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A digital geochronological index to act as a domain constraint for geochronology columns in corporate data tables. It decodes geochronology codes, models pseudo parent-child relationships between intervals (for example, find the epochs within a given period), allows range searches (for example, find the epochs between lower limiting and upper limiting epochs) and provides radiometric ages with ranges of uncertainty. Follows the recommendations of the BGS Stratigraphy Committee. Phanerozoic after Gradstein and Ogg (1996), with the Ordovician scheme of Fortey et al. (1995); Proterozoic after Cowie and Bassett (1989); Archaean after an unpublished decision of the Precambrian Subcommission of the IUGS. Covers the whole of geological time. Geochronological resolution usually to age level. Lower resolution in the Archaean, Proterozoic, Cambrian. Greater resolution in the Caradoc Epoch.
Derived from data collated from the 2005 Aggregate Minerals Survey, carried out by BGS for the Department for Communities and Local Government (CLG) which provide an in-depth and up-to-date understanding of regional and national sales, inter-regional flows, transportation, consumption and permitted reserves of primary aggregates for England and Wales. The information is used to monitor and develop policies for the supply of aggregates. This data set depicts the flow of crushed rock aggregate between the regions of England and Wales. The data originator also has similar data for sand and gravel and also the same data derived from the 1997 and 2001 Aggregate Minerals Surveys.
The BGS Geoscience Thesaurus contains approximately 6000 descriptor terms for concepts in the geoscience and related subjects. Some entries have scope notes to further explain the term. The original source of the data was the Australian Mineral Foundation thesaurus of geoscience; some terms have been added or updated to suit BGS needs and the content will continue to be updated as required. The thesaurus includes synonyms to descriptor terms, hierarchical relationships, symmetric (see also) relationships and lapsed (deprecated) term replacements.
This data was produced to support a project looking at low permeability rocks in sub-Saharan Africa. Multiple boreholes were drilled for the project with geology identified from chippings. Groundwater chemistry was analysed from the resulting boreholes. The data contained within this record is from the CD that accompanies the report: J Davies and B É Ó Dochartaigh. 2002. Low Permeability Rocks In Sub-Saharan Africa. Groundwater development in the Tabora Region, Tanzania. British Geological Survey Internal Report, CR/02/191N. 71pp http://nora.nerc.ac.uk/id/eprint/505608/1/CR_02_191N.pdf The CD has not been uploaded in full elsewhere.
This data was produced to support a project looking at low permeability rocks in sub-Saharan Africa. Multiple boreholes were drilled for the project with geology identified from chippings. Groundwater chemistry was analysed from the resulting boreholes. The data contained within this record is from the CD that accompanies the report: J Davies and J Cobbing, 2002. An assessment of the hydrogeology of the Afram Plains, Eastern Region, Ghana. British Geological Survey Internal Report, CR/02/137N. 66pp http://nora.nerc.ac.uk/id/eprint/505607/1/CR_02_137N.pdf The CD has not been uploaded in full elsewhere.
Regional property grids of the Utsira Sand based on mapping from 2D regional seismic lines and geophysical logs. Grids include: Top Utsira depth, Base Utsira depth, Utsira isopach, Utsira porosity, Utsira porosity effective thickness, Utsira proportion clean sand. 2 km grid spacing. SACS/SACS2 EU project.