- aphyric texture
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афировая структура
English-Russian dictionary of geology. 2011.
aphyric texture
Смотреть что такое "aphyric texture" в других словарях:
афірова структура — афировая структура aphyric texture aphyrische Struktur дрібнокристалічна структура ефузивних г.п., які не мають вкраплеників (фенокристалів). Протилежне – порфірова структура … Гірничий енциклопедичний словник
Phenocryst — A phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. Phenocrysts often have euhedral forms either due to early growth within a magma or by post… … Wikipedia
Latite — is an igneous, volcanic (extrusive) rock, with aphanitic aphyric to aphyric porphyritic texture. Its mineral assemblage is usually alkali feldspar and plagioclase (in a ratio < 1:4). Quartz is absent in a feldspathoid bearing latite, and olivine… … Wikipedia
Mount Pleasant Caldera — Elevation approx. 248 m (814 ft) Listing List of volcanoes in Canada … Wikipedia
