predicted by fluid flow models, and the limestone-dolomite difference in δ13C overlaps estimates of isotope fractionation associated with Mg content, the dolomite studied was a depositional Very High Mg Calcite recrystallized to dolomite in a semi-closed diagenetic system rather than a Low Mg Calcite transformed by a dolomitization process. The isotope pattern suggests biogenic fractionation and/or loss of heavy stable C and O and light Sr isotopes during diagenesis.
Źródło:
Geological Quarterly; 2020, 64, 3; 692--710
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controls on the distribution of rare earth elements in the Kupferschiefer series of SW Poland
Autorzy:
Oszczepalski, S.
Chmielewski, A.
Mikulski, S.
Powiązania:
https://bibliotekanauki.pl/articles/2060523.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
rare earth elements (REE)
redistribution
Kupferschiefer
Zechstein
SW Poland
Opis:
This study deals with the spatial distribution and the PAAS-normalized patterns of rare earth elements (REE) studied by ICP-MS in the Kupferschiefer series of SW Poland. The most characteristic feature is a progressive enrichment in REE content (including Y and Sc) outward from the rocks with pyritic and Pb-Zn mineralisation, across the rocks with copper mineralisation, towards the oxidized (Rote Fäule) areas. The same trend can also be observed with respect to LREE, MREE and HREE. Whereas REE distribution diagrams for shales with pyrite and Pb-Zn mineralisation are almost flat, diagrams for shales with hematite and copper mineralisation are convex-upward and the strongest convexity is attributed to the transition from hematitic alteration to copper-rich rocks. REE distribution diagrams normalized to PAAS show strong MREE enrichment relative to LREE and HREE, which is typically the highest in the hematite zone, lower in shale with copper mineralisation, and the lowest in shales with Pb-Zn and pyrite mineralisation. The systematic increase in the concentration of REE towards the Rote Fäule, and the strong enrichment in MREE in the transition zone are indicative of variable intensity of leaching and formation of the REE enrichments (including MREE) by MREE>HREE>LREE fluids, as evidenced by the MREE-enriched signatures. Overprinting of secondary enrichments over the original REE pattern due to redistribution along the pathways of expanding fluids are postulated to account for the apparent differences in the distribution and concentration of REE (including the MREE-enriched trend) between the oxidized rocks, copper-bearing rocks, and reduced lithologies barren in copper.
Źródło:
Geological Quarterly; 2016, 60, 4; 811--826
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
South-western boundary of the Mid-Polish Trough-new seismic data from the Oświno-Człopa Zone (NW Poland)
Autorzy:
Dadlez, R.
Powiązania:
https://bibliotekanauki.pl/articles/2059707.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein-Mesozoic
Mid-Polish Trough
Pomerania
tectonics
thickness changes
Opis:
The Mid-Polish Swell (MPS), uplifted in the latest Cretaceous-earliest Tertiary at the site of the earlier Permian-Mesozoic Mid-Polish Trough (MPT), is adjoined to the south-west by a chain of salt diapirs which are probably underlain by a system of late Variscan deep faults in the pre-Zechstein basement. The Mesozoic reactivation of this system is responsible for the rapid thickness increase towards the axis of theMPT. Consequently, it may be regarded as the southwestern boundary of the MPT. During the phase of inversion, this system caused the mobilization of the Zechstein salt, the formation of the chain of diapirs and also (indirectly) the uplift of the regional unit of the MPS.
Źródło:
Geological Quarterly; 2005, 49, 4; 471--480
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polyphase dolomitization of the Wuchiapingian Zechstein Limestone (Ca1) isolated reefs (Wolsztyn Palaeo-Ridge, Fore-Sudetic Monocline, SW Poland)
Autorzy:
Jasionowski, M.
Peryt, T. M.
Durakiewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/2060044.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein Limestone
reefs
diagenesis
dolomitization
carbon and oxygen isotopes
Opis:
Dolomitisation was the main diagenetic process in the Upper Permian Zechstein Limestone of the Wolsztyn High-dolomite cementation (“over-dolomitisation”) also occurred. The rocks studied usually have a mixed mineralogy and represent a continuous spectrum from pure limestone to pure dolomite. This is due to varying degrees of dolomitisation, dolomite cementation and dedolomitisation. There are two main types of dolomite: replacement dolomite (mostly planar unimodal dolosparite mosaics that are mainly fabric-destructive) and cement dolomite (planar isopachous rims and pore-filling non-planar saddle-dolomite crystals). The timing of dolomitisation and dolomite cementation is difficult to ascertain, but comparing petrographical and geochemical data indicates that the reef carbonates were dolomitised shortly after deposition in a near-surface sabkha/seepage-reflux and then in burial systems. It seems that many of the dolomites gain their present isotopic composition when buried in relatively high-temperature conditions, as shown by low oxygen isotopic ratios ( δ18O as low as –9‰ PDB) and the presence of saddle dolomite. No isotopic support for a water-mixing mechanism is documented.
Źródło:
Geological Quarterly; 2014, 58, 3; 503--520
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemia i wykształcenie skał zubrowych górnego permu (cechsztyn) z obszaru Polski
Comparative geochemistry and development of the Upper Permian (Zechstein) zuber rocks from Poland
Autorzy:
Tomassi-Morawiec, Hanna
Wachowiak, Jacek
Czapowski, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2061456.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
skały zubrowe
geochemia
cechsztyn
Polska
zuber rocks
geochemistry
Zechstein
Polska
Opis:
Praca prezentuje wyniki szczegółowych badań składu chemicznego skał zubrowych dwu głównych wydzieleń litostratygraficznych w cyklotemowej sukcesji osadów polskiego cechsztynu: zubra brunatnego (Na3t; cyklotem PZ3) i zubra czerwonego (Na4t; cyklotem PZ4) oraz innych cechsztyńskich ogniw i formacji zubrowych wyróżnionych na obszarze Polski. Skały te opróbowano w 2 wysadach solnych (Kłodawa i Mogilno) oraz w profilach 7 otworów wiertniczych. Utwory Na3t w wysadzie Kłodawa cechuje wyższy udział halitu w porównaniu ze skałami Na4t, które zawierają więcej materiału terygenicznego (materiał detrytyczny i substancja ilasta) co wyraża się większą średnią zawartością SiO2, Al2O3, Fe2O3 i K2O oraz wzbogaceniem w Mn, Rb, Zn i Zr w porównaniu z osadami Na3t. Skały Na3t w obu wysadach (Kłodawa i Mogilno) charakteryzują się wyższą średnią zawartością CaO, MgO i Sr w porównaniu z wydzieleniem Na4t, przede wszystkim dzięki wyższemu udziałowi węglanów Ca i Mg (głównie magnezytu) i podrzędnie kalcytu i dolomitu. Zawartość bromu w profilach Na3t w obu wysadach jest wyższa niż w osadach Na4t i jest charakterystyczna dla pierwotnych chlorków wytrącanych z morskiej solanki. Podobną zawartość bromu stwierdzono tylko w niektórych partiach sukcesji Na4t. W niektórych skałach profili Na4t zarejestrowany udział bromu <40 ppm sugeruje, że są one mieszaniną pierwotnych i wtórnych chlorków, powstałych wskutek recyklingu (rozpuszczanie i ponowne wytrącanie) wcześniej osadzonych morskich soli. Zmiany zawartości bromu w profilach opisanego wyżej wydzielenia Na4t oraz w profilach skał zubrowych subcyklotemów cyklotemu PZ4, opróbowanych w wybranych otworach wiertniczych z obszaru Niżu Polskiego wskazują, że środowisko depozycji zubrów ewoluowało od basenu morskiego (dolna część profilu Na4t i osady subcyklotemów PZ4a do PZ4b) do kontynentalnego jeziora solnego (górna część sukcesji Na4t i osady subcyklotemów PZ4c do PZ4e), w którym następowała kumulacja materiału terygenicznego i chlorków wytrąconych głównie z wtórnych, recyklingowych solanek. Udział takich składników jak: SiO2, Al2O3, MgO, K2O i Fe2O3, Rb, Zn i Zr, związanych głównie z obecnością substancji ilastej i materiału detrytycznego jest wyższy w przypadku skał typu zubra bezteksturalnego i warstwowanego w porównaniu z solami kamiennymi i zailonym, warstwowanymi i bezteksturalnymi. Obecność Sr i CaO, związanych z węglanami i siarczanami, jest częściej wyższa w solach kamiennych warstwowanych, gdzie pojawiają się laminy ilasto-anhydrytowe.
The paper presents results of detailed studies of chemical composition of zuber-like rocks of main two zuber lithostratigraphic units of the Polish Zechstein succession: the Brown Zuber (Na3t; PZ3 cyclothem) and the Red Zuber (Na4t; PZ4 cyclothem), as well as of other Zechstein zuber members and formations distinguished in Poland. These rocks were sampled from two salt domes (Kłodawa and Mogilno) and profiles of seven wells. Deposits of the Na3t unit in the Kłodawa dome have a higher content of halite compared with the Na4t unit. Deposits of the latter con - tain more terrigenous material (detrital and clay matter). They are characterized by higher average contents of SiO2 , Al2 O3 , Fe2 O3 and K2O and are enriched with Mn, Rb, Zn and Zr, compared with the Na3t succession. Rocks of the Na3t unit in both the Kłodawa and Mogilno domes are characterized by higher average contents of CaO, MgO and Sr than the deposits of the Na4t unit mainly due to their higher contents of Ca and Mg carbonates (with dominant magnesite) and, subordinately, of calcite and dolomite. Bromine content in the Na3t profiles of both domes is higher than in the Na4t deposits and it is characteristic for primary chlorides precipitated from marine brine. Such bromine concentration was found only in some parts of the Na4t succession. The bromine content <40 ppm, observed in some rocks of the Na4t profile, suggests that they are mixtures of primary and secondary chlorides, produced by recycling (dissolution and precipitation) of formerly accumulated marine salts. The bromine content changes, observed in the above-described Na4t unit profiles, as well as in the zuber profiles of the PZ4 subcyclo - thems, show that depositional environment of the zuber deposits evolved from a marine basin (in the lower part of the Na4t profile and in deposits of the PZ4a and PZ4b subcyclothems) to continental saline lakes (in the upper part of the Na4t succession and in deposits of the PZ4c to PZ4e subcyclothems), which trapped a terrigenous material an d chlorides precipitated mainly from secondary (recycled) brine s. The contents of such components as SiO2, Al2O3 , MgO, K2O, Fe2O3 , Rb, Zn and Zr, highly influenced by the content of clay matter and detrital material, are significantly higher in the structureless and layered zuber types, compared with the textural equivalents of clayey and rock salts. The contents of Sr and CaO, connected with carbonate and sulphate admixture, are commonly higher in the layered rock salts with frequent clay-anhydrite laminae.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2019, 477; 69--122
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of tectonics on petrological characteristics of the anhydrite and anhydrite-halite intercalations in the Oldest Halite (Na1) (Zechstein, Upper Permian) of the Bądzów area (SW Poland)
Autorzy:
Toboła, T. T.
Powiązania:
https://bibliotekanauki.pl/articles/2060064.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Fore Sudetic Monocline
Zechstein
anhydrite
microtectonics
Oldest Halite (Na1)
Opis:
The Oldest Halite (Na1) (Zechstein, Upper Permian) played a significant role in the development of geological structure of the Fore-Sudetic Monocline (SW Poland) because of its different rheological properties in comparison to the adjacent rocks. Intercalations of anhydrite and anhydrite-halite occurring within the Na1 show a lot of features of tectonically disturbed rocks. Macroscopic petrological observations revealed that anhydrite rocks represent four rock types with different structural and textural properties. On the microscopic scale, five types of crystals have been distinguished in all macroscopic types. They vary in size, shape and distribution of primary fluid inclusion assemblages. The anhydrite-halite rocks show two groups with slightly different petrological features that are apparently related to their tectonic deformation and recrystallisation processes. The main recorded directions of tectonic movements seem to be horizontal or sub-horizontal.
Źródło:
Geological Quarterly; 2014, 58, 3; 531--542
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Materiał magnetyczny w próbkach soli z wysadów solnych Góra i Wapno
Magnetic material contained in the salt samples from the Góra and Wapno salt domes
Autorzy:
Jaworska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2192119.pdf
Data publikacji:
2015
Wydawca:
Polskie Stowarzyszenie Górnictwa Solnego
Tematy:
materiał magnetyczny
sfelule
sole cechsztyńskie
magnetic material
spherules
Zechstein salt
Opis:
W próbkach soli cechsztyńskich zebranych z trzech fragmentów dostępnych rdzeni, pochodzących z dwóch wysadów solnych Góra i Wapno, wśród materiału rezydualnego, wyseparowano materiał charakteryzujący się wysoką magnetycznością. Analizom poddano dwa zebrane typy tego materiału, tj. sferule (sferulki) – kuliste, metaliczne formy oraz nieregularne ziarna. Łącznie przebadano 13 ziaren. Wielkość ziaren obu typów mieściła się w granicach 70-400 μm. Głównym składnikiem chemicznym sferul i ziaren nieregularnych jest tlenek żelaza, którego udział w próbkach wynosi od 70 do 100%. Geneza tego materiału magnetycznego nie jest jednoznacznie określona; mogą one mieć pochodzenie kosmiczne lub antropogeniczne.
The Zechstein salt samples were collected from three fragments of cores, drilled from the Góra and Wapno salt domes. After the residual material had been separated, formations displaying high magnetism were found. Two types of such formations were subjected to analysis: round, metallic spherules and irregular particles. In total, 13 items were examined. The sizes of both types of the material ranged from 70 to 400 μm. Iron oxide was found to be the main chemical component of both spherules and irregular particles. Its proportion ranged from 70 to 100% in the samples. The origin of those magnetic materials has not been clearly determined. It can be either extraterrestrial or anthropogenic.
Źródło:
Przegląd Solny; 2015, 11; 78--82
2300-9349
Pojawia się w:
Przegląd Solny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The stratigraphy of Zechstein strata in the East European Craton of Poland : an overview
Autorzy:
Peryt, Tadeusz Marek
Skowroński, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/2055871.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Zechstein
stratigraphy
palaeogeography
East European Craton
Main Dolomite
Platy Dolomite
Polska
Opis:
The sedimentary and stratigraphic patterns established for Zechstein of the western part of the Peribaltic Syneclise (and in particular the eastern Łeba Elevation) were applied to other parts of the East European Craton (EEC) in Poland: the eastern Baltic Syneclise and the Podlasie region. A very large number of mostly fully-cored borehole sections in the Puck Bay region certainly predestines the eastern Łeba Elevation area to use it as a model. The most part of the EEC, except of its part adjacent to the Teisseyre-Tornquist Zone, during the Zechstein deposition represents the marginal parts of the basin. The fauna occurring in the Zechstein carbonate deposits of the EEC makes it possible to distinguish between the Zechstein Limestone and the younger carbonate strata, but certainly not between the Main Dolomite and the Platy Dolomite and hence the facies models for the Zechstein that have been previously developed in the western part of the Peribaltic Syneclise augmented by sequence stratigraphic approach seem to be the best tool to apply in other peripheral areas in the EEC area. The Zechstein sequence in the western part of the Peribaltic Syneclise consists, in general terms, of three parts: (1) carbonate platform of the Zechstein Limestone (occurring only in the north-westernmost corner of the study area and passing into basin facies dominant in the most part of the area); (2) the PZ1 evaporite platform system composed of sulphate platforms and adjacent basin system and constituting the major part of the Zechstein sequence; and (3) the Upper Anhydrite-PZ3 cover. There is a consensus, as far as the western part of the Peribaltic Syneclise is concerned, that the Platy Dolomite platform is wider than the Main Dolomite platform. In the easternmost part of the Peribaltic Syneclise, the stratigraphical interpretations are diverse. We have included the anhydrite overlying the Zechstein Limestone into the Upper Anhydrite, and concluded that the overlying interbedded mudstone and anhydrite also belong to the Upper Anhydrite. When above the Upper Anhydrite one carbonate unit occurs, it is assigned either to the Main Dolomite and Platy Dolomite, or to the Platy Dolomite. The same conclusion is proposed for the marginal parts of the Podlasie Bay. The deposition of Zechstein Limestone resulted in the origin of carbonate platforms along the basin margins which changed an inherited topographic setting. The Lower Anhydrite deposits are lowstand systems tracts (LST) deposits, lacking in more marginal parts of the western and eastern Peribaltic Syneclise and in the major part of the Podlasie Bay. The accommodation space existed and/or created during the Lower Anhydrite and the Oldest Halite deposition in the Baltic and Podlasie bays was filled and at the onset of the Upper Anhydrite deposition, a roughly planar surface existed except in the area adjacent to the main Polish basin. The Upper Anhydrite deposits are transgressive systems tracts deposits and then highstand systems tracts deposits and they encroached the Zechstein Limestone platforms. The Upper Anhydrite deposition was terminated by sea level fall, and the Upper Anhydrite deposits in the marginal areas became subject to karstification. The Main Dolomite transgression took place in several phases but its maximum limit did not reach the Upper Anhydrite limit. The deposition of the PZ2 chlorides (LST deposits) resulted in the filling of the accommodation space that was inherited after the deposition of the Main Dolomite and the Basal Anhydrite. Subsequently, the area became exposed, and marine deposits (Grey Pelite and Platy Dolomite) related to the last major transgression during the life of the Zechstein basin that resulted in a flooding of the exposed surface of older Zechstein deposits, including the area that was emergent during deposition of the PZ2 cycle. Microbial carbonates, being stromatolites and thrombolites, are a common feature of all Zechstein carbonate units but in particular this is the case of the Platy Dolomite. There are no direct premises allowing for convincing settlement doubts regarding the stratigraphical position of the upper carbonate unit in many cases, but several lines of evidence suggest that, as in the entire Zechstein basin, the Main Dolomite considerably shifted basinward, and the Platy Dolomite – landward, although it is difficult to ascertain whether the original Platy Dolomite extent was similar to or greater than the limit of the Zechstein Limestone as elsewhere in the Zechstein Basin.
Źródło:
Annales Societatis Geologorum Poloniae; 2021, 91, 4
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microfacies, foraminifers and carbon and oxygen isotopes in a basinal section of the Zechstein Limestone (Wuchiapingian): Bonikowo 2 borehole, western Poland
Autorzy:
Peryt, D.
Peryt, T. M.
Hałas, S.
Raczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/2060535.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Foraminifers
carbon and oxygen isotopes
Wuchiapingian
basin facies
Zechstein Limestone
Polska
Opis:
The Zechstein Limestone of the Bonikowo 2 borehole is composed of limestone with varied dolomite content and is slightly thicker (3.4 m) than other supposed condensed sections in SW Poland. The microfacies (mostly bioclastic wackestones-packstones) are characteristic of open marine limestone deposited in deep shelf environments. The common occurrence of echinoids in all parts of the section, except close to its top, indicates no essential change in sea water salinity. However, the palaeotemperature interpretation of the highest δ18O value of calcite recorded in the Bonikowo 2 borehole (+0.32‰) indicates a temperature of 22.9°C when a δ18O of water = 2‰ is assumed. The δ13C and δ18O curves for calcite and dolomite are similar in shape, and their mean values are similar: +1.8 ±1.5‰ for calcite, respectively, and +1.9 ±2.3‰ and –4.3 ±2.4‰, –3.8 ±4.3‰ for dolomite. There is a recrystallized interval in the lower part of the section with both δ13C and δ18O values reduced. This may be regarded as an aerobic equivalent of the Kupferschiefer. The diversity and abundance of foraminifers is significant throughout the section studied; lagenids prevail, and this is considered to be due to the dysaerobic conditions throughout the duration of deposition of the Zechstein Limestone.
Źródło:
Geological Quarterly; 2016, 60, 4; 827--839
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controls on basal Zechstein (Wuchiapingian) evaporite deposition in SW Poland
Autorzy:
Dyjaczyński, K.
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2060060.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Zechstein Basin
evaporites
3D seismics
lithofacies
sedimentation
anhydritization
SW Poland
Opis:
The development of basal Zechstein (Wuchiapingian) strata inSW Polandindicates the existence of a diversified relief inherited after the flooding of the pre-existing depression by the transgressing Zechstein sea. The deeper parts of the basin were the place of development of thin basinal Zechstein Limestone showing sedimentary condensation manifested by bored and encrusted grains and thick evaporites (mostly halite), and in shallow parts Zechstein Limestone reefs followed by thinner evaporite sequences (dominated by anhydrite) occur. The analysis of 3D seismic sections showed that instead of three conventionally recognized evaporite units of stratigraphic potential in the PZ1 cycle, five units occur (from the base to the top: Lower Anhydrite, Lower Oldest Halite, Middle Anhydrite, Upper Oldest Halite, Upper Anhydrite). In a particular place their number may vary from two (Lower Anhydrite at the base of the PZ1 cycle and Upper Anhydrite at the top of the PZ1 cycle) to five. There are two complexes of Lower Anhydrite occurring throughout the platform and basinal zones showing deepening-upward (transgressive) trend. The halite sedimentation in the deepest parts of salt basins began shortly after the deposition of the upper Lower Anhydrite complex while in the sulphate platform areas the sulphate deposition lasted still for a long time. The Lower Oldest Halite deposits occur in the depressions. Between the halite basins, anhydrite platforms occur, and the thickness of anhydrite platform deposits is smaller than it is observed in salt basins. The Upper Oldest Halite in turn is recorded above the anhydrite platform. The two halite units represent different phases of development of halite basins. The Lower Oldest Halite basins are related to the pre-Zechstein depressions, although in some cases their syndepositional subsidence was controlled by reactivation, during the deposition of basal Zechstein strata, of former faults. In turn, the Upper Oldest Halite basins used the accommodation space created due to anhydritization of the Lower Anhydrite deposits composed originally of selenitic gypsum. The 3D seismics evidences that the PZ1 evaporites inSW Polandhave been deposited in far more complex and dynamic system than it was assumed before.
Źródło:
Geological Quarterly; 2014, 58, 3; 485--502
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
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