- porphyroblastic texture
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порфиробластическая структура
English-Russian dictionary of geology. 2011.
porphyroblastic texture
Смотреть что такое "porphyroblastic texture" в других словарях:
Porphyroblast — [ thumb|right|350px|An almandine garnet growing as a porphyroblast in a quartzitic gneiss. This particular garnet measures 3 cm. Location: Paraíba, Brazil.] A porphyroblast is a large mineral crystal in a metamorphic rock which has grown within… … Wikipedia
metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… … Universalium
