| publisher: | Concept Definition Task Group of IUGS CGI Interoperability Working Group (http://www.cgi-iugs.org/tech_collaboration/interoperability_working_group.html) |
| identifier: | http://resource.geosciml.org/classifierscheme/cgi/201202/stratigraphicrank |
| creator: | Concept Definition Task Group of IUGS CGI Interoperability Working Group (http://www.cgi-iugs.org/tech_collaboration/interoperability_working_group.html) |
| format: | application/rdf-xml |
| title: | CGI Stratigraphic Rank Term Vocabulary |
| language: | en |
| historyNote: | 2009-07-14. Generate SKOS encoding of vocabulary from Excel spreadsheet. |
| historyNote: | 2010-02-08. SMR Clean up namespace declarations so concept URI's follow CGI URN scheme; concepts have URN, are not document fragments. |
| historyNote: | 2010-11-28 SMR replace URN with http URI constructed according to CGI URI scheme (see https://www.seegrid.csiro.au/wiki/bin/view/CGIModel/PersistentIdentifiersInGeoSciMLServices) |
| historyNote: | 2011-02-16 SMR Add broader/narrower relations according to stratigraphic code. These are not meant to be formal isA or PartOf relations, rather should be read something like 'broader in local intention' or 'may be part of'. Add term 'Complex' to vocabulary |
| historyNote: | 2012-02-07 SMR update URI to replace numeric final token with English-language string as in original URN scheme. |
| historyNote: | 2012-02-27 SMR add skos:exactMatch triples to map URIs for concepts in this vocabulary to number-token URIs in 201012 version of same concepts. |
| changeNote: | 2009-12-07 SMR Update metadata properties for version, creator, title, and format. Change skos:HistoryNote to dc:source for information on origin of terms and definitions. |
| prefLabel: | CGI Stratigraphic Rank Term Vocabulary |
| definition: | This file contains the CGI StratigraphicRank vocabulary. This vocabulary contains categories used to classify geologic units in a generalization hierarchy from most local/smallest volume to most regional. Examples: group, subgroup, formation, member. No parent links because relation between e.g. formation and group is not 'is a' it is 'part of'. All formations are not groups, and a formation is not necessarily part of a group, therefore group is not a broader term than formation. |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/bed |
| Preferred label (en) | Bed |
| Definition () | The smallest formal lithostratigraphic unit, usually a distinctive lithic entity which can be distinguished from adjacent rocks by one or more physical characteristics. |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005; Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0001 |
| Broader | Member |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/complex |
| Preferred label (en) | Complex |
| Definition (en) | A lithostratigraphic unit composed of diverse types of any class or classes of rock (sedimentary, igneous, metamorphic), and characterized by irregularly mixed lithology or by hightly complicated structure relations to the extent that the original sequence of the component rocks may be obscured and the individual rocks or rock sequence cannot be readily mapped. |
| Source () | Salvador, A., ed. 1994. International Stratigraphic Guide: International Union of Geological Sciences, Trondheim, NO, 214 p. |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0015 |
| Related | Lithodeme |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/formation |
| Preferred label (en) | Formation |
| Definition () | A body of rock identified by lithic characteristics and stratigraphic position; it is usually but not necessarily tabular and is mappable at the Earth's surface or traceable in the subsurface. |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005; Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0003 |
| Broader | Group |
| Broader | Subgroup |
| Narrower | Member |
| Related | Lithodeme |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/group |
| Preferred label (en) | Group |
| Definition () | A group is the lithostratigraphic unit next higher in rank to either subgroup or formation. A groups may consist of two or more subgroups or two or more formations or a combination of both. |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005; Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0004 |
| Broader | Supergroup |
| Narrower | Formation |
| Narrower | Subgroup |
| Related | Suite |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/lithodeme |
| Preferred label (en) | Lithodeme |
| Definition () | A body of predominantly intrusive, highly deformed and/or highly metamorphosed rock, distinguished and delimited on the basis of rock characteristics. |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0005 |
| Broader | Suite |
| Related | Complex |
| Related | Formation |
| Related | Sequence |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/megasequence |
| Preferred label (en) | Megasequence |
| Definition (en) | A succession of strata comprising two or more supersequences. A large-scale sequence-stratigraphic unit deposited during one distinct phase of basin evolution, separated by major unconformities that mark a change in fundamental basin-controlling processes. |
| Source (en) | Haq, B.U., Hardenbol, J., and Vail, P.R., 1988, Mesozoic and Cenozoic chronostratigraphy an dcycles of sea-level changes, in Wilgus, C.K., et al., eds, Sea-level Changes: an Integrated Approach: Society of Sedimentary Geology Special Publication 42, p. 71-108. Peel, F., Cole, Gary A, Apps, Gillian M., and Moore, M. G., 2002, Implications of Megasequence Stratigraphy for the Petroleum System of the Ultra Deep Water Gulf of Mexico [abstract], Gulf Coast Association of Geological Societies Meeting October 30 - November 1, 2002, Austin, Texas, accessed at http://www.searchanddiscovery.net/documents/abstracts/gcags/images/peel01.htm, 2011-02-17 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0006 |
| Narrower | Supersequence |
| Related | Supersuite |
| Related informal terms () | http://www.sepmstrata.org/terminology/seq-strat.html; http://sepmstrata.org/terminology/second-order-cyc.html; Heward, A.P., 1978, Alluvial fan sequence and megasequence models: With examples from Westphalian D-Stephanian B coal-fields, northern Spain, in A.D. Miall, ed., fluvial sedimentation: Canadian Society of Petroleum Geologists Memoir 5, p. 59-76. |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/member |
| Preferred label (en) | Member |
| Definition () | A formal lithostratigraphic unit next in rank below a formation, and always part of a formation. It is a named entity within a formation because it possesses characteristics distinguishing it from adjacent parts of the formation. |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005; Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0007 |
| Broader | Formation |
| Narrower | Bed |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/rank_not_specified |
| Preferred label (en) | Not specified |
| Definition () | unit is not part of a defined stratigraphic hierarchy. |
| Source (en) | this vocabulary |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0008 |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/sequence |
| Preferred label (en) | Sequence |
| Definition (en) | A genetically related succession of strata bounded by unconformites or their correlative conformable contacts, and typically having a thickness of 10-100 metres. |
| Source (en) | Van Wagoner, J.C., Posamentier, H.W., Mitchum, R.M., Vail, P.R., Sarg, J.F., Loutit, T.S., Hardenbol, J., 1988, An overview of sequence stratigraphy and key definitions. In: Wilgus, C.K., Hastings, B.S., Kendall, C.G.St.C., Posamentier, H.W., Ross, C.A., Van Wagoner, J.C. (Eds.), Sea Level Changes––An Integrated Approach, vol. 42. SEPM Special Publication, pp. 39–45. |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0009 |
| Broader | Supersequence |
| Related | Lithodeme |
| Related informal terms () | http://www.sepmstrata.org/terminology/seq-strat.html |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/subgroup |
| Preferred label (en) | Subgroup |
| Definition () | A subgroup is the lithostratigraphic unit next higher in rank to formation. A subgroup usually consists of several formations. |
| Source (en) | Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0010 |
| Broader | Group |
| Narrower | Formation |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/suite |
| Preferred label (en) | Suite |
| Definition () | A formal lithodemic unit next higher in rank to lithodeme. It comprises two or more associated lithodemes of the same class (e.g., plutonic, metamorphic). |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0011 |
| Broader | Supersuite |
| Narrower | Lithodeme |
| Related | Group |
| Related | Supersequence |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/supergroup |
| Preferred label (en) | Supergroup |
| Definition () | A supergroup is a formal assemblage of related or superposed groups or of groups and formations |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005; Salvador, 1994 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0012 |
| Narrower | Group |
| Related | Supersuite |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/supersequence |
| Preferred label (en) | Supersequence |
| Definition () | A succession of strata comprising two or more sequences |
| Source () | Haq, B.U., Hardenbol, J., and Vail, P.R., 1988, Mesozoic and Cenozoic chronostratigraphy an dcycles of sea-level changes, in Wilgus, C.K., et al., eds, Sea-level Changes: an Integrated Approach: Society of Sedimentary Geology Special Publication 42, p. 71-108. |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0013 |
| Broader | Megasequence |
| Narrower | Sequence |
| Related | Suite |
| Related informal terms () | http://www.sepmstrata.org/terminology/seq-strat.html |
| URI | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/supersuite |
| Preferred label (en) | Supersuite |
| Definition () | A formal lithodemic unit next higher in rank to suite. It comprises two or more suites having a degree of natural relationship to one another |
| Source () | North American Commission on Stratigraphic Nomenclature, 2005 |
| Relationships: | |
| Exact match | http://resource.geosciml.org/classifier/cgi/stratigraphicrank/0014 |
| Narrower | Suite |
| Related | Megasequence |
| Related | Supergroup |