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Tytuł:
Terrestrial-aquatic wood-inhabiting ascomycete Potamomyces from the Miocene of Poland
Autorzy:
Worobiec, G.
Worobiec, E.
Gedl, P.
Kasiński, J.R.
Peryt, D.
Widera, M.
Powiązania:
https://bibliotekanauki.pl/articles/31341378.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
fungi
paleoecology
paleoenvironment
non-pollen type
palynomorph
microscopic fossil
fungal ascospore
Potamomyces affinities
locality
Potamomyces invaginatus
Potamomyces batii
Potamomyces pontidiensis
Potamomyces armatisporus
Neogene
terrestrial-aquatic wood
Ascomycetes
Potamomyces
Miocene
Polska
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 3; 737-744
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sto lat Państwowego Instytutu Geologicznego : zarys historii materialnej
One hundred years of the Polish Geological Institute : an outline of the material history
Autorzy:
Wołkowicz, Stanisław
Peryt, Tadeusz M.
Powiązania:
https://bibliotekanauki.pl/articles/2074292.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Historia Państwowego Instytutu Geologicznego
siedziba warszawska
Oddziały regionalne PIG
History of the Polish Geological Institute
Warsaw headquarters
PGI regional branches
Opis:
Established a few months after regaining independence in 1918, the Polish Geological Institute was carrying out research aimed at ensuring the supply of necessary mineral raw resources to the domestic industry. The director of the Institute, Prof. J. Morozewicz as well as the state authorities were aware of the fact that for the proper functioning of the Institute suitable headquarter was needed. Therefore, already in the mid-1919, the appropriate area and financial resources were allocated for the construction of large buildings, the designer of which S W0łk0wicZ T M Pervt was Prof. M. Lalewicz. The laboratory pavilion was opened in 1926. The main building, which was put into use in 1936 and rebuilt after the destruction during World War II, has been the pride of the Institute until today. The extension of the state and a wide range of research issues meant that already in 1921, it was necessary to establish the Upper Silesian Station in Dąbrowa Górnicza, whose activity was focused on the coal geology. The Geological Station in Borysław, operating in the structure of the PGI since 1920, was transformed three years later into the Oil and Salt Department of the PGI, which closely co-operated with the Carpathian oil industry. The Holy Cross Mountain research group was located during 1937-1955 in the family home of Jan Czarnocki. After World War II, due to the significant intensification of geological research and exploration in Poland, new regional divisions of the Institute were established that currently have their headquarters in Kraków, Sosnowiec, Wrocław, Kielce, Gdańsk and Szczecin; all have the rank of branches. The organizational structure of the PGI is of an extremely regional nature, and the research issues of individual branches are mostly related to the recognition of the geological structure and mineral resources occurring in a given region. In addition, the Polish Geological Institute possesses 8 core repositories.
Źródło:
Przegląd Geologiczny; 2019, 67, 7; 507--518
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inkluzje fluidalne w halicie oraz bituminy w solach ewaporatów mioceńskich ukraińskiego Przedkarpacia jako wskaźnik występowania nagromadzeń węglowodorów w niżej leżących utworach
Fluid inclusions in halite and bitumens in rock salt from Miocene evaporites in the Ukrainian Fore-Carpathian region: as indicators of hydrocarbon accumulations in the underlying strata
Autorzy:
Więcław, D.
Lytvyniuk, S. F.
Kovalevych, V. M.
Peryt, T.M.
Powiązania:
https://bibliotekanauki.pl/articles/2074593.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
inkluzje fluidalne
bituminy
trwałe izotopy węgla
miocen
zapadlisko przedkarpackie
ewaporaty
fluid inclusions
bitumens
stable carbon isotopes
biomarkers
Miocene
Carpathian Foredeep
evaporites
Opis:
Fluid inclusions in halite from Miocene rock salt of the Ukrainian Carpathian Foredeep Basin in locations where evaporites overlie oil and gas reservoir rocks are characterized by their high methane content and the presence of oil droplets in some of them. They are thus similar to fluid inclusions reported from geochemical aureoles around oil and gas accumulations in the Zechstein (Upper Permian) of western Poland (Kovalevych et al., 2008). Geochemical analyses of bitumen in bulk samples of rock salt (including content and distribution of n-alkanes and isoprenoids, carbon isotope ratios) suggest a varied origin: hydrocarbon extracted from halite from boreholes located in proximity (proved or assumed) of oil and gas deposits (Lopushna-7, Grynivka-525) are probably related to organic material dispersed within the rock salt itself, and those from the barren areas (Verkhniy Strutyn-29) are most probably cogenetic with oil accumulated in the deposits of the Boryslav-Pokuttya Nappe.
Źródło:
Przegląd Geologiczny; 2008, 56, 9; 837-841
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationship of brine chemistry of the Pennsylvanian Paradox Evaporite Basin (southwestern USA) to secular variation in seawater chemistry
Autorzy:
Petrychenko, O. Y.
Williams-Stroud, S.
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2058982.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Pennsylvanian
Paradox Basin
evaporites
fluid inclusions
seawater chemistry
Opis:
To establish the brine chemistry associated with the evaporites in the Pennsylvanian Paradox Basin of southeastern Utah and southwestern Colorado (USA), the composition of primary fluid inclusions was determined for sedimentary halite from two drill cores, one near the central part of the basin (Shafer Dome No. 1) and one from a more marginal location of the basin (Gibson Dome No. 1). Chemical analysis of halite fluid inclusions was done on six samples from three different evaporite cycles of the Paradox Formation; cycle 10 in the Shafer Dome core and cycles 6 and 18 from the Gibson Dome core. The inclusions that range in size from 2 to 80 microns across, were analyzed using the Petrychenko method. Large inclusions (40 to 80 microns across) that were used for the chemical analyses contain one fluid phase with a carnallite or sylvite daughter crystal. Also reported in this study are fluid inclusion homogenization temperatures for sylvite or carnallite from primary halite crystals in the Gibson Dome core and in Shafer Dome. The relationship between K+ and Mg2+ in chloride rich inclusions corresponds to their proportion in MgSO4-depleted marine waters concentrated to the stage of carnallite deposition. A correlative relationship was observed between K+2+4-rich to MgSO4-poor compositions that have been proposed by other workers. A transition from MgSO4-rich to MgSO4-poor seawater composition may have occurred between Pennsylvanian and Permian times. This paper presents a possible alternate explanation to those already proposed in the literature, that the Paradox Formation mineralogy resulted from an intermediate seawater composition that records the global transition from MgSO4-rich to MgSO4-poor seawater.
Źródło:
Geological Quarterly; 2012, 56, 1; 25--40
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedymentacja ewaporatów badeńskich w zbiorniku przedkarpackim
Deposition of Middle Miocene Badenian evaporites in the Carpathian Foredeep Basin
Autorzy:
Peryt, T.M.
Powiązania:
https://bibliotekanauki.pl/articles/2074460.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
miocen
sedymentacja
ewaporyty
evaporites
Miocene
facies
sedimentation
correlation
Carpathian Foredeep
Opis:
Badenian evaporites of the Carpathian Foredeep Basin represent the lower part of the NN6 zone and are underlain and overlain by deep-water deposits. Halite and associated deposits in the central part of the Badenian evaporite basin show the same facies successions and marker beds can be traced across and between individual basins. Characteristic marker beds made it possible to correlate various facies zones of the marginal Ca-sulfate platform. These marker beds seem to reflect events that may be related to sudden and widespread changes in water chemistry, which in turn imply major changes in basin hydrology. The onset of the evaporitic deposition in the Carpathian Foredeep was clearly diachronous and the evaporites deposited in the basin centre preceded the beginning of evaporite sedimentation in the marginal basin, however, depositional history in the marginal basin and the basin center was the same. Sedimentological and geochemical data indicate recycling of evaporites throughout most of the evaporite deposition.
Źródło:
Przegląd Geologiczny; 2006, 54, 5; 438-444
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Państwowy Instytut Geologiczny jako państwowa służba geologiczna : sto lat w służbie Niepodległej
Polish Geological Institute as the national geological survey : hundred years at the service for Poland
Autorzy:
Peryt, Tadeusz M.
Powiązania:
https://bibliotekanauki.pl/articles/2074288.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Polski Przegląd Geologiczny
prawo geologiczne i górnicze
Państwowy Instytut Geologiczny
historia geologii
Polish Geological Survey
geological and mining law
Polish Geological Institute
history of geology
Opis:
The Polish Geological Institute was established in 1919 as the national geological survey within the Ministry of Industry and Trade. The initiative of a group of parliament members to appoint the Polish Geological Institute was supported by the Polish Parliament on May 30, 1919, and the official opening of the Institute took place on May 7, 1919. Two years later the PGI status and budget were accepted by the Polish government and Józef Morozewicz has received director’s nomination from the Head of State Józef Piłsudski. In March 1938, the President of Poland accepted a new decree concerning geological survey of Poland which was composed of the Polish Geological Institute and the State Geological Council. The role of the PGI grew and the budget substantially increased, but this positive trend was stopped due to the beginning of World War II. During the first post-war years, regional and basic studies made it possible to establish a geological model of Poland leading to great discoveries of mineral deposits in the fifties. The decree of October 8, 1951 adjusted the organization forms of the geological survey to the system of central planning and the domination of state property, and the institute (with the name changed to the Geological Institute) became a scientific institution. During the first years the institute experienced good conditions of development, and a great progress in the knowledge of geology of Poland combined with the basic and regional studies that led to significant discoveries and documentation of mineral deposits. However, already in the seventies the first signs of crisis in geology became evident. In 1985, the Ministry of Environmental Protection and Mineral Resources was established, the Central Board of Geology was disbanded, and many tasks of geological survey returned to the institute, hence this turned out to be appropriate to return to the historical name, Polish Geological Institute, which took place on June 19, 1987. Since January 1, 2012, the Polish Geological Institute has served as the Polish geological survey on the basis of the Act of June 9, 2011, and earlier, since January 1, 2002, legally specified tasks of the Polish geological survey has been assigned to the PGI. On February 24, 2009 the Council of Ministers gave the PGI a status of National Research Institute, and this implied the adding this new status to the name of the Polish Geological Institute. For the century the Polish Geological Institute has successfully fulfilled all the basic responsibilities and commitments that are conventionally assigned to national geological surveys, and is a model example of modern national geological survey of very wide expertise.
Źródło:
Przegląd Geologiczny; 2019, 67, 7; 519--534
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Audiatur et altera pars: w kwestii realizacji zadań służby geologicznej : polemika
Audiatur et altera pars: on the issue of the execution of geological survey tasks : polemics
Autorzy:
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2075803.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Państwowy Instytut Geologiczny
Państwowy Instytut Badawczy
Polish Geological Institute
National Research Institute
Bundesanstalt für Geowissenschaften und Rohstoffe
Opis:
The paper presents the critical opinion expressed by Osiejewicz (2018b) who supports the view of Legislative Council of26 January 2018 on the draft act on the Polish Geological Agency that the German federal geological survey (Bundesanstalt fur Geowissenschaften und Rohstoffe - BGR) can be considered as an appropriate formula for the Polish Geological Institute - National Research Institute (PGI - NRI). This opinion is groundless and ignores the fact that because of the federal nature of FRG, many tasks of the national geological survey can, and are, accomplished by the state geological surveys only, and cannot be realized by BGR. PGI-NRI in turn accomplishes tasks of both BGR and the state geological surveys and in addition, possesses bigger potential to undertake new tasks.
Źródło:
Przegląd Geologiczny; 2018, 66, 10; 624--628
0033-2151
Pojawia się w:
Przegląd Geologiczny
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:
Ewaporaty cechsztynu PZ1- PZ3 bloku Gorzowa
Zechstein 1- 3 evaporites of the Gorzów Block (NW Poland)
Autorzy:
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2074802.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
cechsztyn
ewaporaty
stratygrafia sekwencji
Polska Zachodnia
Zechstein
evaporites
sequence stratigraphy
West Poland
Opis:
The Gorzów Block (West Poland) occurs in the transition zone between the PZ1 sulphate platform and the Na2 basin. In contrast to the western part of the Southern Permian Basin where the Z1 halite (Oldest Halite Na1) is normally restricted to the peripheral subbasins located south of the main basin, in Poland it occurs both in the basin centre and in the former basins of the Lower Anhydrite within the marginal sulphate platform complex, where halite sequences are thick and may have originated in a deep-water setting. The Na1 deposits have been considered so far to be LST deposits both in the marginal sulphate platform facies as well as in the basin centre. Brine salinities (and the minerals they precipitate) are controlled by brine residence times in the basin, and these are determined primarily by the absolute and the relative rates of water flow into, and brine flux out of the basin (Kendall, 2010). Thus sea-level rise in the Boreal Sea could have resulted in the increase of the brine residence times in the Zechstein basin and the deposition of more saline evaporites. Consequently, the Oldest Halite in the basin centre in Poland is regarded as the TST deposit.
Źródło:
Przegląd Geologiczny; 2010, 58, 8; 689-694
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nauka a państwowa służba geologiczna
Science and the national geological survey
Autorzy:
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2075851.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
deklaracja hanoverska
badania geologiczne w UE
Państwowy Instytut Geologiczny
PIB
Hanover declaration
geological surveys in EU
Polish Geological Institute
Opis:
The Hanover declaration (1993) of the mission of a geological survey clearly states that it does not deal with management, but as a government organization it should serve the state authorities and societies by scientific advice and information on natural resources and the environment, and such a mission can be accomplished only by science, methodological competence and research independence. More than a half of the geological surveys in EU countries define themselves as research institutions (Fig. 1), and the scientific production expressed in the ratio ofpublications in JCR journals per staff number in some geological surveys (e.g. ČGS, BGS) is bigger than in the Polish Geological Institute-NRI (Fig. 2) what in part is related to the role played by sendee tasks of the PGI-NRI. The close connections of geological surveys with the scientific research are ignored by adherents of establishment of the Polish Geological Agency.
Źródło:
Przegląd Geologiczny; 2018, 66, 8; 475--476
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedimentary history and biota of the Zechstein Limestone (Permian, Wuchiapingian) of the Jabłonna Reef in Western Poland
Autorzy:
Peryt, T. M.
Raczyński, P.
Peryt, D.
Chłódek, K.
Mikołajewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/191254.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Wuchiapingian
reefs
Zechstein
bryozoans
stromatolites
aragonite cementation
neptunian dykes
carbon and oxygen isotopes
Opis:
The Jabłonna Reef, one of the reefs formed in Wuchiapingian time in the western part of the Wolsztyn palaeo-High (SW Poland), is characterized by quite irregular outlines and consists of three separate reef bodies (ca. 0.5–1.5 km2 each; the thickness of the reef complex is usually >60 m). It is penetrated by four boreholes, which show two distinct phases of bryozoan reef development during deposition of the the Zechstein Limestone. The first one occurred early in the depositional history and botryoidal aragonitic cementation played a very important role in reef formation. This phase of bryozoan reef development terminated suddenly; one possible reason was that a relative change of sea level – first a fall and then a rise – disturbed the upwelling circulation. Consequently, bioclastic deposition predominated for a relatively long time until the second phase of bryozoan reef development occurred, but the latter was not accompanied by dubious early cementation. During this second phase, reticular fenestellid bryozoans were predominant. Subsequently, microbial reefs developed and abound in the upper part of the Zechstein Limestone sections. The general shallowing-upward nature of deposition in the Jab³onna Reef area resulted in reef-flat conditions with ubiquitous, microbial deposits, in the central part of the Jab³onna Reef. Then, the reef-flat started to prograde and eventually the entire Jab³onna Reef area became the site of very shallow, subaqueous deposition. Five biofacies are distinguished in the Jab³onna Reef sections: the Acanthocladia biofacies at the base, then mollusc-crinoid, brachiopod-bryozoan, Rectifenestella and at the top, stromatolite biofacies. They represent a shallowing-upward cycle, possibly with some important fluctuation recorded as the distinctive lithofacies boundary, corresponding to the Acanthocladia/mollusc-crinoid biofacies boundary. The 13C curves of the Jab³onna 2 and Jab³onna 4 boreholes permit correlation of the trends in the middle parts of both sections and confirm the strong diachroneity of the biofacies boundaries, with the exception of the roughly isochronous Acanthocladia/ mollusc-crinoid biofacies boundary. The presence of echinoderms and strophomenid brachiopods indicates that until deposition of the lower part of the Rectifenestella biofacies, conditions were clearly stenohaline. The subsequent elimination of stenohaline organisms and progressively poorer taxonomic differentiation of the faunal assemblage are characteristic for a slight, gradual rise in salinity. The taxonomic composition of organisms forming the Jab³onna Reef shows a similarity to reefs described from England and Germany, as well as the marginal carbonate platform of SW Poland. Filled fissures were recorded in the lower part of the Jabłonna Reef. The aragonite cementation recorded in some fissure fillings implies that they originated in rocks exposed on the sea floor and are neptunian dykes.
Źródło:
Annales Societatis Geologorum Poloniae; 2016, 86, 4; 379-413
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strontium isotope composition of Badenian (Middle Miocene) Ca-sulphate deposits in West Ukraine: a preliminary study m
Autorzy:
Peryt, T. M.
Hryniv, S.
Anczkiewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/2059023.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Middle Miocene
evaporites
strontium isotopes
gypsum
Paratethys
Opis:
Strontium isotope compositions have been measured in six primary gypsum samples from the most marginal part of the Badenian evaporite succession in the Ukrainian Carpathian Foredeep Basin (Mamalyha quarry section) and in two anhydrite samples from the basin-centre halite zone of the Ukrainian Carpathian Foredeep, aimed determining the origin of brines from which these sulphates were precipitated. The strontium isotope ratios (87868868761887 6878786
Źródło:
Geological Quarterly; 2010, 54, 4; 465-476
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:
The sulphur and oxygen isotopic composition of Lower Cambrian anhydrites in East Siberia
Autorzy:
Peryt, T. M.
Hałas, S.
Kovalevych, V. M.
Petrychenko, O. Y.
Dzhinoridze, N. M.
Powiązania:
https://bibliotekanauki.pl/articles/2058955.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Siberia
Lower Cambrian
evaporites
sulphur isotopes
oxygen isotopes
Opis:
Published sulphur and oxygen isotope age curves for the late Neoproterozoic-Early Cambrian time interval have been based on studies of sulphate intervals of the East Siberian salt giant. We report here on sulphur and oxygen measurements for sulphate dispersed in, or forming laminae in, the rock salt deposits in all Lower Cambrian basins of East Siberia. Sulphur isotope data for 26 samples of Lower Cambrian anhydrites from East Siberia range from +22.6 to +34.5‰. No difference was observed between different suites and between samples taken from anhydrite intercalations in rock salt and from water-insoluble residue in rock salt. Oxygen isotope data for 25 anhydrite samples range from +12.4 to +17.8‰, and thus δ18 O values have a smaller range of variation (5.5‰) than δ34 S (11.8‰) over the entire set of Lower Cambrian anhydrites. The great δ34 S variability observed in the Lower Cambrian of Siberia seems to reflect mixing of sulphates coming from the ocean and due to the riverine input. The lowest δ18 O values may indicate the input values from both the sources, whilst the highest value may result from isotope exchange between SO4 2- and water. Our results combined with data provided by previous workers could indicate a clear stratigraphic trend in δ34 S values, with a remarkable fall of ca. 9‰ in δ34 S value during the earliest Cambrian and then a slight rise in δ34 S values in the younger part of Early Cambrian. However, if only the highest values are taken, the measured values are compatible with seawater δ34 S 3 30‰ during the entire Early Cambrian. Sulphur isotopic composition of sulphate minerals did not be come heavier from the sulphate stage to ward the chloride stage.
Źródło:
Geological Quarterly; 2005, 49, 2; 235--242
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwagi o zasadach funkcjonowania państwowych służb geologicznych w krajach Unii Europejskiej
Remarks about principles of operation of national geological services in countries of the European Union
Autorzy:
Peryt, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/2075853.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
badania geologiczne
Unia Europejska
Państwowy Instytut Geologiczny
Państwowy Instytut Badawczy
geological surveys in EU
Polish Geological Institute
NRI
Opis:
Most western geological surveys, and in particular European Union countries and the USA, focus on public-good science for government, and research to understand earth and environmental processes, in order to supply neutral and independent advice and information about all geoscientific and natural resources issues to the government and society. In contrast, the current draft law on the Polish Geological Agency aims at introducing coherent hydrogeology and geology management as well as implementation of state policy in the field of resources security. Thus, the conclusion that the Polish Geological Agency is an analog of geological surveys, existing in many other developed countries, is absolutely unjustified.
Źródło:
Przegląd Geologiczny; 2018, 66, 9; 547--550
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 34

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