Definitions
from The Century Dictionary.
- noun In petrography, a name given by Rosenbusch (1898) to gneiss derived from igneous rocks: opposed to
paragneiss .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A
gneiss derived from anigneous rock .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
ortho- + gneiss
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Examples
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This hole ended in fresh, unaltered granodioritic orthogneiss at a drill core length of 406 metres.
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