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2 hits

  • Thumbnail for AGUNG FL

    The plagioclase crystals in this vesicular basalt display a continuous range of sized from groundmass microlite to sieve-textured, sometimes zoned blocky phenocrysts. The groundmass contains more blocky plagioclase than other lavas from the Bali suite. The pyroxenes are generally subhedral and form glomeroporphyroclasts.

  • Thumbnail for AGUNG PMC

    The high quantity of vesicles in this thin section keep the phenocrysts of plagioclase, clinopyroxene, and olivine well separated. While the clinopyroxene is euhedral in shape, the other two phases are more subhedral. Plagioclase phenocrysts have a sieve texture. The groundmass is mostly glass, with a few, moderately sized grains of plagioclase.