Definitions

from The Century Dictionary and Cyclopedia

  • Related to or belonging to that kind of structure called granophyre.

Etymologies

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Examples

  • We have begun a study of porphyritic pyroxene rhyolite, erupted as pyroclastic flow, and its intrusive equivalent, ejected during the same eruption as blocks of miarolitic granite with spectacular granophyric groundmass.

    Granophyre.html

  • Micrographic and granophyric textures are consistent with such undercooling, and will be most common in shallow intrusive settings where pressure remains high enough to retain ~1-1. 5 wt. % H2O.

    Granophyre.html

  • The granite's granophyric groundmass consists of intergrown quartz and potassium feldspar (~Or45), the latter consisting of plumose splays that nucleated directly from pre-existing phenocrysts.

    Granophyre.html

  • K/Na of the groundmass feldspar equals K/Na in pumiceous glass of the host pumice, hinting that the granophyric minerals grew by closed-system crystallization of the rhyolitic melt.

    Granophyre.html

  • Extreme U-Th disequilibrium in rift-related basalts, rhyolites and granophyric granite and the timescale of rhyolite generation, intrusion and crystallization at the Alid volcanic center, Eritrea: Journal of Petrology, v. 47, p. 2105-2122.

    references

  • The presence of such inclusions requires that growth of the granophyric texture from the silicate melt was accompanied by degassing (2nd boiling).

    Granophyre.html

  • Rapid growth of the granophyric texture may have been initiated during quench/degassing episodes.

    Granophyre.html

  • Similar quartz grains in the granophyric blocks contain primary, 2-phase, vapor-rich fluid inclusions, consistent with vapor saturation during growth of these igneous phenocrysts.

    Granophyre.html

  • Liquid (l) is seen at the bottom right, the rest being vapor (v). (g) Primary vapor-rich inclusion at the tip of a quartz stringer (outlined for clarity) in the granophyric groundmass.

    granophyre_photos.html

  • Photomicrographs of areas within granophyric block found as a lithic in the "pf unit" at Alid volcanic center.

    granophyre_photos.html

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