Definitions
from The Century Dictionary.
- noun In petrography, a name proposed by Cathrein (1890) as a substitute for tonalite, and described as a granular igneous rock of the group intermediate between granite and diorite, containing orthoclase and plagioclase feldspars with hornblende and biotite. Brögger uses the term for highly quartzose monzonites.
Etymologies
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Examples
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Approximately 15 million years ago a large mass of magma intruded between the folds of the Crocker Range and solidified into adamellite (a type of granite).
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