Rock, charnockitic - A type of coarse-grained normal crystalline rock. The charnockitic suite of rocks is usually characterised by the presence of orthopyroxene (or fayalite plus quartz, though in such assemblages fayalite is invariably altered) and, in many such rocks, perthite, mesoperthite or antiperthite. Primary hydrous minerals are generally absent. They are commonly associated with norites and anorthosites and are linked closely with high-grade metamorphic terrains. Despite being composed largely of feldspar and quartz, charnockitic rocks are generally melanocratic due to very dark feldspar crystals, which also have a characteristically greasy appearance. British Geological Survey Research Report RR/99/06, section 5.1. Examples (root name and qualifier): charnockitic granite, charnockitic monzonite, charnockitic tonalite.
CHARNR
Charnockitic rock
The BGS Rock Classification Scheme
The BGS Rock Classification Scheme classifies all types of earth material or other substance that may be recorded in a geological log or section. This is a combined scheme that consists of all concepts from the 3 sub-schemes. The 3 sub-schemes cover different sets of terms (single rocks, composite rocks, dummy rocks) and have different semantics of hierarchical relationship
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Title
Status
Type
Same As
has broader
Relates a concept to a concept that is more general in meaning.
definition
A statement or formal explanation of the meaning of a concept.
is in scheme
Relates a resource (for example a concept) to a concept scheme in which it is included.
has narrower
Relates a concept to a concept that is more specific in meaning.
notation
A notation, also known as classification code, is a string of characters such as "T58.5" or "303.4833" used to uniquely identify a concept within the scope of a given concept scheme.
preferred label
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This vocabulary is a re-published and only marginally changed version of the Registry Ontology's (http://epimorphics.com/public/vocabulary/Registry.html) *Status* vocabulary (online in RDF: http://purl.org/linked-data/registry). The only real change to content has been the addition of the term `unstable`. This re-publication has been performed to allow the IRIs of each vocab term (skos:Concept) to resolve to both human-readable and machine-readable forms of content (HTML and RDF), using HTTP content negotiation. Note that just like the original form of this vocabulary, while it is a SKOS vocabulary implemented as a single skos:ConceptScheme, it is also an OWL Ontology and that each *Status* is both a skos:Concept and a reg:Status individual.
Registry Status Vocabulary
Coarse-grained normal crystalline rock - In the Rock Classification Scheme, a crystalline rock is coarse-grained if its average crystal size is greater than 2 mm. This group corresponds to the plutonic division of the IUGS scheme. British Geological Survey Research Report RR/99/06, section 1.3 and figs. 1, 3 and 9.
Coarse-grained normal crystalline rock
Granite, charnockitic
Charnockitic granite
Monzonite, charnockitic
Charnockitic monzonite
Tonalite, charnockitic
Charnockitic tonalite
Rock Classification Scheme - single rock types sub-scheme
Subscheme of Rock Classification Scheme that classifies single rock types in a class-sub class hierarchy. Volumes 1 to 4 of published reports.
Concept
An idea or notion; a unit of thought.
An entry that is seen as having a reasonable measure of stability, may be used to mark the full adoption of a previously 'experimental' entry.
stable