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    Wyświetlanie 1-12 z 12
    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:
    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:
    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:
    Regionalna wymowa procesów antropogenizacji regionu środkowej Obry na podstawie badań osadów jeziora Wonieść
    Autorzy:
    Hildebrandt-Radke, I.
    Spychalski, W.
    Lutyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/294970.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    middle Obra region
    prehistory
    human impact
    Wonieść lake
    sedimentological
    geochemical
    diatomological analysis
    Opis:
    The study was aimed at anthropogenization processes of the Kościan Plain. They are noticeable in local palynological diagrams (eg. at the archaeological site in Bruszczewo) as well as on settlement maps of the Polish Archaeological Record Project. The goal was to determine whether the processes were perceptible also in a regional scale, in deposits of the biggest water body in the examined area, located 15 km to the east from Bruszczewo. Anthropogenic participation in changes of plant cover is clearly visible in the local diagram from Bruszczewo. While compared with the mentioned, anthropogenic influence in deposits of Wonieść Lake is rather inconspicuous. In the Neolithic and Early Bronze Periods, percentage of herbaceous plants (amount of grasses and herbs) maintained the level of 10%. Increase in NAP is marked not earlier than in the Roman Iron Age, and then from the Early Middle Ages until the present time (Dörfler, to be published soon). Comparison of palynological results to sedimentological analyses indicates that periods of increased values of CerealiaandPlantago lanceolataindices are correlated with inflow of mineral material to lacustrine water body. Larger fractions were observed there i.e. fine- and medium-grained sands, and even gravels as well as organic matter. In the geochemical record for the same periods, an increased percentage of trace elements can be visible (however their distinctive escalation is manifested not earlier than in the Middle Ages). These changes are accompanied by intensified eutrophication index (phosphorus percentage) as well as by occurrence of diatoms, which prefer eutrophic conditions.
    Źródło:
    Landform Analysis; 2011, 16; 92-97
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zapis procesów prehistorycznej antropopresji w otoczeniu stanowiska archeologicznego w Bruszczewie (centralna Wielkopolska) na podstawie badań osadów rynny glacjalnej Samicy
    Autorzy:
    Hildebrandt-Radke, I.
    Janczak-Kostecka, B.
    Spychalski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/295260.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    archaeological settlement
    fossil lake
    glacial trough
    Kościan Plain
    sedimentological
    geochemical
    palynological
    diatomological analysis
    Opis:
    The sedimentological, geochemical and diatomological research into the core taken from the fossil lake located in the glacial channel of Samica river prove the increasing anthropogenization of the landscape in the microregion surrounding the settlement in Bruszczewo. Anthropogenic indices of the Early Bronze Period in the palynological research include: high decline in the percentage of tree pollens caused by deforestation, indicators of grazing animals and farming as well as noticeable eutrophication of the lake (fungal spores and algae thriving on dung, droppings and excrement). In the sedimentological research, cultural layers correspond with accelerated mineral sedimentation in the basin (mediumand fine-grained sands). Each time it is preceded with organic sedimentation (from humus levels). Above results might signify the initiation of erosion-denudation processes in the catchment, settled and economically exploited by individual cultural groups. Results of the anthropogenic activity are visible also in the geochemical composition of the deposits. Cultural layers are marked with increased percentage of heavy metals, while the Cu : Pb : Zn ratios suggest their anthropogenic character. Additionally, the increase in phosphorus percentage confirms eutrophication of the basin in the settlement periods, that is in the Early and Late Bronze, and Early and Roman Iron Ages.
    Źródło:
    Landform Analysis; 2011, 16; 87-91
    1429-799X
    Pojawia się w:
    Landform Analysis
    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:
    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 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:
    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:
    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:
    Wykorzystanie modelowania geochemicznego oraz badań izotopowych siarczanów do identyfikacji procesów kształtujących skład chemiczny wód podziemnych ujęcia Gliwice-Łabędy
    Application of sulfate isotope studies and geochemical modeling in determining processes affecting groundwater chemistry in the Gliwice-Łabędy well-field area
    Autorzy:
    Ślósarczyk, K.
    Jakóbczyk-Karpierz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075850.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    modelowanie geochemiczne
    analiza izotopowa
    dwutlenek węgla
    węglany
    geochemical modeling
    Geochemist’s Workbench
    isotopic analysis
    carbonate aquifer
    Opis:
    In order to determine geochemical processes affecting chemical composition of groundwater in the Gliwice-Łabędy well-field area two research methods were applied. Chemical analysis allowed us to assess the quality of groundwater in the Triassic karst-fractured-porous aquifer of the southwestern part of the major groundwater basin no. 330. The chemical composition of groundwater is distinguished by spatial heterogeneity highlighted by higher mineralization and concentrations of individual ions in the western area. In addition, all samples collected in 2016 were analyzed for the δ34 and δ18 to identify sources of sulfates in the waters examined. The study revealed a different origin of these ions depending on location of the wells sampled. The results of chemical analysis and archival data allowed for application of geochemical modeling in identification ofprocesses taking part in groundwater chemistry evolution. Simulations of processes controlling water chemistry within the Triassic aquifer were conducted using The Geochemist’s Workbench 10.0.6. The examined processes encompassed dissolution of minerals forming the carbonate aquifer and Miocene evaporates overlying the Triassic aquifer as well as mixing ofgroundwater and surface water.
    Źródło:
    Przegląd Geologiczny; 2018, 66, 8; 495--502
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Dobroe 9 site: a stratified Early Neolithic complex in the upper Don River
    Autorzy:
    Yurkina, Elizaveta
    Smol’yaninov, Roman
    Kulichkov, Alexey
    Kul’kova, Marianna
    Zheludkov, Andrey
    Yanish, Yevheniia
    Shatrovaya, Diana
    Powiązania:
    https://bibliotekanauki.pl/articles/1366027.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    Early Neolithic
    Middle Don Culture
    pottery
    flint
    stratigraphy
    geochemical indication
    radiocarbon analysis
    Opis:
    The Middle Don Culture, distributed within the Middle and Upper Don River area, is thought to be one of the earliest Eastern European Neolithic cultures, and is dated to the 6th–5th millennium BC. A group of Neolithic sites was found on the right shore of the Voronezh River, and has been named the “Dobroe sites”. The Dobroe 9 settlement is one of few sites in this region at which an assemblage of Middle Don Culture has been recorded in a clear stratigraphic position. The numerous faunal remains, ceramic complex and stone inventory found at this site allows for a reconstruction of the earliest stages of the Neolithic. The elaborated ceramic typology suggests a gradual transformation of the local culture. The particularity of sedimentation process and deposition of artefacts allowed a precise correlation of stone inventory types with early-Neolithic ceramic types. Preliminary reconstructions of palaeoclimate and episodes of human activity for this time period were implemented based on geochemical methods.
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 33-48
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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