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  • 1
    Unknown
    London : The Geological Society
    Keywords: Europa ; Kohlengeologie ; Kohlenlagerstätte ; Lagerstättenkunde ; Kohlenpetrologie ; Prospektion
    Description / Table of Contents: Exploration and Evaluation Techniques --- Stephen Flint, John Aitken, and Gary Hampson: Application of sequence stratigraphy to coal-bearing coastal plain successions: implications for the UK Coal Measures / Geological Society, London, Special Publications, 82:1-16, doi:10.1144/GSL.SP.1995.082.01.01 --- Iain M. Fulton, Paul D. Guion, and Neil S. Jones: Application of sedimentology to the development and extraction of deep-mined coal / Geological Society, London, Special Publications, 82:17-43, doi:10.1144/GSL.SP.1995.082.01.02 --- Paul D. Guion, Iain M. Fulton, and Neil S. Jones: Sedimentary facies of the coal-bearing Westphalian A and B north of the Wales-Brabant High / Geological Society, London, Special Publications, 82:45-78, doi:10.1144/GSL.SP.1995.082.01.03 --- Gary Hampson: Discrimination of regionally extensive coals in the Upper Carboniferous of the Pennine Basin, UK using high resolution sequence stratigraphic concepts / Geological Society, London, Special Publications, 82:79-97, doi:10.1144/GSL.SP.1995.082.01.04 --- Ian H. Harris: Newly developed techniques to determine proportions of undersized (friable) coal during prospective site investigations / Geological Society, London, Special Publications, 82:99-114, doi:10.1144/GSL.SP.1995.082.01.05 --- Neil S. Jones, Paul D. Guion, and Iain M. Fulton: Sedimentology and its applications within the UK opencast coal mining industry / Geological Society, London, Special Publications, 82:115-135, doi:10.1144/GSL.SP.1995.082.01.06 --- D. A. Spears and P. C. Lyons: An update on British Tonsteins / Geological Society, London, Special Publications, 82:137-146, doi:10.1144/GSL.SP.1995.082.01.07 --- X. Querol and S. Chenery: Determination of trace element affinities in coal by laser ablation microprobe-inductively coupled plasma mass spectrometry / Geological Society, London, Special Publications, 82:147-155, doi:10.1144/GSL.SP.1995.082.01.08 --- Geophysical Exploration --- N. R. Goulty: Review of borehole seismic methods developed for opencast coal exploration / Geological Society, London, Special Publications, 82:159-167, doi:10.1144/GSL.SP.1995.082.01.09 --- Resources, Environment and Energy Policies --- C. Koukouzas and N. Koukouzas: Coals of Greece: distribution, quality and reserves / Geological Society, London, Special Publications, 82:171-180, doi:10.1144/GSL.SP.1995.082.01.10 --- John Merefield, Ian Stone, Philip Jarman, Geraint Rees, Jo Roberts, Jeff Jones, and Andrew Dean: Environmental dust analysis in opencast mining areas / Geological Society, London, Special Publications, 82:181-188, doi:10.1144/GSL.SP.1995.082.01.11 --- Jiří Pešek and Jarmila Pešková: Coal production and coal reserves of the Czech Republic and former Czechoslovakia / Geological Society, London, Special Publications, 82:189-194, doi:10.1144/GSL.SP.1995.082.01.12 --- Philip Wright: European Community energy policy: import dependency and the ineffectual consensus / Geological Society, London, Special Publications, 82:195-203, doi:10.1144/GSL.SP.1995.082.01.13 --- Case Histories --- M. J. Allen: Exploration and exploitation of the East Pennine Coalfield / Geological Society, London, Special Publications, 82:207-214, doi:10.1144/GSL.SP.1995.082.01.14 --- Roland Dreesen, Dominique Bossiroy, Michiel Dusar, Romeo M. Flores, and Paul Verkaeren: Overview of the influence of syn-sedimentary tectonics and palaeo-fluvial systems on coal seam and sand body characteristics in the Westphalian C strata, Campine Basin, Belgium / Geological Society, London, Special Publications, 82:215-232, doi:10.1144/GSL.SP.1995.082.01.15 --- Rod Gayer, Tanya Hathaway, and John Davis: Structural geological factors in open pit coal mine design, with special reference to thrusting: case study from the Ffyndaff sites in the South Wales Coalfield / Geological Society, London, Special Publications, 82:233-249, doi:10.1144/GSL.SP.1995.082.01.16 --- H. E. Baily, B. W. Glover, S. Holloway, and S. R. Young: Controls of coalbed methane prospectivity in Great Britain / Geological Society, London, Special Publications, 82:251-265, doi:10.1144/GSL.SP.1995.082.01.17 --- Stanislav Opluštil and Petr Vízdal: Pre-sedimentary palaeo-relief and compaction: controls on peat deposition and clastic sedimentation in the Radnice Member, Kladno Basin, Bohemia / Geological Society, London, Special Publications, 82:267-283, doi:10.1144/GSL.SP.1995.082.01.18 --- W. A. Read: Sequence stratigraphy and lithofacies geometry in an early Namurian coal-bearing succession in central Scotland / Geological Society, London, Special Publications, 82:285-297, doi:10.1144/GSL.SP.1995.082.01.19 --- Otto Tomschey: Unusual enrichment of U, Mo and V in an Upper Cretaceous coal seam, Hungary / Geological Society, London, Special Publications, 82:299-305, doi:10.1144/GSL.SP.1995.082.01.20 --- M. K. G. Whateley and E. Tuncali: Origin and distribution of sulphur in the Neogene Beypazari Lignite Basin, Central Anatolia, Turkey / Geological Society, London, Special Publications, 82:307-323, doi:10.1144/GSL.SP.1995.082.01.21
    Pages: Online-Ressource (VII, 331 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799195
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 209 (1966), S. 177-181 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN sedimentary rocks the presence of fossil species of groups of life now characteristic of exclusively marine environments, such as brachiopods, cephalopods and certain families of lamellibranchs, indicate past marine conditions. Furthermore we have good reason, at least by Carboniferous times, to ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 28 (1981), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Namurian black shales studied have a good palaeontological control. Pyrite, illite and organic matter are higher in the marine shales, and siderite and kaolinite are higher in the non-marine shales. The distribution of the diagenetic iron minerals is attributed to anionic activities controlled by salinity. The same control could account for the observed clay-mineral distribution by differential flocculation. The major element geochemistry closely reflects the above mineral variation. Mn and Zr are higher in the non-marine shales due to siderite and zircon respectively. Co, Cr, Rb, Y and Ba are not significantly different and a detrital source, mainly clay minerals, is suggested. In the marine shales the elements Pb, Cu, V, Ni, Sr and Zn are significantly higher. Using a discriminant function analysis the palaeosalinity groups are separated and the contribution of each element to the separation is calculated. The present element locations are thought, from correlation analysis, to be pyrite and organic matter. By analogy with experimental work and modern environments, the element enrichment is mainly attributed to reactions involving organic matter and oxyhydroxide material in environments in which salinity and slow rates of sedimentation were important factors. The element enrichment cannot be related directly to seawater concentrations, unlike some black shales, and the accumulation rates for Pb and Cu are thought to be unusually high.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 9 (1967), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A combined petrographical and geochemical study has been made on a per- sistent carbonate horizon from the Mansfield Marine Band, an important marker horizon in the Westphalian Coal Measures of the east Pennines. The composition of this carbonate is unusual for it normally consists of ankerite, but in some localities the carbonate is siderite and not ankerite. The position of the carbonate in the sedimentary cycle is discussed and the conclusion drawn that physicochemical conditions were suitable for the precipitation of CaC03 to occur. Furthermore the detrital material in the carbonate band continued to accumulate at a similar rate to the shales above and below the carbonate. The alteration of the CaC03 is thought to have been a diagenetic effect and the result of a change in the physicochemical environment. Variations in the concentration of dissolved sulphur species and their effect on the solubilities of iron and manganese provide an adequate mechanism to explain how CaC03 may alter to siderite on the one hand or ankerite on the other.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 26 (1979), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The volcanic origin of a number of major tonstein horizons has been established from mineralogical compositions and from trace elements that are quantitatively retained during diagenesis. Discriminant function analysis using the variables Ti/Al, Cr/Al, Zr/Al and Ni/Al allows the tonsteins to be classified according to original composition. Two main groups are recognized amongst the British tonsteins. Those formed from acid volcanic ash are comparable in composition with French and German tonsteins and a common source is postulated, whereas tonsteins formed from basic volcanic ash contain variable amounts of detrital sediment and are thought to originate from local eruptions. Possible lateral equivalents between tonstein horizons in Britain and elsewhere in Europe are suggested.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 20 (1973), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Previous work on the mineralogy of the volcanic supra-Wyrley Yard tonstein is extended to include the opaque minerals. This has led to a better understanding of the major and trace element geochemistry of the tonstein. The complete mineral assemblage is kaolinite (dominant) with minor quartz, K-mica, zircon, apatite, pyrite, sphalerite, galena, rutile, dolomite, barytes, goethite and organic matter.Information on element location in the tonstein has been obtained by using autoradiography and fission track radiography, the electron probe and by analysing separated fractions with an optical spectrograph.This has enabled the diagenetic history of individual elements to be determined, and the composition of the tonstein to be compared with igneous material. The high concentration of Th, U, Pb, Sn, Bi, Y, Be and B in the tonstein, and the low concentration of Ti, Cr, V, Ni, Cu and Co is indicative of an acidic ash. A source in the Armorican orogenic belt is postulated, based on the contrast with the basaltic Carboniferous volcanism and also the high concentrations of Sn, Pb and Zn.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 23 (1976), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Laminations control the fissility of a sequence of shales and mudstones from the Upper Carboniferous Coal Measures in Britain. This was established by measuring the thickness of pairs of laminations in unweathered borehole material and comparing with the thickness of shale fragments at the outcrop of the same sequence. The parallel orientation of the clay minerals is not responsible for the fissility and it could be that its importance has been overestimated. The processes responsible for the formation and preservation of the laminations will also produce a well orientated clay fabric and hence fissility and clay orientation may be indirectly related.
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  • 8
    facet.materialart.
    Unknown
    In:  Geological Society Special Publication 236: 619-639.
    Publication Date: 2007-10-08
    Description: The combustion of coal around the world for power generation produces huge volumes of fly ash. In Europe alone this amounted to about 40 Mt in 2000 of which less than 50% was utilized. The waste ends in lagoons, ash mounds, and landfill sites. Coal ashes have high concentrations of many trace elements, some of which are of environmental concern. Although the origin of elements in coals is not considered in this chapter, other aspects of the geochemistry are, and in particular the location of elements within the coal as this influences the behaviour of elements during combustion. During combustion many elements are volatile and are concentrated on the surfaces of the ash particles. Analyses of input coal and combustion residues from Eggborough power station (UK) demonstrate retention of the majority of elements in the solid combustion products, and analyses of size-fractionated fly ash have enabled the percentage surface association to be calculated, which for elements such as As and Mo is considerable. A consideration of the general leaching behaviour leads to the conclusion that it is the surface-associated elements that are most susceptible to leaching in the aqeous environment. The pH is an important control on trace element mobility in water, and in leachates from fly ash ranges from 3.3 to 12.3. High-sulphur coals generate acidic leachates, but not exclusively as the laboratory and field data demonstrate in case studies on UK coals. Batch and column leaching tests on fly ashes are reviewed and data presented for fresh fly ash and weathered fly ashes from two UK mounds dating back 17 and 40 years. The weathered ashes do have lower leachate concentrations than the fresh ash, but in spite of their ages they would not be considered to be inert. The batch leaching tests are of value in simulating high liquid-to-solid ratios encountered in ash lagoons, whereas the column leaching tests relate more closely to ash mounds. Finally, the results of field studies are reviewed and data presented for samples from boreholes in the two ash mounds. Analyses of the ash and extracted porewaters demonstrate depth-related changes due to reaction of the ash with the infiltrating water and whether or not equilibrium was established. Calculations demonstrate that the porewaters achieve saturation with respect to gypsum at depth in the boreholes. Infiltration over the years has led to detectable changes in the concentrations of some of the major elements in the bulk ash, such as Ca, and this enables realistic infiltration rates to be calculated. However, there are not comparable changes in the concentrations of the trace elements in the ash because the rate at which elements are being removed in solution is not sufficiently great.
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  • 9
    Publication Date: 1966-01-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 10
    Publication Date: 1983-06-01
    Description: Borehole samples from the Wildmoor Sandstone Formation have been analysed for whole-rock major and trace elements and the mineralogy determined by X-ray diffraction and conventional thin sections. The forty-two samples studied were obtained from boreholes drilled in a long established effluent site and from control boreholes away from the site. Elements are associated with one or more of calcite, quartz, K-feldspar, and clay plus oxide. The most important mineralogical change due to current infiltration is progressive loss of calcite. Background element concentrations are established and only Pb, and in one sample Cu and Zn, are found in higher concentrations representing anthropogenic additions to the system.
    Print ISSN: 0026-461X
    Electronic ISSN: 1471-8022
    Topics: Geosciences
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