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PREFERRED TERM
gneiss  
TYPE
  • http://purl.org/net/provenance/ns#DataItem

DEFINITION
  • Foliated metamorphic rock with bands or lenticles rich in granular minerals alternating with bands or lenticles rich in minerals with a flaky or elongate prismatic habit. Mylonitic foliation or well developed, continuous schistosity (greater than 50 percent of the rock consists of grains participate in a planar or linear fabric) precludes classification with this concept.
DESCRIPTION
  • Foliated metamorphic rock with bands or lenticles rich in granular minerals alternating with bands or lenticles rich in minerals with a flaky or elongate prismatic habit. Mylonitic foliation or well developed, continuous schistosity (greater than 50 percent of the rock consists of grains participate in a planar or linear fabric) precludes classification with this concept.
IDENTIFIER
  • gneiss
TITLE
  • gneiss
URI
http://inspire.ec.europa.eu/codelist/LithologyValue/gneiss
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EQUIVALENT CONCEPTS
Lithology