Digital geochronological index

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 (1995); Proterozoic after Cowie and Bassett (1989); Archaean after an unpublished decision of the Precambrian Subcommission of the IUGS.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.

Citation proposal
British Geological Survey. Digital geochronological index. https://metadata.bgs.ac.uk/geonetwork/srv/api/records/9df8df51-6401-37a8-e044-0003ba9b0d98

Simple

Date ( Creation ): 2002

Identifier: http://data.bgs.ac.uk/id/dataHolding/13480463

Distributor

British Geological Survey

Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

+44 115 936 3100

+44 115 936 3276

Originator

British Geological Survey

Environmental Science Centre, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

+44 115 936 3100

Point of contact

British Geological Survey

Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

+44 115 936 3100

Custodian

British Geological Survey

Environmental Science Centre, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

+44 115 936 3100

Maintenance and update frequency: notPlanned Not planned

GEMET - INSPIRE themes

Geology

BGS Thesaurus of Geosciences

Geochronology , Stratigraphy

Keywords

NERC_DDC

Access constraints: otherRestrictions Other restrictions

Use constraints: otherRestrictions Other restrictions

Other constraints: The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints: Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk ) for advice, should the position not be clear.

Metadata language: English English

Topic category

Geoscientific information

Supplemental Information: Is a corporate dictionary and as such should not be altered. BGS Geological Timechart Cowie, J W. and Bassett, M G. 1989. International Union of Geological Sciences 1989 Global Stratigraphic Chart with geochronometric and magnetostratigraphic calibration. Supplement to Episodes, Vol. 12, No. 2. Fortey, R A, Harper, D A T, Ingham, J K, Owen, A W and Rushton, A W A. 1995. A revision of Ordovician series and stages from the historical type area. Geological Magazine, Vol., 132, 15-30. Gradstein, F M, and Ogg, J. 1996. A Phanerozoic time scale. Episodes, Vol.19, 3-5.Logically consistent single geochronological scheme.

Reference System Information

No information provided.

Distribution format

ORACLE - Used as a domain constraint on corporate data tables ()

Distributor

British Geological Survey

Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom

+44 115 936 3100

+44 115 936 3276

OnLine resource: BGS Geological Timechart
The data held within the Digital geochronological index can be viewed within the BGS Geological Timechart which can be viewed by accessing the page this URL links to.

OnLine resource: BGS Enquiries
Contact details for accessing the dataset can be viewed by accessing the 'BGS Enquiries' contact page that this URL links to.

Hierarchy level: nonGeographicDataset Non geographic dataset

Other: non geographic dataset

Conformance result

Date ( Publication ): 2011

Explanation: See the referenced specification

Pass: false

Conformance result

Date ( Publication ): 2010-12-08

Explanation: See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Pass: false

Statement: Developed from the pre-existing DIC_CHRONOSTRAT, parts of which had become obsolete. The development followed the recommendations of the BGS Stratigraphy Committee. DIC_CHRONOSTRAT was itself developed from a pre-existing digital chronostratigraphical index which formed segment CSCO of BGS.DIC.