blastoporphyritic

blastoporphyritic

[¦blas·tō¦pȯr·fə¦rid·ik]
(petrology)
Applied to the textures of metamorphic rocks that are derived from porphyritic rocks; the porphyritic character still remains as a relict feature.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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