Definition of Porphyroid. Meaning of Porphyroid. Synonyms of Porphyroid

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Definition of Porphyroid

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Meaning of Porphyroid from wikipedia

- Porphyry (/ˈpɔːrfəri/ POR-fə-ree) is any of various granites or igneous rocks with co****-grained crystals such as feldspar or quartz dis****d in a fine-grained...
- developed. One common form of aggrading neomorphism is called porphyroid neomorphism. Porphyroid neomorphism occurs when a small number of large crystals form...
- bottom): Génis greenschist Génis sericite schist Puy-de-Cornut arkose Génis porphyroid The Génis greenschist is the youngest formation of the Génis Unit. The...
- are mostly very-co**** grained, ranging in type from microgranites to porphyroid granites. The m****if is tilted in a north-westerly direction and was cut...
- type foothills Type of rock Tri****ic carbonate, quartzite/quartz conglomerate, arkose slate-breccia-porphyroid-series (Wechsel slate, Alpine verrucano)...
- and geochemistry of the pyroclastics of the Lower Ems/Lower Devonian (porphyroids) in the southern Rhenish Slate Mountains. (= Geological treatises Hessen...
- de São Mamede Natural Park. The monolith, consisting of co****-grained porphyroid granite, was discovered in a rural area, now used mainly for cork production...
- thick, made up of quartz porphyroids and tuff, mainly in the west (Hohe Salve, Hahnenkamm and Wildseeloder). Over the porphyroids lie various horizontal...
- igneous origin for the rock. Such porphyry-schists have been called porphyroids or porphyroid-schists, and in the United States the name aporhyolite has been...
- period of igneous activity, that resulted in granites and the Bl****eneck Porphyroid, a weakly metamorphosed porphyry in the Greywacke Zone, with mixed layers...