Recursos de colección

Enlighten (146.418 recursos)

Enlighten is the University of Glasgow's institutional repository service for published research material including peer-reviewed journal articles, published conference papers,books and book chapters

Subject = Q Science: QE Geology

Mostrando recursos 1 - 20 de 22

  1. Shale Gas Impacts on Groundwater Resources: Understanding the Behavior of a Shallow Aquifer Around a Fracking Site in Poland

    Montcoudiol, Nelly; Isherwood, Catherine; Gunning, Andrew; Kelly, Thomas; Younger, Paul L.
    Exploitation of shale gas by hydraulic fracturing (fracking) is highly controversial and concerns have been raised regarding induced risks from this technique. As part of the EU-funded SHEER Project, a shallow aquifer used for drinking water, overlying a zone of active shale-gas fracking, has been monitored for more than a year. Early results reveal the functioning of the shallow aquifer and hydrochemistry, focusing on the identification of potential impacts from the shale gas operation. This stage is an essential precursor to modeling impact scenarios of contamination and to predict changes in the aquifer.

  2. Shale Gas Impacts on Groundwater Resources: Understanding the Behavior of a Shallow Aquifer Around a Fracking Site in Poland

    Montcoudiol, Nelly; Isherwood, Catherine; Gunning, Andrew; Kelly, Thomas; Younger, Paul L.
    Exploitation of shale gas by hydraulic fracturing (fracking) is highly controversial and concerns have been raised regarding induced risks from this technique. As part of the EU-funded SHEER Project, a shallow aquifer used for drinking water, overlying a zone of active shale-gas fracking, has been monitored for more than a year. Early results reveal the functioning of the shallow aquifer and hydrochemistry, focusing on the identification of potential impacts from the shale gas operation. This stage is an essential precursor to modeling impact scenarios of contamination and to predict changes in the aquifer.

  3. Fingerprinting coal-derived gases from the UK

    Györe, Domokos; McKavney, Rory; Gilfillan, Stuart M.V.; Stuart, Finlay M.
    The large-scale extraction of unconventional hydrocarbons in the United States has led to fears of methane contamination of shallow groundwaters. Differentiating between the deep gas released during extraction (shale gas, coal bed methane and underground coal gasification) and natural shallow-sourced methane is imperative for the monitoring and managing of environmental risks related to the extraction process. Here, for the first time, we present measurements of the major gas, and stable and noble gas isotope composition of coal bed methane (CBM) from central Scotland and coal mine methane (CMM) from central England, UK. The molecular (C1/(C2+C3) = 21 to 120) and...

  4. Graphical statistics to explore the natural and anthropogenic processes influencing the inorganic quality of drinking water, ground water and surface water

    Flem, Belinda; Reimann, Clemens; Fabian, Karl; Birke, Manfred; Filzmoser, Peter; Banks, David
    Plots of cumulative distribution functions (CDF) are a simple but powerful exploratory data analysis (EDA) tool to evaluate and compare statistical data distributions. Here, empirical CDF plots are used to compare results of four large (476 to 884 samples) national- to continental-scale inorganic water chemistry data sets: (1) European surface water, (2) European tap water, (3) European bottled waters as a proxy for groundwater and (4) Norwegian crystalline bedrock rock groundwater, all analysed at the same laboratory, albeit at different times. For many parameters (e.g., Ba, Cl-, K, SO4 2-) median values and ranges are, given the differing origins and, in...

  5. Graphical statistics to explore the natural and anthropogenic processes influencing the inorganic quality of drinking water, ground water and surface water

    Flem, Belinda; Reimann, Clemens; Fabian, Karl; Birke, Manfred; Filzmoser, Peter; Banks, David
    Plots of cumulative distribution functions (CDF) are a simple but powerful exploratory data analysis (EDA) tool to evaluate and compare statistical data distributions. Here, empirical CDF plots are used to compare results of four large (476 to 884 samples) national- to continental-scale inorganic water chemistry data sets: (1) European surface water, (2) European tap water, (3) European bottled waters as a proxy for groundwater and (4) Norwegian crystalline bedrock rock groundwater, all analysed at the same laboratory, albeit at different times. For many parameters (e.g., Ba, Cl-, K, SO4 2-) median values and ranges are, given the differing origins and, in...

  6. The inherent tracer fingerprint of captured CO2

    Flude, Stephanie; Gyore, Domokos; Stuart, Finlay; Zurakowska, Marta; Boyce, Adrian; Haszeldine, Stuart; Chalaturnyk, Rick; Gilfillan, Stuart
    Carbon capture and storage (CCS) is the only currently available technology that can directly reduce anthropogenic CO2 emissions arising from fossil fuel combustion. Monitoring and verification of CO2 stored in geological reservoirs will be a regulatory requirement and so the development of reliable monitoring techniques is essential. The isotopic and trace gas composition - the inherent fingerprint - of captured CO2 streams is a potentially powerful, low cost geochemical technique for tracking the fate of injected gas in CCS projects; carbon and oxygen isotopes, in particular, have been used as geochemical tracers in a number of pilot CO2 storage sites,...

  7. Fingerprinting the Temperature and Fluid Source of Fracture-Filling Calcite in Geothermal Systems Using Clumped Isotopes

    MacDonald, John; Milicich, Sarah; Davies, Amelia; Holdsworth, Chris; Newton, Michael; Williamson, Sam; Faithfull, John; McNamara, David; John, Cedric
    No abstract available.

  8. Formation of Exceptional Secondary Mineralisation in SW Scotland During the Onset of Northern Hemisphere Glaciation Revealed by (U+Th)/21Ne Dating

    Stuart, Finlay; Faithfull, John
    No abstract available.

  9. Numerical modelling in support of a conceptual model for groundwater flow and geochemical evolution in the southern Outaouais Region, Quebec, Canada

    Montcoudiol, Nelly; Molson, John; Lemieux, Jean-Michel
    A two-dimensional vertical-section numerical model for groundwater flow and transport using age, tritium and chloride was used to help validate a conceptual model of geochemical evolution within a representative regional-scale hydrogeological system in the Outaouais Region, Quebec, Canada. The flow system includes up to 30 m of Quaternary sediments and marine clays overlying fractured silicate rock of the Canadian Shield. Calibration of the regional flow model using observed piezometric levels and tritium concentrations showed that shallow groundwater flow is dominated by local flow systems limited to 30–40 m depth, 1–5 km long, and with groundwater residence times of 10–50 years....

  10. Selection for novel, acid-tolerant Desulfovibrio spp. from a closed Transbaikal mine site in a temporal pH- gradient bioreactor

    Antsiferov, Dimtry V.; Fyodorova, Tatiana S.; Kovalyova, Anastasia A.; Lukina, Anastasia; Frank, Yulia A.; Avakyan, Marat R.; Banks, David; Tuovinen, Olli H.; Karnachuk, Olga V.
    Almost all the known isolates of acidophilic or acid-tolerant sulphate-reducing bacteria (SRB) belong to the spore-forming genus Desulfosporosinus in the Firmicutes. The objective of this study was to isolate acidophilic/acid-tolerant members of the genus Desulfovibrio belonging to deltaproteobacterial SRB. The sample material originated from microbial mat biomass submerged in mine water and was enriched for sulphate reducers by cultivation in anaerobic medium with lactate as an electron donor. A stirred tank bioreactor with the same medium composition was inoculated with the sulphidogenic enrichment. The bioreactor was operated with a temporal pH gradient, changing daily, from an initial pH of 7.3 to...

  11. Selection for novel, acid-tolerant Desulfovibrio spp. from a closed Transbaikal mine site in a temporal pH- gradient bioreactor

    Antsiferov, Dimtry V.; Fyodorova, Tatiana S.; Kovalyova, Anastasia A.; Lukina, Anastasia; Frank, Yulia A.; Avakyan, Marat R.; Banks, David; Tuovinen, Olli H.; Karnachuk, Olga V.
    Almost all the known isolates of acidophilic or acid-tolerant sulphate-reducing bacteria (SRB) belong to the spore-forming genus Desulfosporosinus in the Firmicutes. The objective of this study was to isolate acidophilic/acid-tolerant members of the genus Desulfovibrio belonging to deltaproteobacterial SRB. The sample material originated from microbial mat biomass submerged in mine water and was enriched for sulphate reducers by cultivation in anaerobic medium with lactate as an electron donor. A stirred tank bioreactor with the same medium composition was inoculated with the sulphidogenic enrichment. The bioreactor was operated with a temporal pH gradient, changing daily, from an initial pH of 7.3 to...

  12. Selection for novel, acid-tolerant Desulfovibrio spp. from a closed Transbaikal mine site in a temporal pH- gradient bioreactor

    Antsiferov, Dimtry V.; Fyodorova, Tatiana S.; Kovalyova, Anastasia A.; Lukina, Anastasia; Frank, Yulia A.; Avakyan, Marat R.; Banks, David; Tuovinen, Olli H.; Karnachuk, Olga V.
    Almost all the known isolates of acidophilic or acid-tolerant sulphate-reducing bacteria (SRB) belong to the spore-forming genus Desulfosporosinus in the Firmicutes. The objective of this study was to isolate acidophilic/acid-tolerant members of the genus Desulfovibrio belonging to deltaproteobacterial SRB. The sample material originated from microbial mat biomass submerged in mine water and was enriched for sulphate reducers by cultivation in anaerobic medium with lactate as an electron donor. A stirred tank bioreactor with the same medium composition was inoculated with the sulphidogenic enrichment. The bioreactor was operated with a temporal pH gradient, changing daily, from an initial pH of 7.3 to...

  13. Dykes as physical buffers to metamorphic overprinting: an example from the Archaean–Palaeoproterozoic Lewisian Gneiss Complex of NW Scotland

    MacDonald, J.M.; Magee, C.; Goodenough, K.M.
    The early history of polymetamorphic basement gneiss complexes is often difficult to decipher due to overprinting by later deformation and metamorphic events. In this paper we integrate field, petrographic and mineral chemistry data from an Archaean tonalitic gneiss xenolith, hosted within a Palaeoproterozoic mafic dyke in the Lewisian Gneiss Complex of NW Scotland to show how xenoliths in dykes may preserve signatures of early tectonothermal events. The Archaean tonalite– trondhjemite–granodiorite (TTG) gneisses of the Lewisian Gneiss Complex are cut by a suite of Palaeoproterozoic (c. 2400 Ma) mafic dykes, the Scourie Dyke Swarm, and both are deformed by later shear zones developed during the upper greenschist-...

  14. Evaluation of analytical models for heat transfer in mine tunnels

    Loredo, Covadonga; Banks, David; Roqueñí, Nieves
    The heat contained in underground flooded mine workings is actively exploited, often via heat pump technology, at a number of locations in Europe and North America. Several different heat exchange configurations may be utilised in this context, but for those (“standing column” and “open loop” arrangements) where mine water reinjection is practised, the rate of heat transfer between mine walls and mine water is a critical process to quantify. The two most commonly-used analytical solutions to this problem have been applied to the same baseline scenario, exploring and comparing their sensitivity, strengths, weaknesses and areas of application. It is found...

  15. Mesozoic-Cenozoic mafic magmatism in Sanandaj-Sirjan Zone, Zagros Orogen (Western Iran): geochemical and isotopic inferences from Middle Jurassic and Late Eocene gabbros

    Deevsalar, Reza; Shinjo, Ryuichi; Ghaderi, Majid; Murata, Mamoru; Hoskin, P.W.O.; Oshiro, Shoma; Wang, Kuo-Lung; Lee, Hao Yang; Neill, Iain
    One of the consequences of Neo-Tethys ocean subduction beneath the Central Iranian Micro-continent (CIMC) is the development of rare gabbroic intrusions in the Malayer-Boroujerd Plutonic Complex (MBPC) located in the Sanandaj-Sirjan Zone (SaSZ) of the Zagros Orogenic belt. The MBPC is a suite of extensive felsic and lesser mafic magmatic products in the northern SaSZ with geochemical signatures of arc-like magmatism during the Middle Jurassic (Ghorveh-Aligudarz arc) and intraplate type in the Late Eocene. Middle Jurassic gabbros (non-cumulate and cumulate) have low-Ti concentrations (< 1 wt. %) and quite uniform isotopic compositions (initial 87Sr/86Sr: 0.7035‒0.70593 and εNd(t): - 6.18‒-0.7), enriched LILE...

  16. Water from abandoned mines as a heat source: practical experiences of open- and closed-loop strategies, United Kingdom

    Banks, David; Athresh, Anup; Al-Habaibeh, Amin; Burnside, Neil
    Pilot heat pump systems have been installed at two former collieries in Yorkshire/Derbyshire, England, to extract heat from mine water. The installations represent three fundamental configurations of heat exchanger. At Caphouse Colliery, mine water is pumped through a heat exchanger coupled to a heat pump and then discharged to waste (an open-loop heat exchange system). The system performs with high thermal efficiency, but the drawbacks are: (1) it can only be operated when mine water is being actively pumped from the colliery shaft for the purposes of regional water-level management, and (2) the fact that the water is partially oxygenated...

  17. Paradoxical co-existing base metal sulphides in the mantle: the multi-event record preserved in Loch Roag peridotite xenoliths, North Atlantic Craton

    Hughes, Hannah S.R.; McDonald, Iain; Loocke, Matthew; Butler, Ian B.; Upton, Brian G.J.; Faithfull, John W.
    The role of the subcontinental lithospheric mantle as a source of precious metals for mafic magmas is contentious and, given the chalcophile (and siderophile) character of metals such as the platinum-group elements (PGE), Se, Te, Re, Cu and Au, the mobility of these metals is intimately linked with that of sulphur. Hence the nature of the host phase(s), and their age and stability in the subcontinental lithospheric mantle may be of critical importance. We investigate the sulphide mineralogy and sulphide in situ trace element compositions in base metal sulphides (BMS) in a suite of spinel lherzolite mantle xenoliths from northwest...

  18. New Bathonian (Middle Jurassic) sauropod remains from the Valtos Formation, Isle of Skye, Scotland

    Clark, Neil D.L.; Gavin, Patrick
    The discovery of a sauropod tooth and a single sauropod footprint from the Valtos Formation supplements our knowledge of these dinosaurs from the Middle Jurassic of the Isle of Skye. Although the family cannot be determined from this single tooth, it is thought that it represents a primitive eusauropod and may belong to a similar sauropod to that previously described from limited isolated osteological evidence (caudal vertebra, damaged humerus and a rib). The characteristics that suggest this affinity include evidence of denticles on one edge of the tooth, wrinkling and granulation of the enamel, wear suggesting crown-to-crown occlusion, and the...

  19. Scottish Gold: Fruit of the Nation

    Clark, Neil D.L.
    Atoms of gold are found in almost everything on Earth. It is often concentrated by hot fluids percolating through the crust and re-depositing it in veins produced during tectonic collisions or the rifting apart of oceans and continents. It can be further concentrated into rivers and streams by weathering and erosion of ancient landforms where it has been collected for millennia by humans for many purposes.

    Gold rushes of the 19th century in the United States, Australia and South Africa are well known of, but there were two gold rushes in Scotland as well: one in 1852 and the other in...

  20. Gemstone prospectivity in Scotland

    Smith, C.G.; Faithfull, J.; Jackson, B.
    Scotland has never been considered a significant source of quality gemstones; nevertheless it is capable of producing a wide range of gem materials including agate, amethyst, cairngorm and garnet. Occurrences of more valuable stones such as topaz, beryl, sapphire, and tourmaline are far rarer, but the first two species along with cairngorm formed the basis of a thriving 18th and 19th century cottage industry in the eastern Cairngorms. The discovery in 1984 of 1-8 cm long gem-quality sapphire megacrysts on the Isle of Lewis was the first step in the realisation that the Scottish Highlands had commercial gemstone potential, particularly since one crystal generated a...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.