Concept
Alternate Profiles
Different views and formats:
Alternate Profiles ?Profiles (alternative information views) encoded in various Media Types (HTML, text, RDF, JSON etc.) are available for this resource.
- Preferred Labelskos:prefLabel
granulite
- URI
- http://resource.geosciml.org/classifier/cgi/lithology/granulite ↗Go to the persistent identifier link
- Within Vocab
- Simple Lithology
| Preferred Labelskos:prefLabel | granulite |
|---|---|
| Definitionskos:definition | Metamorphic rock of high metamorphic grade in which Fe-Mg silicate minerals are dominantly hydroxl-free; feldspar must be present, and muscovite is absent; rock contains less than 90 percent mafic minerals, less than 75 percent calcite and/or dolomite, less than 75 percent quartz, less than 50 percent iron-bearing minerals (hematite, magnetite, limonite-group, siderite, iron-sulfides), and less than 50 percent calc-silicate minerals. |
| Exact MatchexactMatch |
http://inspire.ec.europa.eu/codelist/LithologyValue/granulite
|
| Broaderbroader |
metamorphic rock
|
| Relatedrelated |
gneiss
granofels |
| See AlsoseeAlso | Simple Lithology |
| Exampleexample | nebulite |
| Notenote | Wimmenauer (1985) requires granulite to consist of at least 20 percent feldspar. Garnet is frequently present; some hornblende or biotite may be present. The rock has a granoblastic texture and gneissose to massive structure; grain size and fabric may be variable on a decimetric scale. Foliation is less well developed than in rock that would typically be called gneiss. The minerals present in a granulite vary depending on the protolith and the temperature and pressure conditions experienced during metamorphism. According to Fettes and Desmons (2007) the main calc-silicate minerals are calcic garnet, calcic plagioclase, calcic scapolite, diopside-hedenbergite, epidote group minerals, hydrogrossular, johannsenite, prehnite, pumpellyite, titanite, vesuvianite, wollastonite. Note that the shale and siltstone categories may apply to any of the mineralogically defined mudstone categories. |
| Is Defined ByisDefinedBy | Simple Lithology |