cl_maintenanceAndUpdateFrequency

irregular

106 record(s)
 
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    Paper records and photos used to create the Nottingham Caves digital register and maps. Includes archival material of the caves known to BGS, around northern and central Nottingham. Data mainly captured in 1989, infrequent since then approximately 1 per year.

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    GIS Data Layer and Database including maps and detailed Indexes. Paper records and photographs, descriptive register is paper version from which the digital version was created. Data mainly captured in 1989, infrequent additions (approximately 1 entry per year) since then. Includes all man-made caves known to BGS in Nottingham, but there are many more to be located in the future.

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    Descriptive register with detailed indexes of the Nottingham man-made caves. Data mainly captured 1989, infrequent additions (approximately 1 per year) since then

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    The M2M Thematic Programme funded 17 scientific investigation projects leading to more unified physical understanding of fluid flow distributions in heterogeneous rock. The programme focused on developing an understanding of the relationships between measured and modelled subsurface fluid flows spanning the range of spatial and temporal scales relevant to fluid resource management. The programme was motivated by the growing recognition that assumptions of uniformity at certain scales are inadequate for extrapolating fluid behaviour both in time and space. Research spanning a wide spectrum of observation and simulation scales was undertaken by the programme which can be divided into four themes: (1) understanding the natural processes which lead to scaling relationships between size and magnitude of rock and flow heterogeneity; (2) quantification of essential fluid flow properties and their spatial pattern from measurements;(3) identification of appropriate statistical models and scaling laws describing rock property heterogeneity and fluid-rock interactions in geological media;(4) understanding the relationships between rock property distributions and flow model parameter distributions.

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    The Britrocks database provides an index to the BGS mineralogical & petrological collection. The computer database covers samples in the UK onshore mapping collection together with world wide reference minerals and the Museum Reserve collection. Currently circa 200k out of circa 300k samples are recorded in the computer database. A collection audit is ongoing, so availability of any particular sample is not guaranteed. The first England and Wales collection sample is from circa 1877, Threshthwaite Comb, Cumbria (collected by the Reverend Clifton Ward). The addition of new samples, transfer of records from registers and updates of existing records is ongoing on a regular basis. Internet access to the database is provided on the BGS web site.

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    The database contains a range of geochemical data for metamorphosed limestones from the Dalradian of Scotland and Northern Ireland. The data include a) whole-rock geochemical analyses by XRF (X-Ray Fluorescence) for major oxides and a range of trace elements for several hundred samples, b) a number of whole-carbonate O (oxygen) and C (carbon) stable isotope and Sr (strontium) data, c) electron microprobe mineral data on carbonates and calc-silicate minerals and d) ion-probe O stable isotope and mineral trace element data for calcites in a small number of samples. The samples from which the data have been derived were collected from a wide range of outcrops within the Scottish and Irish Dalradian, mainly concentrated in the North East Grampian Highlands of Scotland. The data have been collected mainly to support the mapping and scientific work being undertaken in the Grampian Highlands by BGS since the early 1980s. The database includes some data from the literature. All samples are located by British National Grid coordinates to the nearest 10m or better. The isotope data were acquired as part of a PhD study by C W Thomas in the late 1990s. The database is not currently being added to, but is still being used in various studies. The combined data provide wide-ranging insights into marine chemistry contemporary with deposition of the limestones and the way in which this chemistry changed with time during the Neoproterozoic, and they elucidate subsequent effects of diagenesis and metamorphism and the outcrop and grain-scale. The data set is largely complete with regard to geochemical data, but still requires some editing to bring all fields up to date, particularly with regard to lithostratigraphical assignation. The data are currently held in MS Access tables and can conveniently be displayed via GIS or abstracted in tabular form and used in spreadsheets, statistical analysis and graphing software.

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    Annual means of the geomagnetic field vector components from observatories around the world, from 1840 to the present day. At present there are about 160 observatories. These data are useful for tracking changes in the magnetic field generated inside the Earth. Data are produced by a number of organisations around the world, including BGS. Data are available in plain text from www.geomag.bgs.ac.uk. This data is connected to other geomagnetic data sets, but can be used without reference to them.

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    This is a collection of extracts from British newspapers describing earthquakes, mostly British. It contains original clippings, photocopies, and in a few cases manual transcriptions.

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    The Land Survey Plans collection of c.1,520 plans consists largely of mine plans acquired by the Survey, including 492 non-coal mine plans deposited by the National Coal Board 1984-87, and copies of mine plans derived from various sources including '6-inch reductions'. The collection also contains about 500 miscellaneous plans extracted from other Land Survey records in order to benefit from specialised systems of archival storage. The Survey's collection of Northern England mine plans are being added to the LSP collection. The collection supplements the Plans Of Abandoned Mines (Other than Coal & Oil Shale) in Scotland (NONCOALPLANSCO) providing an index to plans other than coal and oil shale for Scotland. Indexed on BGS Plans Database Index. Coal Authority hold some non-coal plans for Scotland. All non-confidential data held by NGRC(N) is available to users. Mainly coalfield areas of Central Scotland.

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    Collections of miscellaneous items mainly of semi-current value, including some field observations supplementary to 1:10560/1:10K mapping, arranged on 1:10K or One-Inch sheet basis. Set up in 1950's filing miscellaneous records for Scotland and Northern England. Records of archival value for permanent retention being transferred to Land Survey Archives (LSA). Indexed in the Land Survey Record Index (LSRI).