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- Porphyroclast abstract "A porphyroclast is a clast or mineral fragment in a metamorphic rock, surrounded by a groundmass of finer grained crystals. Porphyroclasts are fragments of the original rock before dynamic recrystallisation or cataclasis produced the groundmass. This means they are older than the groundmass. They were stronger pieces of the original rock, that could not as easily deform and were therefore not or hardly affected by recrystallisation. They may have been phenocrysts or porphyroblasts in the original rock.Porphyroclasts are often confused with porphyroblasts. The latter are also large crystals in a finer matrix, but they grew during, or after deformation took place and during or after the matrix was formed. The timing of porphyroblast growth can be determined by examining the microstructure preserved (or not) within them as poikiloblasts.In strongly deformed rocks porphyroclasts are often rotated by the shear stress in the rock. Their shape can be used to determine the direction of the shear.".
- Porphyroclast thumbnail Garnet_porphyroblast.JPG?width=300.
- Porphyroclast wikiPageID "6273655".
- Porphyroclast wikiPageLength "2670".
- Porphyroclast wikiPageOutDegree "18".
- Porphyroclast wikiPageRevisionID "650643637".
- Porphyroclast wikiPageWikiLink Category:Metamorphic_petrology.
- Porphyroclast wikiPageWikiLink Category:Structural_geology.
- Porphyroclast wikiPageWikiLink Clast.
- Porphyroclast wikiPageWikiLink Crystal.
- Porphyroclast wikiPageWikiLink Deformation_(engineering).
- Porphyroclast wikiPageWikiLink Dynamic_recrystallisation.
- Porphyroclast wikiPageWikiLink Dynamic_recrystallization.
- Porphyroclast wikiPageWikiLink Groundmass.
- Porphyroclast wikiPageWikiLink Matrix_(geology).
- Porphyroclast wikiPageWikiLink Metamorphic_rock.
- Porphyroclast wikiPageWikiLink Mineral.
- Porphyroclast wikiPageWikiLink Phenocryst.
- Porphyroclast wikiPageWikiLink Porphyroblast.
- Porphyroclast wikiPageWikiLink Rotation.
- Porphyroclast wikiPageWikiLink Shear_stress.
- Porphyroclast wikiPageWikiLink Shear_zone.
- Porphyroclast wikiPageWikiLink Strength_of_materials.
- Porphyroclast wikiPageWikiLink File:Augen_mylonite.jpg.
- Porphyroclast wikiPageWikiLink File:Garnet_porphyroblast.JPG.
- Porphyroclast wikiPageWikiLinkText "Porphyroclast".
- Porphyroclast wikiPageWikiLinkText "porphyroclast".
- Porphyroclast hasPhotoCollection Porphyroclast.
- Porphyroclast wikiPageUsesTemplate Template:Reflist.
- Porphyroclast subject Category:Metamorphic_petrology.
- Porphyroclast subject Category:Structural_geology.
- Porphyroclast hypernym Clast.
- Porphyroclast type Article.
- Porphyroclast type Article.
- Porphyroclast comment "A porphyroclast is a clast or mineral fragment in a metamorphic rock, surrounded by a groundmass of finer grained crystals. Porphyroclasts are fragments of the original rock before dynamic recrystallisation or cataclasis produced the groundmass. This means they are older than the groundmass. They were stronger pieces of the original rock, that could not as easily deform and were therefore not or hardly affected by recrystallisation.".
- Porphyroclast label "Porphyroclast".
- Porphyroclast sameAs Porfyroclast.
- Porphyroclast sameAs m.0f_0kt.
- Porphyroclast sameAs Порфировая_структура.
- Porphyroclast sameAs Порфирокласт.
- Porphyroclast sameAs Порфірова_структура.
- Porphyroclast sameAs Q1935769.
- Porphyroclast sameAs Q1935769.
- Porphyroclast wasDerivedFrom Porphyroclast?oldid=650643637.
- Porphyroclast depiction Garnet_porphyroblast.JPG.
- Porphyroclast isPrimaryTopicOf Porphyroclast.