porphyritic การใช้

• Most types of igneous rocks display some degree of porphyritic texture.
• The lava domes and San Antonio lava flows have porphyritic surfaces.
• It is constructed from porphyritic dacite lava flows and lava domes.
• Both have a pyroclastic texture with pumices bearing a porphyritic texture.
• Mount Beerburrum ( 278m ) is composed of porphyritic trachyte.
• More commonly, chondrules display what is known as a porphyritic texture.
• In thin section, dacites may have an aphanitic to porphyritic texture.
• This porphyritic texture is indicative of multi-stage cooling of magma.
• The mountain is a volcanic feature known as a trachyte porphyritic texture.
• The most common igneous rock type is porphyritic hornblende diorite.
• These consist of alkali-feldspar porphyritic quartz-trachyte and trachyte.
• Rocks are porphyritic and contain hornblende as well as biotite or pyroxene.
• Rock samples taken from Llullaillaco are mostly porphyritic or matrix.
• The surface texture of the rocks is trachytic to porphyritic.
• They are very commonly porphyritic, petrologically indistinguishable from lavas of similar composition.
• The main type of igneous rock is porphyritic diorite.
• Crystalline textures include phaneritic, foliated, and porphyritic.
• They range from porphyritic alkaline rhyolite to alkaline aplite to porphyritic alkaline granite.
• They range from porphyritic alkaline rhyolite to alkaline aplite to porphyritic alkaline granite.
• Textures range from porphyritic to mantle-derived magma.