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2013

125 record(s)
 
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    Data from the British Geological Survey's GeoIndex Offshore (cultural data) theme are made available for viewing here. GeoIndex is a website that allows users to search for information about BGS data collections covering the UK and other areas world wide. Access is free, the interface is easy to use, and it has been developed to enable users to check coverage of different types of data and find out some background information about the data. More detailed information can be obtained by further enquiry via the web site: www.bgs.ac.uk/geoindex.

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    Data from the British Geological Survey's GeoIndex Offshore theme are made available for viewing here. GeoIndex is a website that allows users to search for information about BGS data collections covering the UK and other areas world wide. Access is free, the interface is easy to use, and it has been developed to enable users to check coverage of different types of data and find out some background information about the data. More detailed information can be obtained by further enquiry via the web site: www.bgs.ac.uk/geoindex.

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    BGS offshore marine products are made available to view via this web map service. The 1:250 000 scale offshore geological maps in the UTM series (Universal Transverse Mercator projection) are available digitally as two themes: bedrock geology (DigRock250) and sea-bed sediments (DigSBS250). Marine Hard Substrate Dataset (DiGHardSubstrate250k) is also made available via this service.

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    The BGS Offshore Bedrock 250k dataset is vector data which reflects the offshore bedrock geological of the UK and some of its adjacent waters at 1:250,000 scale. This comprehensive product provides a digital compilation of the paper maps published by BGS at the same scale, as well as, additional re-interpretations from regional geological studies. The composition, age and deformational history of the rocks underlying the seabed (bedrock) are important for a range of stakeholders, including marine spatial planners and offshore developers. The dataset is arranged in two GIS layers: Bedrock Lithostratigraphy and Bedrock Structural Geology. The polygons within the Bedrock Lithostratigraphy layer show the spatial distribution of the principal lithostratigraphical units (formations and groups). The lines within the Structural Geology layer show the location and extent of known structural features such as faults and folds. This broadscale dataset was derived from geophysical data (e.g. airgun, boomer, sparker, sidescan sonar, magnetometer, gravity meter) and data obtained from commercial wells and BGS shallow boreholes. The variations in data density will be reflected in the detail of the mapping.

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    Linear features (shown as polylines) represent six classes of geological structural features e.g. faults, folds or landforms e.g. buried channels, glacial drainage channels at the ground or bedrock surface (beneath superficial deposits). Linear features are associated most closely with the bedrock theme either as an intrinsic part of it for example marine bands or affecting it in the case of faults. However landform elements are associated with both bedrock and superficial deposits. The linear features are organised into seven main categories: Alteration area indicating zones of change to the pre-existing rocks due to the application of heat and pressure that can occur round structural features such as faults and dykes. Fault where a body of bedrock has been fractured and displaced by a large scale process affecting the earth's crust. Fold where strata are bent or deformed resulting from changes or movement of the earth's surface creating heat and pressure to reshape and transform the original horizontal strata. Folds appear on all scales, in all rock types and from a variety of causes. Fossil horizons where prolific fossil assemblages occur and can be used to help establish the order in which deposits were laid down (stratigraphy). These horizons allow correlation where sediments of the same age look completely different due to variations in depositional environment. Mineral vein where concentrations of crystallised mineral occur within a rock, they are closely associated with faulting, but may occur independently. Landforms define the landscape by its surface form; these include glacial features such as drumlins, eskers and ice margins. Rock identifies key (marker) beds, recognised as showing distinct physical characteristics or fossil content. Examples include coal seams, gypsum beds and marine bands. The data are available in vector format (containing the geometry of each feature linked to a database record describing their attributes) as ESRI shapefiles and are available under BGS data licence.

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    This dataset contains 10 three dimensional x-ray tomographic images of CO2-acidified brine reacting with Ketton limestone at a voxel size of 3.8 microns. It includes the unreconstructed projections (.txrm), the reconstructed images (.txm), and the masked and cropped segmented images (.am and .raw). The rock was imaged during dissolution 10 times over the course of 2.5 hours. Details can be found in Menke et al., 2015 in the journal Environmental Science and Technology.

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    This poster on the UKCCSRC Call 1 project CO2 storage in Palaeogene and Neogene hydrogeological systems of the North Sea: preparation of an IODP scientific drilling bid was presented at the CSLF Call project poster reception, London, 27.06.16. Grant number: UKCCSRC-C1-30. The North Sea Basin (NSB) is considered to be suitable for commercial-scale CO2 storage, due to its favourable geological setting, its proximity to sources, and pioneering operational experience storing CO2 at the Sleipner injection site. The shallow Neogene and Quaternary sediments of the NSB form the overburden and seal to these underlying CO2 reservoirs but are under-researched, even though the NSB is a mature petroleum system, penetrated by many thousands of wells. Quaternary sediments, up to 1000 metres thick, are in general bypassed to reach the deeper, profitable hydrocarbon resources. UKCCSRC and CLIMIT programme funded scientific, governmental and industrial partners from the UK and Norway to collaborate with the purpose of submitting a proposal to the International Ocean Discovery Program (IODP) for scientific drilling to investigate the overburden to CO2 storage strata.

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    This poster on the UKCCSRC Call 1 project Tractable equations of state for CO2 mixtures in CCS was presented at the CSLF Call project poster reception, London, 27.06.16. Grant number: UKCCSRC-C1-22. A potential bottle-neck for CCS is the transport of CO2 from power plants to the storage location, by pipeline. Key to safe and inexpensive transport is a detailed understanding of the physical properties of carbon dioxide. However, no gas separation process is 100% efficient, and the resulting carbon dioxide contains a number of different impurities. These impurities can greatly influence the physical properties of the fluid compared to pure CO2. They have important design, safety and cost implications for the compression and transport of carbon dioxide. This project aimed to develop new methods to produce custom models (equations of state) for impure CO2 behaviour for CCS.

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    These data show images recorded using a variety of methods of a model system of bacterial metal reduction. In all cases the bacteria grew from a pure culture of Geobacter sulfurreducens, and grew undisturbed on thin films of amorphous Fe oxyhydroxide – ferrihydrite. The different imaging methodologies have highlighted different features of this interaction. AFM shows the surface texture of the bacteria and ferrihydrite films; epifluorescence was used to allow counting of the cells at different time points from 0 to 12 days post inoculation (cell counts available in excel spreadsheet); and confocal imaging allow visualisation of the redox patterns surrounding cells and to identify areas of bioreduced Fe(II) (quantification of Fe(II) available in excel spreadsheet). The following data is included: 1. 9 x AFM images of Geobacter sulfurreducens bacteria growing on ferrihydrite films 2. 5 x epifluorescence images of Geobacter sulfurreducens bacteria growing on ferrihydrite films over time 3. spreadsheet bacterial counts associated with epifluorescence images 4. 7 x confocal images of Geobacter sulfurreducens bacteria growing on ferrihydrite films with redox green staining of appendages 5. 5 x example confocal images of Geobacter sulfurreducens bacteria growing on ferrihydrite films with Fe(II) highlighted by RhoNox-1 6. Spreadsheet of quanitfication of RhoNox intensity against bacteria and Fe co-location Data is presented which shows the formation of precious metal nanoparticles on the surface of geobacter sulfurreducens cells. The images were produced by CryoTEM. Full details of the experiment are available in this publication http://onlinelibrary.wiley.com/doi/10.1002/ppsc.201600073/full 7. Powerpoint presentation of TEM images of precious metal nanoparticles formed on the surface of Geobacter cells

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    This poster on the UKCCSRC Call 1 project, Chemical Looping for low-cost Oxygen Production, was presented at the Sheffield Biannual, 08.04.13. Grant number: UKCCSRC-C1-39.