hypocrystalline


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hypocrystalline

[¦hī·pō′krist·əl·ən]
(petrology)
Pertaining to the texture of igneous rock characterized by crystalline components in an amorphous groundmass. Also known as hemicrystalline; hypohyaline; merocrystalline; miocrystalline; semicrystalline.
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References in periodicals archive ?
The bombs have a hypocrystalline, porphyritic, highly vesicular (50%) texture with plagioclase, clinopyroxene, orthopyroxene, and olivine phenocrysts in an intersertal matrix (Figs.
PETROGRAPHIC ANALYSIS OF THE VOLCANIC BOMBS AND BLOCKS FROM POAS VOLCANO: APRIL-JUNE 2017 ERUPTIVE PERIOD/ANALISIS PETROGRAFICO DE LAS BOMBAS Y BLOQUES VOLCANICOS DEL VOLCAN POAS: PERIODO ERUPTIVO DE ABRIL A JUNIO DE 2017
Those are hypocrystalline alkaline trachytes and rhyolites (Pardo, 2004), that suggest that volatile release was continuous through the permeable conduit walls while magma rising occurred.
The Paipa volcano, Eastern Cordillera of Colombia, South America: volcanic stratigraphy
The basalts from Bbc are hypocrystalline, subporphyritic and sub-intersertal in texture.
Geochemistry and petrogenesis of the volcanic rocks from Bagh complex, northern Balochistan, Pakistan

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