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Wyświetlanie 1-15 z 32
Tytuł:
Georadar investigations and geochemical analysis in contemporary archeological studies
Autorzy:
Łyskowski, M.
Wardas-Lasoń, M.
Powiązania:
https://bibliotekanauki.pl/articles/184685.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
sewage
Old Town of Cracow
moat
GPR
echograms
AAS
heavy metals
Opis:
Archeological studies require a precise and interdisciplinary approach. Use of the noninvasive methods in urban area investigations is expected because they do not result in any changes in land architecture plans. Very good combination fulfilling such demands are geochemical analyses of: pH, Eh, conductivity and heavy metals concentrations in soils and the results of the ground penetrating radar method. These methods allow for a more precise selection of places of interest and can be also used for a more accurate calibration and better interpretation of subsequent results. Proposed methodology gives good final results thanks to complementarity of each method and can be used under variable conditions.
Źródło:
Geology, Geophysics and Environment; 2012, 38, 3; 307-315
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical analysis and preparation the well abandonment projects on the Polana Ostre field
Autorzy:
Piotrowska, N.
Tępka, P.
Talar, D.
Powiązania:
https://bibliotekanauki.pl/articles/298781.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Polana Ostre
hydrocarbons
surface geochemical survey
gas and oil leakage
liquidations
Opis:
This article covers the methodology of geochemical analysis, interpretation of results and solution that was proposed to abandon a depleted oil reservoir Polana Ostre, Poland. Polana Ostre as a reservoir was discovered in the 19th century and in 1870 the main facilities were built. Several dozens of wells were drilled and their depth varies between 60–497 m. Furthermore, on the field many hand‑drilled wells are located. Oil was produced through the 60 years with breaks. After the 2nd World War the facility was suddenly discarded due to political and economic reasons. As a result of inadequate operation, oil leakages can be observed. It causes an environmental pollution and a serious hazard. The remains were recognized and documented. A series of geochemical measurements were taken to indicate gas concentrations throughout the field. An analysis of the results showed significant concentrations of hydrocarbons in the soil. In order to mitigate the threat, a proper plug and abandonment operation of the deepest well was designed. Project executors hope to attract the attention of industry and academia to the problems depleted reservoirs that were not correctly abandoned.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 4; 449-458
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region
Autorzy:
Maruta, M.
Zakrzewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/299185.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
tertiary lignite
geochemical analysis
palaeoenvironment
methane
Opis:
Coal beds could contain various amount of methane. This attribute might be dangerous in shafts or quarrying. Among other things, the works in the coal beds, including drilling, potentially there is a risk of exceeding the methane lower explosive limit. But on the other hand it is a source of unconventional hydrocarbon accumulations. In this paper geochemical characteristic of organic matter of tertiary brown coal from central part of Poland were performed. Geochemical surveys helps to know about genesis of methane from study area. The analysed samples contain various quantity of organic carbon, from 20,74 to 71.93 wt. %. Lignite from examine samples have weak hydrocarbon potential. In tertiary sediments prevails III type of kerogen with admixture of II type of kerogen. The thermal maturity of the tertiary organic matter changes within the interval from 354 to 419 in Tmax scale. Organic matter is immature. The composition of bitumens is different in various part of study area. Elemental analysis confirm that brown coal was comprised mostly by humic-group macerals. Coal samples contain methane with mixed genesis.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 1; 81-93
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaeoenvironmental and palaeoclimatic records in the Niedzica Succession sediments (Pieniny Klippen Belt) in the light of geochemical and chemostratigraphical analysis
Autorzy:
Kasperek, Kamila
Powiązania:
https://bibliotekanauki.pl/articles/24202125.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Pieniny Klippen Belt
geochemical analysis
chemostratigraphical analysis
Opis:
The Middle–Upper Jurassic sediments of the Niedzica-Podmajerz section was the subject of integrated study, including sedimentological, geochemical and stratigraphic analysis. The studied section is located in the Pieniny Klippen Belt area and belongs to the Niedzica unit. The section is characterized by continuous exposure of Jurassic carbonate-silica deposits extending from the Bajocian to Kimmeridgian, showing a transition from crinoidal limestones representing typical neritic facies to pelagic facies, i.e. radiolarites and red nodular limestones. The following lithofacies were distinguished in the studied section: grey crinoidal limestones (Smolegowa Limestone Formation), red crinoidal limestones (Krupianka Limestone Formation), red nodular limestones (Niedzica Limestone Formation), radiolarites (Czajakowa Radiolarites Formation) and red nodular limestones (Czorsztyn Limestone Formation). Based on a multidisciplinary dataset, the palaeoenvironmental interpretation was proposed. The results of magnetic susceptibility (MS), gamma-ray spectrometric measurements, CaCO3 content, δ13C analysis and concentrations of major and trace elements data indicate a rapid change in sedimentary conditions at the Callovian–Oxfordian boundary. Variations of δ13C from the Niedzica-Podmajerz indicate global changes in biological productivity, ocean circulation and burial of organic matter in the Tethys area, analogies of which can be found, for example, in Fatricum Domain in the Tatra Mountains. Records of MS, elements K, Th, Al, as well as Ti/Al and Zr/Al proxies indicate probably a period of increased (Lower Bathonian–Upper Callovian) and decreased (Oxfordian) detrital supply to the sedimentary basin. This process was most likely climatically controlled. The CaCO3 results indicate the variability of carbonate production. The lowest values of calcium carbonate (<20%) in Niedzica-Podmajerz section was recorded in the middle part of the radiolarites of the Czajakowa Radiolarite Formation, corresponding to the phase of the carbonate crisis. From this interval, the amount of carbonates in the rocks gradually increases, indicating a return to carbonate sedimentation. These fluctuations probably reflect changes in the position of the ACD and CCD.
Źródło:
Geotourism / Geoturystyka; 2023, 1-2 (72-73); 34--34
1731-0830
Pojawia się w:
Geotourism / Geoturystyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical analysis for palaeoenvironmental interpretations : a case study of the English Wealden (Lower Cretaceous, south-east England)
Autorzy:
Akinlotan, O.
Powiązania:
https://bibliotekanauki.pl/articles/2060616.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
elemental composition
X-ray fluorescence
spectral gamma-ray
palaeoenvironments
Lower Cretaceous
south-east England
Opis:
The elemental composition of terrigenous sediments is extremely important for interpreting the depositional conditions of sedimentary basins especially when traditional data are not available or insufficient. For the first time in the published literature, the elemental composition of the Lower Cretaceous Weald Basin (south-east England) is presented via X-ray fluorescence (XRF) and Spectral Gamma-ray (SGR) methods. The concentrations of Zr, Cr, Ni, Rb, and Sr in varying quantities suggest that the sediments may have been sourced from a stable craton while the enriched redox-sensitive elements such as Mo and Co confirm the presence of anoxic and reducing conditions at the sites of deposition. The spectral gamma-ray data show that the sandstone facies are more radioactive than the adjacent mudstone and shale and this trend is consistent with a freshwater origin. The higher quantity of thorium in relation to uranium indicates humid and hot palaeoclimatic conditions at the source areas that favoured intense weathering. The results of these analyses reinforce the importance of the geochemistry of sedimentary rocks as useful tools for understanding the depositional conditions of sedimentary basins.
Źródło:
Geological Quarterly; 2017, 61, 1; 227--238
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of groundwater potability for the population: Geochemical evaluation of aquifers in the city of Krasnodar
Autorzy:
Azimov, Abdugani
Nekrasova, Larisa
Gura, Dmitry
Powiązania:
https://bibliotekanauki.pl/articles/2073727.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aquifers
drinking water
geochemical analysis
heavy metals content
Krasnodar
morbidity stage
wells
Opis:
This work aimed to evaluate groundwater potability for the population through geochemical assessment methods on the example of aquifers in Krasnodar city. In 2016 and 2019, on the territory of Krasnodar city (Krasnodar region, Russian Federation), a detailed geochemical analysis of groundwater quality was performed based on a total of 6000 samples, 3000 samples per each year. Samples were taken from 30 wells located at depths of up to 450 m in the layers of Anthropogen and Neogene stages. Quantitative analysis of wells according to the average water quality parameters showed that in 15 wells, the water condition met the MAC (maximum allowable concentration) standards in all layers. Water abundance between the layers of the Quaternary and Cimmerian stages is seven times as different (p ≤ 0.001) towards the latter, the hardness between the same horizons is ten times as different (p ≤ 0.001) towards the Quaternary stage and three times as different (p ≤ 0.05) in terms of solid residue. Thus, the water hardness and water abundance index vary significantly between the vertical layers. A strong positive correlation between the solid residue and the hardness values (Pearson correlation 0.93, p ≤ 0.05), and a negative correlation between water abundance and solid residue values (Pearson correlation - 0.83, p ≤ 0.05), as well as between the hardness and water abundance values (Pearson correlation - 0.81, p ≤ 0.05) was recorded. These findings can be used for regions with similar deposits of rocks and aquifers.
Źródło:
Journal of Water and Land Development; 2022, 52; 34--43
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of postglacial palaeoenvironmental changes on the properties of sediments in the kettle hole at Jurki (NE Poland)
Autorzy:
Karasiewicz, T. M.
Hulisz, P.
Noryśkiewicz, A. M.
Stachowicz-Rybka, R.
Michalski, A.
Dąbrowski, M.
Gamrat, W. W.
Powiązania:
https://bibliotekanauki.pl/articles/2060388.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
young glacial landscape
kettle hole
end moraines
geochemical analysis
biogenic deposits
Opis:
This research is focused on a small kettle hole located within the Morąg moraines (Iława Lake District, NE Poland). The study objective was to determine the impact of palaeoenvironmental changes in sedimentation and properties of sediments filling the bottom of the kettle hole. Sedimentological, geochemical, and palaeobotanical studies enabled us to distinguish several development phases of the kettle hole, and cluster analysis performed on physicochemical data yielded seven local geochemical zones (JuI/I to JuI/VII). The beginning of biogenic sedimentation in the conditions of a small water body, functioning in the Late Glacial period (4.20–4.10 m), was determined on the basis of palaeobotanical research. Sediments deposited in the lake during its further evolution were rich in microelements such as Ca, Na, Mg, and K, and to a smaller extent – Fe and Mn (JuI/I–III local geochemical zones). The Late Glacial lacustrine period ended with the accumulation of very silty, pollen-free gyttja, with a stratigraphic hiatus (JuI/IV, 3.40–3.20 m). The sediments were enriched with SiO2ter, which indicates an increased rate of slope erosion, and concretions of Fe-Mn occurring below this layer (JuIII) provide evidence for lowering of the water level and even desiccation. In the Holocene, the lacustrine period ended with the accumulation of coarse detrital gyttja (3.20–2.60 m). Palaeobotanical data indicate that the next group of sediments were deposited in the Late Subboreal and Subatlantic periods (2.60–0.0 cm, JuI/V–VII; sedge peat). Their properties were varied and related to hydrologic conditions, limited denudation, and vegetation succession. There was also a significant change in the trophic conditions of the water and consequently in the sediments of the kettle hole, which changed during the lacustrine period from basic to acid, and strongly acid in the surface layer. This reaction may be related to a change in the water regime as well as to human impact in the environment, which led to the colonization of the peat bog by Sphagnum moss.
Źródło:
Geological Quarterly; 2017, 61, 2; 319--333
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected geochemical criteria in mire profiles of Poreby Wojslawskie (Sandomierz Basin, Poland SE)
Wybrane prawidłowości geochemiczne w profilach torfowiska Poręby Wojsławskie (Kotlina Sandomierska, Polska SE)
Autorzy:
Plak, A.
Chodorowski, J.
Pidek, I.A.
Dobrowolski, J.
Powiązania:
https://bibliotekanauki.pl/articles/905616.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
geochemical analysis
biogenic sediment
mire profile
chemical composition
mire habitat
Sandomierz Basin
Polska
Opis:
The geochemical analysis of biogenic sediments was used to reconstruct environmental conditions and the impact of human activity from a small mire geo-system in the Sandomierz Basin (Poland SE). Changes in the nature of selected geochemical indicators show a significant impact on the transformation of the mire during the early stages of human activity. It is reflected in the geochemical record by means of a high proportion of heavy metals – cadmium, lead and copper. Evident variability of main geochemical components concentration is also visible in a vertical record of analysed cores. This is a consequence of the sedimentary basin asymmetric configuration and the ensuing variable biogenic sedimentary succession.
Analizy geochemiczne stanową jedną z podstawowych metod badań osadów biogenicznych deponowanych w torfowiskach. W pracy wykorzystano analizę geochemiczną osadów biogenicznych z małego geosystemu torfowiskowego in the Sandomierz Basin (Poland SE) do odtworzenia warunków środowiskowych i wpływu działalności człowieka. Zmiany charakteru wybranych wskaźników geochemicznych zaznaczają znaczący wpływ na transformację torfowiska w najmłodszych fazach działalności człowieka. Rejestrowana jest ona w zapisie geochemicznym poprzez wysoki udział metali ciężkich – kadm, ołów i miedź. Zaznacza się także wyraźna zmienność koncentracji głównych składników geochemicznych w zapisie pionowym analizowanych rdzeni. Jest to konsekwencją asymetrycznej konfiguracji zbiornika sedymentacyjnego i wynikającej z niej zmiennej w czasie biogenicznej sukcesji osadowej.
Źródło:
Polish Journal of Soil Science; 2015, 48, 1
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Główne etapy zasiedlenia i rozbudowy grodziska w Bonikowie (Wielkopolska) w świetle badań litologicznych i geochemicznych
Autorzy:
Hildebrandt-Radke, I.
Powiązania:
https://bibliotekanauki.pl/articles/295256.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
Early Medieval stronghold
middle Obra Ice-Marginal Streamway (Obra Marshy Meadows)
lithological geochemical analysis
Opis:
The early medieval fortified settlement in Bonikowo was located within the wetland, in very marshy backwaters of the middle Obra river (the Obra Marshy Meadows). The Bonikowo stronghold belonged to a system of numerous small castles of southern Great Poland which had been formed in the period before the rise of the centralized state. This was a concave fortified settlement, consisting of many parts, with three ramparts, originating in different phases of the Middle Ages, as was confirmed by dating of archaeological pottery findings and by absolute dating. The castle was built with material from the sandy sediment of the Obra river backwaters. Geochemical analysis shows the length and intensity of the settlement and economic use of internal zones of the ramparts, especially of the internal zones within the rampart II, considered the oldest.
Źródło:
Landform Analysis; 2011, 16; 77-80
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Element enrichment and provenance of the detrital component in Holocene sediments from the Western Black Sea
Autorzy:
Dekov, V.M.
Darakchieva, V.Y.
Billstrom, K.
Garbe-Schonberg, C.D.
Kamenov, G.D.
Gallinari, M.
Dimitrov, L.
Ragueneau, O.
Kooijman, E.
Powiązania:
https://bibliotekanauki.pl/articles/2079273.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
trace element concentration
isotope analysis
enrichment factor
Holocene sediment
catchment area
geochemical analysis
Black Sea
Opis:
Concentrations of a large set of major and trace elements, and Sr, Nd and Pb isotope ratios were measured in Holocene sediments cored in the western deep Black Sea in order to unravel: (1) the controls of element enrichment, and (2) sources of the detrital component. The transition of the basin from oxic to euxinic resulted in enrichment or depletion in a number of elements in the deep-sea sediments. Authigenic Fe enrichment appears to depend on the amount of Fe mobilized from the sediment through the benthic redox shuttle mechanism and free H2S in the water column (degree of “euxinization”). Manganese enrichment is controlled by diagenetic reactions within the sediment: the dissolution of Mn minerals, Mn2+ diffusion upward and reprecipitation. Barium enrichment is also controlled by diagenetic reactions, sulfate reduction and methanogenesis, that take place above and below the sulfate-methane transition, respectively. The major part of V, Co, Ni, Cu, Zn, Cr, Mo, Cd and Sb is inferred to have co-precipitated with Fe in the euxinic deep waters and to have been incorporated into authigenic Fe-sulfides. Basin reservoir effect additionally influences the Mo enrichment. The U enrichment is interpreted to have a different origin in the two organic-rich stratigraphic units (II and I). It is inferred to be: (i) at the expense of the U inventory of the deepwater pool and a result of inorganic reduction of U at euxinic conditions in the lower Unit II; and (ii) at the expense of the U inventory of the surface water pool and a result of biogenic uptake and transfer to the sediment by the plankton in the upper Unit I. The high field strength elements are closely linked to the detrital component and their depletion in the organic-rich sediments reflects a dilution of the detrital component by the biogenic one. The enrichments of REE, Sn and Th are likely controlled by adsorption on clay minerals. Sr-Nd-Pb isotope compositions of the alumino-silicate component of the studied sediments are relatively uniform. They are most likely controlled by riverine suspended matter supplied mainly in the NW Black Sea (Danube Delta) and transported southward by marine currents, and to a lesser degree by suspended matter from the small rivers draining SE Bulgaria and NW Turkey. Wind-blown dust from the Sahara Desert appears to have a minor contribution to the alumino-silicate component of the sediments. The slight shift in the Pb isotopes in Unit I upper layers is possibly caused by the addition of anthropogenic Pb.
Źródło:
Oceanologia; 2020, 62, 2; 139-163
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
REE-bearing minerals in sediment-hosted stratiform pyrite mineralization zones of the Wiśniówka area (Holy Cross Mts., Poland)
Autorzy:
Migaszewski, Zdzisław M.
Gałuszka, Agnieszka
Zielińśki, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/31342963.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
siliciclastic rocks
REE-bearing minerals
geochemical analysis
SEM-EDS
EMPA
REE-mineral provenance
Wiśniówka area
Polska
Opis:
There are two arsenical pyrite (As-FeS2mineralization zones cropping out in the Podwiśniówka and Wiśniówka Duża quarries where quartzites and quartzitic sandstones have been extracted for over a century. A large amount of pyrite in the Wiśniówka siliciclastics is unusual in the hard rock mining throughout the world. The pyritiferous beds contain a variety of REE-bearing minerals, including a crandallite series of aluminum-phosphate-sulfate (APS) minerals, e.g., predominant goyazite SrHAl3[(PO4)2(OH)6] with subordinate gorceixite BaHAl3[(PO4)2(OH)6] and very occasional crandallite CaHAl3[(PO4)2(OH)6]. By contrast, the other REE-phosphate minerals, e.g., xenotime YPO4, bur particularly monazite CePO4 occur in a lesser amount. Goyazite prevails somewhat in the Podwiśniówka beds whereas xenotime in the Wiśniówka Duża beds. Of the other REE-bearing minerals, bastnäsite REECO3(F,OH), florencite (REE)Al3(PO4)2(OH)6 and synchysite CaCe[CO3]2F occur in trace amounts. Interestingly, the quite common phosphate minerals, i.e., wavellite (Al.3[(OH,F)3|(PO4)2]×5H2O and variscite Al[PO4]×2H2O) are depleted in REEs with only Ce attaining 0.09 wt.% as documented by an electron-probe microanalysis. In contrast to quartzites/quartzitic sandstones, carbonaceous clayey-silty shales and bentonites/tuffites are distinctly enriched in REE-bearing minerals. This diversity is also mirrored in the mean total REE concentrations varying from 204 to 314 mg/kg, in clayey-silty shales and bentonites, attaining 457 mg/kg in some Podwiśniówka shale beds. Results of this and the previous petrographic, mineralogical and geochemical studies have indicated that REE-bearing minerals formed generally along with As-rich pyrite, nacrite/dickite and probably TiO2 polymorphs as a result of multiphase hydrothermal vent activity that took place in the Wiśniówka Late Cambrian sedimentary basin. This evidence is also backed up by the values of LREENASC/HREENASC (1.44–1.75) and Eu/EuNASC (1.24–1.30) coefficients in the clayey-silty shales. This positive Eu anomaly (31.20) points to the formation of REE-bearing minerals in a reducing environment.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 17
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differences in the development of the Szczecin Lagoon area in the Late Glacial and Holocene based on the geochemical analysis of carbonate sediments from Lake Nowowarpieńskie (NW Poland)
Autorzy:
Strzelecka, Agnieszka
Wróbel, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2037033.pdf
Data publikacji:
2021-12-23
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
lacustrine chalk
geochemistry
energy dispersive spectroscopy
Littorina transgression
Opis:
This paper presents the results of geochemical analysis performed for the more-than-10-m-long core of sediments derived from Lake Nowowarpieńskie. Contrary to what its geographical name would suggest, it is in fact a peripheral bay  of the Szczecin Lagoon (NW Poland). A characteristic feature of the sedimentary cover of this water body is the several-metre-thick layer of lacustrine chalk, which is unique in the lithology of the sediments of today's Szczecin Lagoon. This sediment has been analysed using atomic absorption spectrometry (AAS), energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) imaging. The chalk sediment from Lake Nowowarpieńskie is of chemical origin, bearing no fragments of vascular plants, but only traces of C-org in the form of small plant remains. The analysis of individual crystals using the EDS method also show Ca contents of over 99%. SEM images reveal that the sediment is characterised by a loose, disordered pack-ing of individual crystals, often combined to form aggregates with a tabular structure. The individual calcite grains are usually a few micrometres in size, while developed ones are mostly hypidiomorphic and show signs of corrosion. The sedimentation of the lacustrine chalk indicates that the post-glacial natural development of this part of what today constitutes Szczecin Lagoon differed from that of the rest of the lagoon. This sediment was deposited in a shallow but fertile isolated lake. The full profile of sediments from Lake Nowowarpieńskie reveals its distinct bipartite character, indicating two main stages of its evolution: carbonate and post-carbonate. In the first, the water body showed similarities to the neighbouring lakes of the Wkrzańska Plain. Its evolution was driven by climatic factors. The second stage was initiated by a palaeohydrological factor – Littorina transgression, which resulted in the lake being included into the hydrological system of the Szczecin Lagoon.
Źródło:
Acta Geographica Lodziensia; 2021, 111; 47-57
0065-1249
Pojawia się w:
Acta Geographica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Age and evolution of the Littorina Sea in the light of geochemical analysis and radiocarbon dating sediment of cores from the Arkona Basin and Mecklenburg Bay (SW Baltic Sea)
Autorzy:
Kostecki, R.
Powiązania:
https://bibliotekanauki.pl/articles/295074.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
geochemistry
radiocarbon dating
Ancylus Lake
Littorina Sea
southwestern Baltic Sea
Opis:
Two sediment cores from the Mecklenburg Bay and Arkona Basin were analysed in terms of their geochemical composition and stratigraphy. The main stages of the Baltic Sea evolution – Baltic Ice Lake, Ancylus Lake, and Littorina Sea – were identified in both analysed cores. The most pronounced period was the transition between the Ancylus Lake and the Littorina Sea. The character of the initial stage of the Littorina Sea was clearly defined in the Mecklenburg Bay sediments and is marked by a stepwise increase in loss on ignition and contents of biogenic silica, calcium, magnesium, iron, and strontium. The record of the onset of the Littorina Sea in the Arkona Basin sediments is marked by an abrupt change of the geochemical parameters. The age of the initial Littorina Sea in the Mecklenburg Bay was estimated at about 8200 cal years BP and was probably older than the transgression within the Arkona Basin.
Źródło:
Landform Analysis; 2015, 29; 27-33
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geochemical analysis and petrochemical features of salt rocks from Middle and Upper Famenian saliferous formation of the Prypiat Through
Analiza geochemiczna i cechy petrochemiczne skał solnych środkowo- i górnofameńskiej formacji solonośnej w Zapadlisku Prypeci
Autorzy:
Petrova, N. S.
Denisova, N. Y.
Powiązania:
https://bibliotekanauki.pl/articles/2192085.pdf
Data publikacji:
2017
Wydawca:
Polskie Stowarzyszenie Górnictwa Solnego
Tematy:
Pripyat paleorift
halite
sylvine
carnallite
bromine
paleoryft Prypeci
halit
sylwin
karnalit
brom
Opis:
The specific feature of the Pripyat Trough (paleorift) is presence of the continental crust in the basin basis. Intensity and direction of the processes in the Earth’s crust led to creation of the depression structure. In this structure (basin), the salt formation with potassium salts sedimented during Middle-Upper Famen. Sedimentary rocks of the trough salt formations are represented by the difficult combination of chemogenic-terrigenous and salt rocks in the cross-section. Geochemical and structural-material features of the potash-bearing subformation salt rocks are considered in the article.
Specyficzną cechą Bruzdy Prypeci (paleorifu) jest obecność skorupy ziemskiej w podłożu basenu. Intensywność i kierunek procesów w skorupie ziemskiej doprowadziły do powstania struktury depresyjnej, w której sedymentowały osady. W strukturze (basenie) formacja solonośna z solami potasowymi sedymentowała w środkowym i górnym Famenie. Skały osadowe reprezentowane są przez skomplikowaną serię ewaporatową. Cechy strukturalne i geochemiczne potasowej subformacji zostały opisane w tym artykule.
Źródło:
Przegląd Solny; 2017, 13; 141--145
2300-9349
Pojawia się w:
Przegląd Solny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cechy denudacji w regionie łódzkim w późnym vistulianie w świetle chemicznych badań w osadach torfowiskowych
Denudation features of the Late Vistulian (Weichselian late glacial) preserved in the geochemical analysis of the biogenic deposits of the Łódź Region
Autorzy:
Okupny, Daniel
Fortuniak, Anna
Tomkowiak, Julita
Powiązania:
https://bibliotekanauki.pl/articles/578457.pdf
Data publikacji:
2013
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
torfowisko
osady biogeniczne
geochemia
denudacja
Polska Środkowa
peatland
biogenic deposits
geochemistry
denudation
Central Poland
Opis:
Przedstawiono charakterystykę geochemiczną wybranych torfowisk regionu łódzkiego (Ługi, Podwódka i Rąbień). Celem pracy jest określenie typów i natężenia denudacji w zlewni badanych zbiorników w późnym vistulianie. Miąższość udokumentowanych osadów biogenicznych wynosiła: 2,66 m (profil R-3), 3,0 m (profil Ł-1) oraz 4,75 m (profil P-1). Badania geochemiczne obejmowały oznaczenie podstawowych składników tych osadów, tj. materię organiczną, węglan wapnia, krzemionkę terygeniczną i biogeniczną. Metodą spektrometrii absorpcji atomowej oznaczono pierwiastki pomocne w rekonstrukcji paleograficznej: Na, K, Ca, Mg i Zn. W analizie przemian typów denudacji zlewni, jakie panowały podczas depozycji osadów, wykorzystano wskaźniki geochemiczne odzwierciedlające najważniejsze zmiany w proporcjach oznaczonych elementów
The paper presents the geochemical description of selected peatlands of the Łódź region: Ługi, Podwódka and Rąbień. The aim of this study is evaluation of the type and intensity of the Late Wechselian processes in the peatland catch-ment. The thickness of the document biogenic sediments in the profiles analyzed was: 2,66 m (core R-3), 3,0 m (core Ł-1) and 4,75 m (core P-1). The objective of the geochemical analyses of the above peatlands was identification of basic compo-nents of biogenic sediments, i.e. organic matter, calcium carbonate, terigenic and biogenic silica. In the resulting solution, elements helpful in palaeogeographical reconstruction were identified by the method of atomic absorption spectroscopy: Na, K, Ca, Mg and Zn. The analysis of types of denudation in the catchment following geochemical indices reflecting the most important changes in contribution of marked elements.
Źródło:
Acta Geographica Lodziensia; 2013, 101; 89-99
0065-1249
Pojawia się w:
Acta Geographica Lodziensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 32

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