| format: | application/rdf+xml |
| identifier: | http://resource.geosciml.org/classifierscheme/cgi/201012/metamorphicgrade |
| language: | eng |
| title: | CGI metamorphic grade categories |
| creator: | Concept Definition Task Group of IUGS CGI Interoperability Working Group (http://www.cgi-iugs.org/tech_collaboration/interoperability_working_group.html) |
| publisher: | Concept Definition Task Group of IUGS CGI Interoperability Working Group (http://www.cgi-iugs.org/tech_collaboration/interoperability_working_group.html) |
| language: | en |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0001 |
| Preferred label (en) | High metamorphic grade |
| Definition (en) | Protolith structures almost always obliterated, evidence of partial melting common. Includes rocks metamorphosed in high-temperature amphibolite, pyroxene hornfels, and medium to high-temperature eclogite facies. Mineral assemblages according to Fry (1984) Table 10-1: ultramafic-olivine, anthophyllite, cummingtonite, enstatite; mafic-hornblende, (diopside, garnet); calc-aluminous basic-plagioclase; pelite, semi-pelite -- K-feldspar, biotite, quartz, Al-minerals (garnet), migmatite. |
| Source () | Smulikowski et al, 2003; Fry, 1984 |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0002 |
| Preferred label (en) | Low metamorphic grade |
| Definition (en) | Metamorphic effects clearly visible, protolith structures typically still observable, includes rocks metamorphosed in greenschist, high-temperature blueschist, very low temperature eclogite facies. Mineral assemblages according to Fry (1984) Table 10-1: ultramafic-serpentine (talc, magnesite); mafic-chlorite, actinolite (garnet); calc-aluminous basic-albite, epidote; pelite, semi-pelite -- white mica, chlorite, quartz, biotite (garnet, Al-minerals). |
| Source () | Smulikowski et al, 2003; Fry, 1984 |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0003 |
| Preferred label (en) | Medium metamorphic grade |
| Definition (en) | Protolith structure typically obliterated. Includes rocks metamorphosed in high-temperature epidote-amphibolite, low-temperature amphibolite, and low temperature eclogite facies. Mineral assemblages according to Fry (1984) Table 10-1: ultramafic-olivine, talc (magnesite, anthophyllite); mafic-hornblende, (diopside, garnet); calc-aluminous basic-plagioclase; pelite, semi-pelite -- white mica, biotite, quartz (garnet, Al-minerals). |
| Source () | Smulikowski et al, 2003; Fry, 1984 |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0004 |
| Preferred label (en) | Metamorphic grade not specified |
| Definition (en) | for use in normative descriptions to explicitly indicate that any metamorphic condition is allowed (including non-metamorphosed). |
| Source () | This Vocabulary |
| Relationships: | |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0007 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0005 |
| Preferred label (en) | Metamorphic grade unknown |
| Definition (en) | For use in instance descriptions to indicate that no information is available on metamorphic grade |
| Source () | This Vocabulary |
| Relationships: | |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Preferred label (en) | Metamorphosed grade not specified |
| Definition (en) | Rock is metamorphosed, may have any value for metamorphic grade. |
| Source () | This Vocabulary |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0004 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0001 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0002 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0003 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0008 |
| Narrower | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0009 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0007 |
| Preferred label (en) | Not metamorphosed |
| Definition (en) | Rock or sediment not metamorphosed. |
| Source () | This Vocabulary |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0004 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0008 |
| Preferred label (en) | Very high metamorphic grade |
| Definition (en) | Protolith structures almost always obliterated. Includes rocks metamorphosed in granulite (or sanidinite), and high-temperature eclogite facies. Mineral assemblages according to Fry (1984) Table 10-1: ultramafic-olivine, enstatite; mafic-hypersthene, diopside (hornblende); calc-aluminous basic-plagioclase; pelite, semi-pelite -- hypersthene + Al-minerals (K-feldspar, quartz), or sapphirine. |
| Source () | Smulikowski et al, 2003; Fry, 1984 |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Notes: |
| URI | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0009 |
| Preferred label (en) | Very low metamorphic grade |
| Definition (en) | Rock very slightly metamorphosed, protolith structure ubiquitous; mineral assemblage of zeolite facies, subgreenschist facies, or low temperature part of blueschist facies. Mineral assemblages according to Fry (1984) Table 10-1: ultramafic-serpentine (quartz, magnesite); mafic-clay, chlorite, relict igneous minerals; calc-aluminous basic-zeolite, pumpellite, epidote, albite; pelite, semi-pelite -- clays, chlorite, sericite, quartz. |
| Source () | Smulikowski et al, 2003; Fry, 1984 |
| Relationships: | |
| Broader | http://resource.geosciml.org/classifier/cgi/metamorphicgrade/0006 |
| Notes: |
| URI | |
| Preferred label (en) | CGI Metamorphic Grade Categories |
| Definition (en) | This file contains the CGI Metamorphic Grade vocabulary. Vocabulary for populating Metamorphic grade property in GeoSciML metamorphicDescription elements. Derived from Fettes and Desmons, 2007 |
| Relationships: | |
| Notes: | |
| History note (en) | 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. |
| History note (en) | 2010-11-28 SMR replace URN identifiers with http URI identifiers according to CGI URI scheme (see https://www.seegrid.csiro.au/wiki/bin/view/CGIModel/PersistentIdentifiersInGeoSciMLServices) |