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Proportion Term
This file contains the CGI Proportion Term vocabulary, as defined by the IUGS Commission for Geoscience Information (CGI) Geoscience Terminology Working Group. This vocabulary provides terms that may be used to qualitatively express abundance of composition parts in a geologic unit or earth material description. Quantity that specifies the fraction of the geologic unit composed of the compound material. This vocabulary is used for GeologicUnit.GeologicUnitPart.proportion, GeologicUnit.compositionPart.proportion, and for compoundMaterial.ConsituentPart.proportion. By extension, this vocabulary includes all concepts in this conceptScheme, as well as concepts in any previous versions of the scheme.
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.
2010-02-11 Add narrower relationship links by adding skos:narrower link in Protege, defining skos:narrower as inverse of skos:broader, calculating with Pellet reasoner to add inferred axioms, and using 'file/Export inferred axioms as ontology' in Protege.
2010-09-26 SMR work on rearranging hierarchy to recognize that the top concept is 'present', all others are entailed by this property. Also recognize inconsistent labeling of major-minor and dominant-subordinate. Proposal in this is 'more than half', 'less than half', and change 'dominant' label to 'major' to parallel usage of 'minor'. Awaiting comment...
2010-11-28 SMR replace URN with http URI according to CGI URI scheme (see
2011-07-07. GD Clean up remaining namespace declarations so no URN is present in the ontology. Removed empty concepts with genid.
2012-02-07 SMR update URI to replace numeric final token with English-language string as in original URN scheme.
2012-02-27 SMR add skos:exactMatch relating URI in this vocabulary to URI in 201012 version using numeric tokens. Update the vocabulary definition text.
2013-02-04 SMR Update to 201211 version; add collection entity, check all pref labels are lower case, remove owl:NamedIndividual and Owl:Thing rdf:types. Add missing for missing definitions.
2016-11-25 OLR regenerate SKOS-RDF file as part of migration to new vocabulary server. No change to 2012 concepts.
This file contains the 2016 SKOS-RDF version of the CGI Proportion Term vocabulary. Compilation and review in MS Excel spreadsheet, converted to MS Excel for SKOS generation using SKOS_for_GA_from_XLS_2016.03.xslt

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