Gotowe bibliografie tematyczne / Glauconites

Spis treści

  1. Artykuły w czasopismach
  2. Rozprawy doktorskie
  3. Książki
  4. Części książek
  5. Streszczenia konferencji

Gotowa bibliografia na temat „Glauconites”

Autor: Grafiati
Data publikacji: 6 września 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Glauconites”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Artykuły w czasopismach na temat "Glauconites"

1

Roy Choudhury, Tathagata, Pragya Singh, Arpita Chakraborty i Santanu Banerjee. "Authigenic Fe Mineralization in Shallow to Marginal Marine Environments: A Case Study from the Late Paleocene—Early Eocene Cambay Shale Formation". Minerals 13, nr 5 (7.05.2023): 646. http://dx.doi.org/10.3390/min13050646.

Pełny tekst źródła
Streszczenie:
The late Paleocene–early Eocene warm greenhouse conditions, characterized by elevated pCO2 levels in the atmosphere and a dramatic increase in sea surface temperature, prompted abundant authigenic glauconite formation within the shallow marine sediments worldwide by lowering the net sedimentation rate, increasing organic productivity and expanding the oxygen minimum zones to shallow oceans. The early Eocene marginal marine Cambay Shale Formation experienced episodes of marine inundation represented by limestone–green shale alternations. The shales host abundant authigenic light-green, dark-green, and brown pellets. A detailed characterization of the pellets of the Valia and Vastan lignite mines, integrating the sedimentological, petrographical, mineralogical, and mineral geochemical data, suggests two distinct varieties of Fe–silicate formation, viz. glauconite and chamosite. While the glauconitic green pellets are ubiquitous to Valia and Vastan mines, brown chamosite pellets are confined within the basal part of the green shale facies alternating with fossiliferous limestone in the Vastan mine. The glauconites of the Valia mine manifest a ‘nascent’ to ‘slightly evolved’ maturation stage of glauconitization, whereas the glauconites of the Vastan mine represent the ‘evolved’ type. The limestone–green shale alternation in the Valia mine is overlain by a ~4 m-thick spherulitic mudstone facies comprising monomineralic sideritic spherulites, reflecting a pure FeCO3 composition. The glauconites in the Cambay Shale Formation transformed from kaolinite-rich clay pellets under dys-oxic depositional conditions. The increasing anoxicity within the microenvironment, possibly amplified by the rapid oxidation of continent-derived organic matter, facilitated chamosite formation instead of glauconite. The increased freshwater influx into the marginal marine depositional environment resulted in immature, K-poor glauconites of the Valia mine. The formation of siderite spherulites overlying the limestone–green shale alternation relates to the beginning of the regressive phase of sedimentation.
Style APA, Harvard, Vancouver, ISO itp.
2

Huggett, J. M., B. Laenen i N. Vandenberghe. "Green clays from the Lower Oligocene of Aardebrug, Belgium: a re-evaluation". Clay Minerals 31, nr 4 (grudzień 1996): 557–62. http://dx.doi.org/10.1180/claymin.1996.031.4.13.

Pełny tekst źródła
Streszczenie:
Porrenga (1968) described the green clays from the Lower Oligocene of Aardebrug, east of Leuven (Louvain) in Belgium as glauconitic illite, a mineral intermediate in chemistry between glauconite and illite, and presumed this clay to be neoformed, though the mode of origin is not discussed. Notably, most of the section from which Porrenga obtained his sample of 'glauconitic illite' is nonmarine. Non-marine glauconites are rare in the literature and there is no standard terminology. Parry and Reeves (1966) reported green pellets of 10 Å clay from recent sediments at Lake Mound, Texas, but with no detrital green clay as source and an authigenic origin is assumed. Green clays described as Fe-rich mica occur in lacustrine environments in the Oligocene of Cantal (Jung, 1954), and the Massif Central (Gabis, 1963) in France. These deposits are derived from altered crystalline basement.
Style APA, Harvard, Vancouver, ISO itp.
3

Bansal, Udita, Santanu Banerjee, Kanchan Pande i Dhiren K. Ruidas. "Unusual seawater composition of the Late Cretaceous Tethys imprinted in glauconite of Narmada basin, central India". Geological Magazine 157, nr 2 (2.07.2019): 233–47. http://dx.doi.org/10.1017/s0016756819000621.

Pełny tekst źródła
Streszczenie:
AbstractA detailed investigation of a glauconite bed within the Late Cretaceous Bryozoan Limestone Formation of the Bagh Group in central India, as well as the study of existing records, reveals the existence of a ‘glauconitic sea’ along the margins of the Palaeo-Tethys Ocean during the Late Cretaceous Epoch. The authigenic green mineral formed abundantly on shallow seafloors unlike in its modern, deep-sea counterpart. We present an integrated petrographical, geochemical and mineralogical investigation of the glauconite within Late Cretaceous transgressive deposits to highlight its unique geochemistry with moderate Fe2O3 and high Al2O3, SiO2, MgO as well as K2O contents. X-ray diffractional parameters identify the ‘evolved to high evolved’ nature of the glauconite while Mössbauer spectroscopic study reveals the dominance of Fe3+ compared to Fe2+ in the atomic structure. The rare earth elements (REE) pattern of glauconite reveals moderate light-REE/heavy-REE (LREE/HREE) fractionation and weak negative Eu anomaly. The Ce anomaly of the glauconite indicates a sub-oxic diagenetic condition. We propose that Late Cretaceous glauconites formed within a shallow marine depositional setting across the Tethyan belt because of enhanced supply of K, Si, Al, Fe, Mg cations through continental weathering under the extant greenhouse climate.
Style APA, Harvard, Vancouver, ISO itp.
4

Xadjibaev, D., i F. Erkabaev. "SELECTION OF MINERAL RAW MATERIAL FIELDS FOR GLAUCONITE SORPTION MATERIALS". Technical science and innovation 2021, nr 1 (10.05.2021): 11–18. http://dx.doi.org/10.51346/tstu-02.21.1-77-0002.

Pełny tekst źródła
Streszczenie:
Natural minerals, such as bentonite, kaolinite, biotite, vermiculite, and glauconite, which have sufficiently high performance properties in the softening of industrial and waste water, softening and cleaning of heavy metals, are promising. To study the physical and chemical properties of glauconites from various deposits of the country, samples of glauconite mineral were brought from the Parkent, Bukhara, and Karakalpak mountain reserves, their physical and chemical properties were studied, compared with each other, and the optimal reserve was selected. The reserves of these deposits are sufficient and have the potential for industrial development. The purpose of this study is to compare samples of natural mineral reserves of glauconite and select the optimal deposit for raw materials. Methodology. Samples of glauconite minerals from the Parkent, Bukhara and Karakalpak mines were taken as the object of the study. Chemical, mineralogical, and thermal analyses were performed on the samples, and the fractional composition was determined. Scientific novelty. The main part of the mineral glauconite (50-55%) in the raw material is found in fractions of 0.08-0.125 mm. The most suitable raw material was the Parkent glauconite deposit, which has a relatively high content of potassium, which tends to exchange with other metals during the sorption process. The received data. Based on the conducted experiments, samples of glauconites from Parkent, Bukhara, and Karakalpak were subjected to chemical and mineralogical analyses. The maximum amount of the mineral glauconite was found in the fractions of the raw material (less than 0.125 mm). The most suitable deposit of raw materials for processing the mineral glauconite was selected and an environmentally friendly adsorbent was obtained.
Style APA, Harvard, Vancouver, ISO itp.
5

Roy Choudhury, Tathagata, Santanu Banerjee, Sonal Khanolkar i Sher Singh Meena. "Paleoenvironmental Conditions during the Paleocene–Eocene Transition Imprinted within the Glauconitic Giral Member of the Barmer Basin, India". Minerals 12, nr 1 (31.12.2021): 56. http://dx.doi.org/10.3390/min12010056.

Pełny tekst źródła
Streszczenie:
The roughly 6 m thick limestone–green shale alternation within the lignite-bearing Giral Member of the Barmer Basin corresponds to a marine flooding event immediately after the Paleocene–Eocene transition. A detailed characterization of the glauconite using Electron Probe Micro Analyzer (EPMA), X-Ray Diffraction (XRD), Mössbauer and Field Emission Gun-Scanning Electron Microscope (FEG-SEM) reveals its origin in the backdrop of prevailing warm climatic conditions. The glauconite pellets vary from fine silt-sized to coarse sand-sized pellets, often reaching ~60% of the rock by volume. Mineralogical investigation reveals a ‘nascent’ to ‘slightly evolved’ character of the marginal marine-originated glauconite showing considerable interstratification. The chemical composition of the glauconite is unusual with a high Al2O3 (>10 wt%) and moderately high Fe2O3(total) contents (>15 wt%). While the K2O content of these glauconites is low, the interlayer sites are atypically rich in Na2O, frequently occupying ~33% of the total interlayer sites. The Mössbauer spectrum indicates 10% of the total iron is in ferrous form. High tetrahedral Al3+ of these glauconites suggests a high-alumina substrate that transformed to glauconite by octahedral Al-for-Fe substitution followed by the addition of K into the interlayer structure. The unusually high Na2O suggests the possibility of a soda-rich pore water formed by the dissolution of alkaline volcanic minerals. The Giral glauconite formation could have been a part of the major contributors in the Fe-sequestration cycle in the Early Eocene shelves. Warm climate during the Early Eocene time favored the glauconitization because of the enhanced supply of Fe, Al, and Si and proliferation of an oxygen-depleted depositional environment.
Style APA, Harvard, Vancouver, ISO itp.
6

Parron, C., i M. Amouric. "Crystallochemical heterogeneity of glauconites and the related problem of glauconite - celadonite distinction". Chemical Geology 84, nr 1-4 (lipiec 1990): 286–89. http://dx.doi.org/10.1016/0009-2541(90)90240-8.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Scheiblhofer, Esther, Ulrike Moser, Stefan Lӧhr, Markus Wilmsen, Juraj Farkaš, Daniela Gallhofer, Alice Matsdotter Bäckström, Thomas Zack i Andre Baldermann. "Revisiting Glauconite Geochronology: Lessons Learned from In Situ Radiometric Dating of a Glauconite-Rich Cretaceous Shelfal Sequence". Minerals 12, nr 7 (27.06.2022): 818. http://dx.doi.org/10.3390/min12070818.

Pełny tekst źródła
Streszczenie:
The scarcity of well-preserved and directly dateable sedimentary sequences is a major impediment to inferring the Earth’s paleo-environmental evolution. The authigenic mineral glauconite can potentially provide absolute stratigraphic ages for sedimentary sequences and constraints on paleo-depositional conditions. This requires improved approaches for measuring and interpreting glauconite formation ages. Here, glauconite from a Cretaceous shelfal sequence (Langenstein, northern Germany) was characterized using petrographical, geochemical (EMP), andmineralogical (XRD) screening methods before in situ Rb-Sr dating via LA-ICP-MS/MS. The obtained glauconite ages (~101 to 97 Ma) partly overlap with the depositional age of the Langenstein sequence (±3 Ma), but without the expected stratigraphic age progression, which we attribute to detrital and diagenetic illitic phase impurities inside the glauconites. Using a novel age deconvolution approach, which combines the new Rb-Sr dataset with published K-Ar ages, we recalculate the glauconite bulk ages to obtain stratigraphically significant ‘pure’ glauconite ages (~100 to 96 Ma). Thus, our results show that pristine ages can be preserved in mineralogically complex glauconite grains even under burial diagenetic conditions (T < 65 °C; <1500 m depth), confirming that glauconite could be a suitable archive for paleo-environmental reconstructions and direct sediment dating.
Style APA, Harvard, Vancouver, ISO itp.
8

Zviagina, Bella B., Victor A. Drits i Olga V. Dorzhieva. "Distinguishing Features and Identification Criteria for K-Dioctahedral 1M Micas (Illite-Aluminoceladonite and Illite-Glauconite-Celadonite Series) from Middle-Infrared Spectroscopy Data". Minerals 10, nr 2 (11.02.2020): 153. http://dx.doi.org/10.3390/min10020153.

Pełny tekst źródła
Streszczenie:
A representative collection of K-dioctahedral 1M micas ranging in composition from (Mg, Fe)-poor illites to aluminoceladonites through Mg-rich illites (Fe-poor varieties) and from Fe-bearing, Mg-rich illites to celadonites through Fe-illites, Al-glauconites and glauconites (Fe-bearing varieties) was studied by Fourier-transform infrared (FTIR) spectroscopy in the middle-infrared region. Analysis and comparison of the relationships between the band positions and cation compositions of Fe-poor and Fe-bearing K-dioctahedral micas provided a generalized set of FTIR identification criteria that include the band positions and profiles in the regions of Si–O bending, Si–O stretching, and OH-stretching vibrations. FTIR data allow unambiguous identification of illites, aluminoceladonites, and celadonites, as well as distinction between Fe-illites and illites proper, as well as between Al-glauconites and glauconites. Specifically, a sharp maximum from the AlOHMg stretching vibration at ~3600 cm−1, the presence of a MgOHMg stretching vibration at 3583–3585 cm−1, as well as characteristic band positions in the Si–O bending (435–439, 468–472 and 509–520 cm−1) and stretching regions (985–1012 and 1090–1112 cm−1) are clearly indicative of aluminoceladonite. The distinction between Fe-illites and Al-glauconites, which have similar FTIR features, requires data on cation composition and unit-cell parameters.
Style APA, Harvard, Vancouver, ISO itp.
9

López-Quirós, Adrián, Antonio Sánchez-Navas, Fernando Nieto i Carlota Escutia. "New insights into the nature of glauconite". American Mineralogist 105, nr 5 (1.05.2020): 674–86. http://dx.doi.org/10.2138/am-2020-7341.

Pełny tekst źródła
Streszczenie:
Abstract Glauconite must be assessed as mica-rich mica-smectite R3 interstratified mineral, with the pure end-member mica also having intrinsic K-deficient chemical characteristics (K+ ~ 0.8 apfu). This assertion is in accordance with our X-ray diffraction (XRD) and high-resolution tranmission electron microscopy (HRTEM) studies and chemical analyses by electron probe microanalysis (EPMA) of mature glauconites in Cenozoic Antarctic sediments that indicate that: (1) It consists of a glauconite-smectite (R3 ordered) mixed-layer silicate, composed mainly of mica-type layers (&gt;90%), but displaying slightly different proportions of Fe(III)-smectite layers (&lt;10%). (2) More mature glaucony grains are characterized by major K+ and VIFe2+ (mica layers) and minor VIFe3+ (smectite layers) content in the interstratified glauconite-smectite. (3) Potassium is stabilized at the interlayer site by the octahedrally coordinated Fe2+. (4) Microtexture of the glauconite crystals are comparable with those of other micas and illite minerals, with straight, defect-free lattice fringes of ~10 Å spacings glauconite packets characteristic of mica with minor interstratified poorly crystalline smectite layers. In addition, our new findings give insights into the glauconitization process and at the same time investigate the potassium-deficient character of the dioctahedral mica “glauconite.” These findings show that glauconite crystallizes by a layer-growth mechanism at the expense of a poorly crystalline smectite precursor and that smectiteto-glauconite transformations are accompanied by a gradually higher octahedral charge deficiency (Fe2+/Fe3+) stabilized by K+ uptake into the interlayer sheet.
Style APA, Harvard, Vancouver, ISO itp.
10

Sakharov, B. A., G. Besson, V. A. Drits, M. Yu Kameneva, A. L. Salyn i B. B. Smoliar. "X-ray study of the nature of stacking faults in the structure of glauconites". Clay Minerals 25, nr 4 (grudzień 1990): 419–35. http://dx.doi.org/10.1180/claymin.1990.025.4.02.

Pełny tekst źródła
Streszczenie:
AbstractGlauconites are dioctahedral, microdivided, Fe-containing silicates whose idealized structure may be described as a stacking of 2 : 1 layers with the same azimuthal orientation. The diffractometric and crystallochemical data do not coincide with this idealized structural model. For each glauconite studied the best fit between experimental and theoretical XRD patterns was obtained using the same model. It was possible to describe the stacking by an equally probable occurrence of layers rotated by multiples of 60°. The layer types alternate with a definite tendency to segregation. The model is characteristic for all glauconites, irrespective of composition, age and type of host rock. The alternation of layers rotated by 60° in the structure leads to both octahedral and prismatic coordination for the interlayer K+ cation.
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Rozprawy doktorskie na temat "Glauconites"

1

Furquim, Sheila Aparecida Correia. "Formação de carbonatos e argilo-minerais em solos sódicos do pantanal sul-mato-grossense". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/8/8135/tde-18102007-142817/.

Pełny tekst źródła
Streszczenie:
Uma característica de destaque da Nhecolândia, uma sub-região do Pantanal Sul-Mato- Grossense, é a presença de lagoas doces (baías) e salgadas (salinas) com uma grande variabilidade química entre si. Apesar da presença de sal nas salinas ser historicamente atribuída a processos passados, estudos recentes sugerem que as águas salgadas estão sendo originadas atualmente devido à concentração por evaporação. O perfil químico das águas salinas estaria sendo originado principalmente pelo controle de elementos (Ca2+, Mg2+ e Si(OH)4) durante a concentração das águas, com o conseqüente envolvimento destes íons em dois processos: a formação de carbonatos e de silicatos magnesianos. Estudos preliminares em solos de salinas sugerem que a ocorrência de nódulos esbranquiçados e a presença de um horizonte enriquecido em argila podem evidenciar estes dois processos. Neste tipo de ambiente, carbonatos como calcita e dolomita são comumente neoformados, mas há divergências na literatura quanto ao mecanismo de origem autigênica dos silicatos magnesianos. Baseando-se no exposto acima, foram definidos os seguintes objetivos para a presente pesquisa: 1) ampliar o conhecimento sobre os solos associados às salinas através de uma caracterização baseada em dados de campo e laboratório dos solos presentes no entorno de uma lagoa salina representativa da Nhecolândia (lagoa do Meio); 2) identificar os processos envolvidos no controle do Ca2+, Mg2+ e Si(OH)4 nas águas salinas, através do estudo das relações entre as fases líquidas (águas superficiais e subsuperficiais) e sólidas (minerais) presentes nos solos do entorno da lagoa do Meio; e 3) identificar os mecanismos específicos de gênese dos minerais autigênicos possivelmente presentes nos solos do entorno da lagoa do Meio. As amostras de solo foram coletadas ao longo de uma topossequência nos arredores da lagoa do Meio e submetidas à análise granulométrica, análises químicas (ICP-MS, pH, CE, carbono total, carbonato de cálcio equivalente, bases trocáveis e testes de imersão em água, ácido e bases) e análises mineralógicas (DRX, MET-EDS). Amostras de água superficiais e subsuperficiais foram coletadas em um transecto que abarca a topossequência estudada e então encaminhadas às análises de pH, Eh, CE, temperatura, titulação com HCl, cromatografia de íons, EAA e ICP-MS. Os solos dos arredores da salina do Meio caracterizam-se pela textura areia a franco-arenosa, pela ausência de estrutura e, de maneira geral, por altos valores de pH, CE, CTC e saturação em Na+. O pH fortemente alcalino e o domínio de Na+ no complexo de troca desencadeiam a atuação do processo de solonização e dos seguintes processos específicos associados: migração de matéria orgânica perfil abaixo, precipitação de carbonatos (calcita, dolomita e nahcolita) em nódulos, solubilização/precipitação de sílica amorfa e formação autigênica de minerais de argila do grupo das esmectitas e micas. Diferentes esmectitas estão presentes ao longo da topossequência: a) na zona raramente atingida pelas variações sazonais do nível d\'água da salina, a esmectita é do tipo ferribeidelita, possui um grau de interestratificação com mica e vermiculita e apresenta teores de Fe3+ similares às micas identificadas no mesmo solo. Estas características sugerem que o mineral do tipo ferribeidelita é originado pela transformação de micas enriquecidas em Fe3+, sendo a vermiculita provavelmente uma fase intermediária nesta transformação; b) na zona de maior variação sazonal do nível d\'água da salina, as esmectitas são classificadas como do tipo saponita e estevensita. Os baixos teores de elementos terras-raras nas amostras enriquecidas nestes minerais, o controle do Mg2+ e do Si(OH)4 nas águas próximas à lagoa do Meio, a saturação das águas do entorno da lagoa em relação a saponita e estevensita e a presença destas esmectitas magnesianas nos locais onde são esperadas máximas taxas de evaporação, provam que estes minerais estão se originando por precipitação química diretamente da coluna d\'água da lagoa salina. Já as micas presentes nos solos estudados são do tipo ilita, glauconita e mica glauconítica, possuem interestratificação com camadas de esmectitas e parecem estar associadas a materiais amorfos. Experimentos de síntese disponíveis na literatura mostram que águas semelhantes às associadas à lagoa do Meio são ideais para a cristalização de micas a partir da precipitação inicial de hidróxidos amorfos. Desta forma, as evidências obtidas sugerem que estas micas são neoformadas a partir da precipitação inicial de amorfos e posterior cristalização. Os resultados obtidos certamente ampliaram o conhecimento sobre os solos presentes no entorno de lagoas salinas, uma vez os estudos disponíveis na literatura são baseados quase que exclusivamente em dados de campo. Mostrou-se que o controle do Ca2+ das águas mais salinas está sendo realizado pela formação de calcita e dolomita em nódulos, enquanto o controle do Mg2+ e do Si(OH)4 está ocorrendo pela formação de esmectitas magnesianas do tipo saponita e estevensita. Estes processos são provavelmente os responsáveis pela alta variabilidade entre as águas doces das baías/vazantes e as salgadas das salinas/arredores, conforme hipótese lançada em literatura. Assim, o presente trabalho fornece fortes evidências de que a presença de sal nas águas das lagoas salinas da Nhecolândia é atual ou, ao menos, tem contribuição de processos atuais. Por fim, mostrou-se ser possível a formação conjunta de ilita, glauconita e mica glauconítica e de esmectitas do tipo saponita e estevensita pelo mecanismo de precipitação diretamente das águas ou soluções em ambientes sujeitos a concentração evaporativa.
A distinctive feature of Nhecolândia, a sub-region of the Pantanal wetland, is the presence in close proximity of freshwater and saline lakes with a huge chemical variability. The salt has been generally attributed to Pleistocene processes, but recent studies have suggested that saline waters arise from present-day concentration of freshwater by evaporation. The chemical profile of saline waters would be originated by chemical control of Ca2+, Mg2+, and Si(OH)4 as the water becomes more saline. Two processes would be responsible for this control: formation of carbonates and formation of Mg-silicates. The presence of whitish nodules and clayey horizons in soils associated to the saline lakes would be evidences of these processes. In saline-alkaline environments, carbonates such as calcite and dolomite are commonly formed by chemical precipitation, but the mechanisms responsible for Mgsilicates genesis are still under debate. The objectives of this research are: a) increasing the general knowledge about soils associated to Pantanal saline lakes through a detailed characterization of the soils located around a representative saline lake of Nhecolândia (\"Salina do Meio\"); b) identifying the processes involved in Ca2+, Mg2+ and Si(OH)4 control from saline waters, through the study of relationships between waters and minerals present in the soils around \"Salina do Meio\"; c) identifying the specific mechanisms of authigenic genesis of the minerals possibly found around \"Salina do Meio\". Soils were sampling along a toposequence and submitted to physical (particle-size), chemical (ICP-MS, pH, EC, total carbon, inorganic carbonate, exchangeable bases, and soaking in H2O, HCl 1N, and NaOH 4M), and mineralogical analyses (XRD and TEM-EDS). Water was collected along a transect involving the lake and submitted to pH, Eh, EC, temperature, titration with HCl, ion chromatography, and ICP-MS analyses. The studied soils are sandy, structureless, and present, in general, high values of pH, CE, CEC, and Na+ saturation. Prevailing of Na+ in the waters and exchangeable sites and dominance of extremely high pH strongly suggest the general action of solonization in these soils and its influence on the following processes: organic matter translocation toward deeper horizons, precipitation of carbonates (calcite, dolomite, and nahcolite) in nodules, precipitation of amorphous silica, and authigenic formation of smectites and micas. Different authigenic smectites occur along the toposequence: a) in the zone hardly reached by the lake level variation, the smectite is classified as ferribeidellite-type, present an interstratification with mica and vermiculite, and has similar amounts of Fe3+ than the Fe-mica present in the soils. These characteristics suggest that this ferribeidellite-type mineral originates from transformation of Fe-mica and that vermiculite may be an intermediate phase in this transformation; b) in the zone of seasonal lake level variation, the smectites are classified as saponite- and stevensite-type minerals. Low REE amounts in the samples enriched in saponite and stevensite, geochemical control of Mg2+ and Si(OH)4, saturation with respect to Mg smectite in the more saline waters, and presence of Mg-smectite where the maximum of evaporation is expected, prove that saponite- and stevensite-like minerals originate by chemical precipitation from the water column of the saline lake. The micas present in the studied soils are classified as illite-, glauconite- and glauconitic mica-type minerals. They present 20% or less smectite layers and seem to be associated to amorphous materials. Synthesis of micas available in the literature shows that water conditions similar to the study area allow for dioctahedral mica crystallization from initial precipitation of amorphous hydroxides. Therefore, it suggests that micas of study area are neoformed. The results of this dissertation contributed to a better understanding about the soils associated to Nhecolândia saline lakes, since most of the published researches are based on field data. The control of Ca2+ from more saline waters occurs by formation of calcite and dolomite in nodules, while the control of Mg2+ and Si(OH)4 occur by formation of Mg-smectites classified as saponite- and stevensite-type. These processes are probably responsible for the chemical variability between freshwater and saline lakes, as supposed in a previous research. Therefore, the present work gives strong evidences about the current origin of Nhecolândia salt water. Also, it showed the possibility of genesis of illite, glauconita, glauconitic mica, saponite, and stevensite minerals through direct precipitation of waters or soil solutions under concentration by evaporation.
Style APA, Harvard, Vancouver, ISO itp.
2

Smaill, Joshua Ballantyne. "Geochemical variations in glauconitic minerals : application as a potassium fertiliser resource". Thesis, University of Canterbury. Geological Sciences, 2015. http://hdl.handle.net/10092/10407.

Pełny tekst źródła
Streszczenie:
Nutrients for plant growth are often limited in soil systems and additions are required in the form of fertiliser. Potassium is an essential macro-nutrient for plants and demands for K are expected to increase in the future. Glaucony is an abundant marine mineral which may provide an alternative K-rich fertiliser resource. The South Island of New Zealand contains deposits of glaucony-rich rocks which were deposited in the Early- to Mid-Cenozoic during periods of low sedimentation to the seafloor. Here, the geochemistry of glaucony from the Waitaki Basin (Otago), the Waipara Greensand (North Canterbury) and the Stoney Creek Limestone (Karamea) was examined using spatially resolved geochemical analysis and dissolution experiments. Grain-by-grain analysis using Laser Ablation Induction Coupled Plasma Mass Spectrscopy (LA-ICP-MS) and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM + EDS) revealed that glaucony from all deposits were of the mature type and were enriched in K. Glaucony derived from growth inside faecal pellets was found to contain elevated K and Fe concentrations compared to bioclast hosted glaucony. These variations can be explained by the physical properties of host grains and sea-floor redox conditions at the time of precipitation, both of which increased ionic mobility into the zone of glauconitisation. Solubility analysis showed that K^{+} was released from glaucony more rapidly than any other element. Additionally, decreasing the pH and introducing an oxidising agent (i.e, birnessite which is ubiquitous in soil environments) accelerated K^{+} release 13-fold. Trace metals including Cr, Zn, Cu and Ni were present in the solid phase analysis, however further investigation revealed that these elements were released into solution in low concentrations and may present a source of micro-nutrients, not a soil contaminant. These results suggest that glaucony may offer a source of slow releasing K fertiliser, and the South Island of New Zealand is ideally situated as a place to consider using glaucony as a locally sourced, environmentally sustainable K resource for agriculture.
Style APA, Harvard, Vancouver, ISO itp.
3

Tallobre, Cedric. "Mise en évidence d’un système de dépôt contouritique et des processus sédimentaires associés sur le plateau de Demerara (marge guyanaise)". Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0002/document.

Pełny tekst źródła
Streszczenie:
Le plateau de Demerara est un plateau marginal situé le long de la marge de la Guyane française et du Surinam. Grâce aux données récentes acquises lors de la campagne IGUANES, avec des données géophysiques et des carottes sédimentaires, certaines structures sédimentaires illustrent une forte influence du courant sur la construction récente de cette marge.Les géométries sédimentaires suggèrent la présence d'un Système de Dépôt contouritique (CDS) sur ce plateau. Le fond marin est marqué par la présence de structures longitudinales formées par l'activité actuelle: « giant flute casts » ou queues de comètes et des « longitudinal waves ». Sur la base de l'analyse des données chirp et des carottes, la présence de processus contouritiques a été identifiée sur les plateaux marginaux intermédiaires et inférieurs. Cette contourite est probablement induite par la circulation de la NADW. Des structures sédimentaires sont présentes et enregistrées après cet événement : des « comet marks » et des « longitudinal waves ».Le contourite sur ce plateau est constitué de sédiments riches en illustrant le vannage induit par les courants de fond. L'étude des carottes sédimentaires associées à un cadre chrono-stratigraphique permet d'identifier les caractéristiques sédimentaires en fonction de l'intensité du courant. La glauconite, minéral authigénique, est utilisé comme un nouvel outil qui, couplé à des analyses granulométriques et de faciès, permet d’enregistrer les variations du vannage. Sur le plateau de Demerara, la sédimentation indiquent des taux d'accumulation sédimentaire faibles et des courants de fond intenses pendant les périodes glaciaires.La présence de contourites le long du plateau de Demerara et le long d'autres plateaux marginaux montre l'impact fort de tels reliefs bathymétriques sur la circulation océanique
The Demerara Plateau is a marginal plateau located along the French Guyana and Surinam margin. Thanks to the recent data acquired during the IGUANES cruise, with geophysical data and sedimentary cores, some sedimentary structures illustrate a strong current influence on the recent building of this margin. The sedimentary geometries suggest the presence of a Contourite Depositional System (CDS). The seafloor is marked by the presence of longitudinal structures formed by the current activity: giant flute clasts or comet marks, and longitudinal waves. Based on the chirp data analysis and on cores, some sedimentary domains are identified on the Demerara marginal plateau. The intermediate and the lower marginal plateaus are affected by contouritic process with two moats and a mounded elongated drift. This contourite is likely induced by the NADW circulation. The contourite on this plateau is made of glauconitic rich sediments inside the moat showing the winnowing effect induced by the bottom currents. The detailed study of sedimentary cores associated with a chronostratigraphic framework allows identifying the sedimentation features depending on current intensity through time. The glaucony authigenic mineral is used as a main proxy, coupled with grain-size and facies analyses, for inferring the degree of winnowing at the sediment-water interface. On the Demerara plateau, the sedimentation suggests low sediment accumulation rates and quite energetic bottom currents during ice periods.The presence of contourites along the Demerara Plateau and along other marginal plateaus shows the strong impact of such deep-sea marginal bathymetric reliefs on the oceanic circulation
Style APA, Harvard, Vancouver, ISO itp.
4

Koladich, Andre Myles. "Sedimentology, sequence stratigraphy, and reservoir quality of the Lower Cretaceous Glauconitic Sandstone, southeastern Alberta". Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26680.

Pełny tekst źródła
Streszczenie:
The Lower Cretaceous (Albian) Glauconitic Sandstone is the lowermost stratigraphic unit of the Upper Mannville interval in southern Alberta. It overlies calcareous and fossiliferous strata of the Ostracode Limestone and is unconformably overlain by feldspathic and lithic-rich fluvial sandstone of the undifferentiated Upper Mannville. In the study area, Glauconitic Sandstone strata comprise three facies associations consisting of prograding shoreface to shallow shelf (FA1I), upper estuary channel fill (FA2) and tidally-influenced abandoned channel fill/interchannel (FA3) deposits. The Jenner Upper Mannville E Pool is a 10 km long by 2 km wide north-south trending conventional oil pool located in Townships 19--20, Range 9W4 in southeastern Alberta. Since its discovery in 1963, the pool has produced 7.3 million barrels of 21.1° API oil and 6.7 billion cubic feet of gas from the Glauconitic Sandstone. The original oil in place is 28.6 mmbbl and estimated remaining reserves are of the order of 700 mbbl.
Style APA, Harvard, Vancouver, ISO itp.
5

Thompson, Nicholas Kim. "Cool-water Carbonate Sedimentology and Sequence Stratigraphy of the Waitaki Region, South Island, New Zealand". Thesis, University of Canterbury. Geological Sciences, 2013. http://hdl.handle.net/10092/8799.

Pełny tekst źródła
Streszczenie:
In the mid-Cenozoic, New Zealand underwent slow subsidence interspersed with unconformity development, however significant controversy exists around both the extent of submergence below sea level during this period of maximum drowning, as well as the causes of these unconformities. Detailed field observations, combined with extensive petrographic analyses, stable isotopes, cathodoluminescence, and thin section staining were used to develop lithofacies, depositional, and sequence stratigraphic models of the mid-Cenozoic succession in the Waitaki region, South Island, to address these controversies. Twelve facies types have been described for Late Eocene-Early Miocene sedimentary rocks, leading to the identification of two major (Mid Oligocene & Early Miocene) and one minor (Late Oligocene) sequence boundaries. Surtseyan volcanism in the east produced a palaeohigh, resulting in a submerged rimmed cool-water carbonate platform, with low-lying land to the west. This eastern palaeohigh developed karst during sea-level lowstands, which correlate with silty submarine bored hardgrounds in the west. Glauconitic and phosphatic facies deposited during early marine transgression suggest an authigenic factory supplied by terrigenous clays existed during lowered sea level that was progressively shut down in favour of a carbonate factory as sea level rose and terrigenous supply decreased. The eastern palaeohigh served to nucleate this carbonate factory by raising the sea floor above the influence of siliciclastic sediment supply and providing a shallow substrate for marine colonisation. The higher energy eastern facies display dissolution of aragonitic taxa, while deeper western facies retained an aragonitic assemblage. This early bathymetric high created a barrier to submarine currents, but was gradually reduced by erosion during subsequent lowstands. Calcareous facies were often subjected to minor seafloor cement precipitation to shallow burial diagenesis, while eastern facies developed some meteoric cement during subaerial exposure. Comparisons between sea-level change in the study area and the New Zealand megasequence indicate eustatic changes as the primary driver of water depth in the Waitaki region until the development of the modern plate boundary in the Early Miocene.
Style APA, Harvard, Vancouver, ISO itp.
6

Campbell, Leslie Ann. "Palaeoecology of the middle to late Cambrian Rogersville Shale, Conasauga Group, eastern Tennessee". Thesis, Boston College, 2008. http://hdl.handle.net/2345/351.

Pełny tekst źródła
Streszczenie:
Thesis advisor: Paul Strother
The Rogersville Shale of the Middle to Late Cambrian Conasauga Group was deposited on the margins of Laurentia, in what is now eastern Tennessee. Based on 21 thin section samples from the ORNL-Joy2, core five distinct microlithofacies are described, trace fossils characterized, and palynological data interpreted. This investigation concluded that the Rogersville Shale was deposited in a shallow, restricted marine or possibly estuarine environment that would have been exposed to terrestrial runoff. Previous work on the Conasauga Group placed deposition of the Rogersville Shale within an intercratonic basin in approximately 250m of water, perhaps significantly deeper. This investigation found that the Rogersville Shale was likely deposited in a lagoonal setting or restricted estuarine environment that had freshwater input
Thesis (MS) — Boston College, 2008
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Geology and Geophysics
Style APA, Harvard, Vancouver, ISO itp.
7

Udgata, Devi Bhagabati Prasad. "Glauconite as an indicator of sequence stratigraphic packages in a Lower Paleocene passive-margin shelf succession, Central Alabama". Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/UDGATA_DEVI_55.pdf.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Udgata, Devi Bhagabati Prasad. "DEPOSITIONAL AND STRATIGRAPHIC SIGNIFICANCE OF MARINE, GREEN-CLAY, MINERAL FACIES IN THE LOWER-MIDDLE MISSISSIPPIAN BORDEN AND FORT PAYNE FORMATIONS, WESTERN APPALACHIAN AND EASTERN ILLINOIS BASINS, KENTUCKY". UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_diss/808.

Pełny tekst źródła
Streszczenie:
Detailed study of strata associated with the glauconite-rich Floyds Knob Bed in the western Appalachian and eastern Illinois basins have corroborated previous interpretations that the unit is a widespread, largely synchronous marker horizon. However, in some areas there are multiple glauconite beds; in others a distinct bed is lacking, but the glauconite is dispersed throughout many beds, forming an interval rather than a distinct bed. In Kentucky and adjacent states, the Floyds Knob interval, in upper parts of the Lower-Middle Mississippian Borden-Grainger delta sequence and in lower parts of the Fort Payne carbonate sequence, was deposited at the end of loading-type relaxation during a flexural cycle in the Neoacadian (final) tectophase of the Acadian Orogeny. Tectonic influence, combined with a major late Osagean sea-level lowstand, created conditions that generated sediment starvation and shallower seas across widespread parts of the western Appalachian and eastern Illinois basins. In the absence of major sediment influx, glauconite was deposited uniformly across many major depositional settings, ranging from delta-platform to basinal environments. Especially important, however, is the newly reported occurrence of the Floyds Knob interval in basinal Fort Payne environments from south-central Kentucky, where it is represented by a thick, pelletal, glauconite-rich horizon that separates clastics at the base of the Fort. Payne Formation from carbonates at top. The study also provides the first-ever radiometric dating of the Floyds Knob glauconites, which suggests a late Osagean origin. These results support the existing biostratigraphic studies that point to a late Osagean origin for the Floyds Knob interval.
Style APA, Harvard, Vancouver, ISO itp.
9

Kapoutsos, David. "Provenance changes and glauconite formation in the Broken River to Iron Creek/Waipara Greensand Formations marks the late Cretaceous-Eocene transgression". Thesis, University of Canterbury. Department of Geology, 2005. http://hdl.handle.net/10092/3181.

Pełny tekst źródła
Streszczenie:
Detailed provenance analysis and glauconite morphology of the Broken River and Iron CreeklWaipara Formations and other correlatives were conducted at 6 localities: the MandamusDove River area, Waipara River, Avoca-Iron Creek, Castle Hill Basin, Malvern and Mt Somers. The basal Broken River Formation is a fluvial boulder conglomerate interbedded with sandstones, mudstones and coal dated as Haumurian (Late Cretaceous) by pollen. The transgression is marked by a gradual drowning of the fluvial conglomerates with minor glauconite appearing in the beds immediately overlying the conglomerates in alllocali ties. The estuarine-marginal marine I lower shoreface succession of the Broken River Formation contains minor nascent micaceous glauconite. This increases in the overlying Iron Creek I Waipara Formations to 30-60% glauconite composed of nascent-micaceous to evolved/mature glauconity types characteristic oflower shoreface I foreshore to shallow shelf depositional setting. Up section, evolved mature glaucony dominates, in some beds formed in situ (autochthonous) and in other beds transported from nearby (parautochthonous) to line foresets. An extremely low sedimentation rate is necessary to form the evolved I mature type of glauconite. The age of the greensands is Teurian to Whaingaroan (Late Paleocene-Late Eocene). Overall the glauconite analysis indicates extremely low sedimentation rates with autochthonous I parautochthonous glaucony formation in nearshore marine settings, possibly even estuary environments. Clast counts from the basal conglomerates indicate derivation from local sources such as the underlying Torlesse greywackes (Pahau and Rakaia Terranes) and/or the Mandamus Igneous Complex. Sandstone composition indicates the addition of more distal sources. Quartzose sandstones plot in the interior craton province in QFL plots for both Broken River and Iron Creek/Waipara Greensand Formations. Sandstone lithics are probably derived from the underlying Torlesse greywacke. Alkali feldspar dominates over plagioclase indicating a probable plutonic felsic source. SEM-cathodoluminescence on quartz grains indicates a bimodal metamorphic to plutonic quartz grains with minor volcanic input. Plutonic grains are identified by healed microcracks, and are possibly derived from Western Province plutonic suites such as the Karamea and Separation Point Batholiths. Polycrystalline/dark CL quartz grains indicate a relatively high grade metamorphic source such as the OtagolHaast Schist while dark CL monocrystalline quartz grains indicate a low to medium metamorphic grade source such as the Alpine Schist. Volcanic quartz is zoned with straight extinction and was most likely derived from the Cretaceous Mount Somers Volcanics Group. Overall the provenance suggests local derivation of sediments when coarse fluvial deposition occurred followed by more distal derivation once transported in the nearshore marine setting.
Style APA, Harvard, Vancouver, ISO itp.
10

Леськів, Г. З., i H. Z. Leskiv. "Очищення стічних вод від барвників шляхом адсорбції на природних дисперсних сорбентах: дисертація". Thesis, НУ ЛП, 2008. http://dspace.lvduvs.edu.ua/handle/1234567890/424.

Pełny tekst źródła
Streszczenie:
Леськів Г.З. Очищення стічних вод від барвників шляхом адсорбції на природних дисперсних сорбентах.: дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 21.06.01 – екологічна безпека / Леськів Галина Зіновіївна. - Львів: Національний університет “Львівська політехніка”, 2008. - 123 с.
Дисертацію присвячено розробленню технології очищення стічних вод від органічних барвників шляхом їхньої адсорбції на природних дисперсних сорбентах – глауконіті та палигорськіті. Здійснено моніторинг забруднень поверхневих вод України органічними барвниками зважаючи на локалізацію підприємств, які виробляють і застосовують барвники у своїх технологіях. Виконано токсикологічну оцінку барвників, від яких досліджено очищення стоків, а саме – активного алого 4ЖТ та аніонного червоного 8С. На основі теоретичного аналізу розроблено методику опрацювання кінетичних рівнянь, яка ґрунтується на використанні інтегрального методу. Для аналізу досліджуваних процесів запропоновано найбільш використовувані теоретичні моделі адсорбції. Розробле-но принципову технологічну схему процесу очищення стічних вод від барвників шляхом застосування природних дисперсних сорбентів. Здійснено розрахунок еколого-економічного ефекту, який досягається у випадку впровадження розробленої технології для очищення стоків фарбувально-обробних підприємств України. The dissertation is devoted to developing of the technology of wastewater cleanout from organic pigments by adsorption them on the natural dispersive sorbents: glauconite and palygorskit. The monitoring the pollution of surface waters of Ukraine with organic pig-ments according to the location of the enterprises which produce pigments and which use them in their technologies was carried out. Toxicological evaluation of the pigments, wastewater cleanout from which is being researched: active scarlet 4GT and anion red 8C, was carried out. The methods of working–out kinetic equations which is grounded on using of the in-tegral method was developed on the base of the theoretical models of adsorption were offered for analysis of the researched process. The principle technological scheme of the process of wastewater cleanout from pigments by applying natural dispersive sorbents was developed. The calcu-lation of ecologic and economic effect which could be reached in case of inculca-tion of the developed technology for cleanout of wastewaters of dyeing and man-ufacturing enterprises of Ukraine.
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Książki na temat "Glauconites"

1

Srivastava, R. A. K. 1949-, red. Glauconite, form and function. New Delhi: Today and Tomorrow's Printers & Publishers, 1986.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

K, Arkhipenko D., red. Problemy opredelenii͡a︡ realʹnoĭ struktury glaukonitov i rodstvennykh tonkodispersnykh fillosilikatov. Novosibirsk: VO "Nauka", 1993.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Ispolʹzovanie glaukonita v geokhronologii: Kaliĭ-argonovai͡a︡ sistema : metodicheskie rekomendat͡s︡ii. Novosibirsk: Akademii͡a︡ nauk SSSR, Sibirskoe otd-nie, In-t geologii i geofiziki, 1986.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Franus, Małgorzata. Zastosowanie glaukonitu do usuwania śladowych ilości metali ciężkich: Application of glauconite for removal of traces heavy metals. Lublin: Politechnika Lubelska, 2010.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Fedorovich, Cherkasov Ratmir, i Prikhodʹko V. S, red. Vysokobaricheskie kompleksy podvizhnykh poi͡asov. Moskva: "Nauka", 1988.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Srivastava, R. A. Glauconites: Form and Function (Current Trends in Geology Series, Vol 10). Scholarly Pubns, 1986.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Revitalizing Gilbertown oil field: Characterization of fractured chalk and glauconitic sandstone reservoirs in an extensional fault system. Tuscaloosa, Ala: Geological Survey of Alabama, 2000.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Iijima, A. Proceedings of the Twenty-Ninth International Geological Congress, Pt. C: Siliceous, Phosphatic & Glauconitic Sediments of the Tertiary & Mesozoic. Brill Academic Publishers, 1994.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.

Części książek na temat "Glauconites"

1

Zwingmann, Horst. "Clays and Glauconites (K–Ar/Ar–Ar)". W Encyclopedia of Scientific Dating Methods, 1–10. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-6326-5_37-1.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Zwingmann, Horst. "Clays and Glauconites (K–Ar/Ar–Ar)". W Encyclopedia of Scientific Dating Methods, 171–76. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-007-6304-3_37.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

El-Habaak, Galal, i Mahmoud Abdel-Hakeem. "Potential Exploitation of the Phanerozoic Glauconites in Egypt". W The Phanerozoic Geology and Natural Resources of Egypt, 565–80. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-95637-0_19.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Choudhury, Tathagata Roy, Santanu Banerjee i Sonal Khanolkar. "The Geochemical Affinity of Paleogene Glauconites in Paleo-Tethyan Deposits of India". W Geochemical Treasures and Petrogenetic Processes, 243–77. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4782-7_10.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Rothwell, R. G. "Glauconite". W Minerals and Mineraloids in Marine Sediments, 95–102. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1133-8_11.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Bansal, Udita, Santanu Banerjee i Dipima Borgohain. "Records of Marine Transgressions and Paleo-Depositional Conditions Imprinted Within Cretaceous Glauconites of India". W Mesozoic Stratigraphy of India, 443–67. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71370-6_16.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Yatsyshyn, M. M., V. M. Makogon, O. V. Reshetnyak i J. Błażejowski. "Structure and Thermal Stability of Silica–Glauconite / Polyaniline Composite". W Computational and Experimental Analysis of Functional Materials, 497–520. Toronto : Apple Academic Press, [2017]: Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315366357-14.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Lynn, Warren C., i Ronald D. Yeck. "Redefinition of the Glauconitic Family in Soil Taxonomy". W SSSA Special Publications, 125–33. Madison, WI, USA: Soil Science Society of America and American Society of Agronomy, 2015. http://dx.doi.org/10.2136/sssaspecpub16.c11.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Baioumy, Hassan M., Sabah N. Boulis i Mervat S. Hassan. "Occurrences and Petrographical Variations among the Glauconite Deposits from Egypt". W Proceedings of the 10th International Congress for Applied Mineralogy (ICAM), 39–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27682-8_6.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Guo, Song-wei, Ke-xin Zhang, Jun-chang Wu, Fang Xu, Zi-fei Fan i Zhi-wei Zhang. "Glauconite Sandstone Well Logging Interpretation Method for UT in Andes Oilfield". W Proceedings of the International Field Exploration and Development Conference 2021, 5174–84. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2149-0_473.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.

Streszczenia konferencji na temat "Glauconites"

1

Diaz, Elizabeth, Manika Prasad, Mario A. Gutierrez, Jack Dvorkin i Gary Mavko. "Elastic properties of Glauconite and Glauconitic sandstone reservoirs". W SEG Technical Program Expanded Abstracts 2001. Society of Exploration Geophysicists, 2001. http://dx.doi.org/10.1190/1.1816468.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Balgysheva, Beukut. "OBTAINING SORBENTS FROM GLAUCONITE AND GLAUCONITIC SAND OF KAZAKHSTAN". W 16th International Multidisciplinary Scientific GeoConference SGEM2016. Stef92 Technology, 2016. http://dx.doi.org/10.5593/sgem2016/b12/s04.145.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Westgate, Zack, Chris McMullin i Don DeGroot. "Glauconite Sand Challenges for US Offshore Wind Development". W ASME 2022 4th International Offshore Wind Technical Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iowtc2022-98666.

Pełny tekst źródła
Streszczenie:
Abstract Glauconite sand, otherwise known as ‘greensand’, is a challenging sediment type that can pose significant risks to foundation installation and performance. This is due to its tendency to transform from a stiff, high permeability coarse-grained material to a weak, low permeability fine-grained material due to particle crushing. Glauconite is an iron potassium mica, characteristically green and often found in peloidal form. It forms under reducing conditions within shallow marine depositional environments and has been found in coastal regions of the USA including locations along the Atlantic Continental Shelf associated with offshore wind farm developments. Due to its friable nature, glauconite affects the geotechnical properties of the sediments in which it forms. Geotechnical laboratory tests performed on glauconite sand samples reveal a wide range in particle size gradation and high specific gravity. Intact glauconite sand exhibits high strength, but under moderate disturbance it readily degrades into a clay-like material, increasing plasticity, reducing shear strength, and exhibiting strong thixotropic behavior. Given its tendency to crush, in situ testing with cone penetrometers produces high tip resistance and high sleeve friction, limiting the usefulness of standard soil classification charts. This paper presents an overview of the geological basis for glauconite sand formation, describes its depositional environment and maturation process, and presents results from recent tests performed on glauconite sands from the USA. Implications on pile installation and performance are discussed.
Style APA, Harvard, Vancouver, ISO itp.
4

Glaz, N. V., i A. K. Gorbunov. "Influence of glauconite on potato productivity under conditions of insufficient moisturization of the Southern Urals". W Agrobiotechnology-2021. Publishing house of RGAU - MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-11.

Pełny tekst źródła
Streszczenie:
Research 2019-2020 in the conditions of the forest-steppe zone of the Chelyabinsk region showed that the effect of glauconite on the yield and seed productivity of potatoes largely depends on the variety. The effect of glauconite (in doses from 10 to 40 t / ha) on the yield of tubers was proportional to the duration of the growing season of the varieties. The highest yield gains from glauconite were observed in the mid-ripening variety Tarasov – 4.05–4.62 t/ha, then in the medium-early variety Nevsky – 3.26–3.63 t/ha, and the smallest – were in the early variety Rosara – 1.95–2.26 t/ha. Whereas the effect of glauconite on the seed productivity of varieties had the opposite pattern: the greatest increase was observed in early-maturing varieties (Rozara – 1.30–1.56 times, Nevsky – 1.30–1.61 times), and the smallest – in the mid-season variety Tarasov (1.17–1.25 times).
Style APA, Harvard, Vancouver, ISO itp.
5

Щербакова, Наталья, Заур Хапцев, Андрей Захаревич, Сергей Вениг i Виктор Сержантов. "Biotechnological bases of use of natural mineral glauconite in soil-forming processes at development of technogenic massifs and liquidation of enterprises on extraction of minerals". W Mineralogical and technological appraisal of new types of mineral products. Petrozavodsk: Karelian Research Center of RAS, 2019. http://dx.doi.org/10.17076/tm13_9.

Pełny tekst źródła
Streszczenie:
To initiate the process of soil formation, it is necessary to introduce a culture of microorganisms capable of improving mineral nutrition, plant growth and resistance to adverse factors, regardless of the mineralogical composition of the surface. The advantage of the developed methods is the multifunctionality of the sorbent, which is an abiotic catalyst: the dangerous agent binds physically due to the formed fine-porous structure, and chemically due to the ion exchange processes occurring due to the nature of the layered glauconite silicate. The viability of immobilized glauconite bacterial cells of Agrobacterium radiobacter 204, Rhizobium leguminosarumbiovartrifolii, Flaviobacterium L 30 fulvum, Pseudomonas aureofaciens 1393 BS, amounted to no less than 4 months., while the original biological products are stored no more than 1 month. Key words: glauconite, sorbent, sorption capacity, heavy metals, microorganisms, immobilization on inorganic carriers.
Style APA, Harvard, Vancouver, ISO itp.
6

Zhang, Qin, Michael Nightingale i Benjamin Tutolo. "Experimental Determination of Glauconite Dissolution Kinetics". W Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.3119.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Malstrom, Nicole, i David E. Grandstaff. "X-RAY DIFFRACTION ANALYSIS OF GLAUCONITE INTER-LAYER THICKNESS: A NEW METHOD OF ASSESSING GLAUCONITE MATURITY". W 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-311177.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Collins, Collins, ML Blades, A. Redaa, C. Edgoose, G. Shields, G. Brock, C. Loyola i in. "In situ Rb–Sr dating and trace element analysis of glauconite-rich strata from the Arumbera Sandstone, Amadeus Basin". W Central Australian Basins Symposium IV. Petroleum Exploration Society of Australia (PESA), 2022. http://dx.doi.org/10.36404/sjyq6489.

Pełny tekst źródła
Streszczenie:
The Rb-Sr dating technique is among the most widely used geochronological tool available in earth and planetary sciences. The method is based on the radioactive decay of 87Rb to 87Sr via a negative beta decay (the emission of an electron), with a half-life of 49.61 ± 0.16 Ga1. Traditionally rubidium-strontium dating has required the separation and acid digestion of mineral phases and/or bulk rocks, thus preventing high-resolution and micro-scale geochronology applications. Here we present results of the novel in-situ (laser-based) rubidium-strontium dating of selected mineral phases (i.e., glauconite and K-feldspar) in glauconite-rich strata of the Arumbera Sandstone from the northeast part of the Amadeus Basin in central Australia.
Style APA, Harvard, Vancouver, ISO itp.
9

Chernova, Rimma, Tatiana Y. Rusanova, Ekaterina Selifonova, Galina Naumova, Victor Serzhantov i Sergey Venig. "Glauconite-based antibacterial composites with copper nanoparticles". W Saratov Fall Meeting 2020: Optical and Nano-Technologies for Biology and Medicine, redaktorzy Valery V. Tuchin i Elina A. Genina. SPIE, 2021. http://dx.doi.org/10.1117/12.2590697.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Selifonova, Ekaterina I., Galina Naumova, Alexey Selifonov, Victor Serzhantov, Sergey Venig i Tatiana Y. Rusanova. "Spectrophotometric study of chlorhexidine sorption by glauconite". W Optical Technologies for Biology and Medicine, redaktorzy Elina A. Genina i Valery V. Tuchin. SPIE, 2022. http://dx.doi.org/10.1117/12.2626776.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Możesz być także zainteresowany rozszerzonymi bibliografiami na temat „Glauconites” dla poszczególnych typów źródeł:
Artykuły w czasopismach Rozprawy doktorskie
Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!

Do bibliografii