intersertal


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intersertal

(ˌɪntəˈsɜːtəl)
adj
(Geological Science) geology (of a texture of igneous rock) having interstices containing a small proportion of glass or cryptocrystalline material
References in periodicals archive ?
Overall, the blocks show a hypocrystalline, porphyritic texture with plagioclase, clinopyroxene, orthopyroxene, and olivine phenocrysts in an intersertal matrix (Figs.
The spilitic basalts have plagioclase, clinopyroxene and minor opaque minerals (titaniferous minerals) that have intersertal texture.
Roca de color oscuro y textura afirica hialofitica a intersertal, se reconocen pequenas, (< 1 mm) vesiculas (20%) de formas redondeadas a elipsoidales irregulares, de distribucion aleatoria, producto del escape de gases.
En cuanto al aspecto litologico y de historia geologica, una muestra de roca tomada de la Quebrada Siuta (caldera de Moravia), fue clasificada por el Laboratorio de Petrologia de la Escuela Centroamericana de Geologia como dacita con horablenda (transicion a andesita acida) con las siguiente composicion textural: hipocristalina glomeroporfiritica seriada con fenocristales de plagioclasa, homblenda, augita, hipersteno y olivino alterado dentro de una matriz con textura intersertal.
They have porphyritic texture with plagioclase phenocrystals (up to 10 %) in a subophitic to intersertal groundmass.
These are andesine-oligoclase in laths, intersertal grains of augite (diabase texture), minor quartz, small amounts of titanomagnetite, and ilmenite.
In some areas, generally near contacts with the Baring Granite unit, quartz diorite has hiatal porphyritic texture with plagioclase phenocrysts 2 to 4 cm in length, set in a fine-grained intersertal to intergranular matrix of augite, plagioclase, and quartz.
Most of the basalts are porphyritic and textures range from very fine-grained to very coarse-grained, using these terms in the volcanic sense (Table 1), and include ophitic, subophitic, intergranular and intersertal varieties.
The basaltic rocks are generally fine-grained and porphyritic, with sub-ophitic to ophitic clinopyroxene, while the intersertal glass is charged with ore due possibly to devitrification.
Textura: hipocristalina, glomeroporfiritica, ligeramente vesicular, con fenocristales de plagioclasa, augita, hipersteno y pocos microfenocristales de olivino alterado y magnetita dentro de una matriz intersertal.
Matriz (41%), intersertal compuesta por feldespatos, piroxenos, opacos, arcillas y vidrio.
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