Related Overviews


'porphyroclast' can also refer to...


More Like This

Show all results sharing this subject:

  • Earth Sciences and Geography


Show Summary Details

Quick Reference

A large, intact, mineral fragment or clast which is surrounded by a finer-grained, crushed groundmass produced during dynamic metamorphism. The porphyroclast represents a relict of the original rock which has escaped crushing during the deformation process.

Subjects: Earth Sciences and Geography.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.