Flashcards
Igneous- Geology Midterm
Cards in this deck (12)
- 1—andesite porphyry
subvolcanic
texture: porphyritic
intermediate rock
minerals: plagioclase, amphibole - 2—rhyolite porphyry
subvolcanic
texture: porphyritic
felsic rock
minerals: feldspar, quartz, biotite
- 3—granite
plutonic
texture: phaneritic
felsic rock
minerals: feldspar, quartz, biotite
- 4—peridotite
plutonic
texture: phaneritic
ultramafic rock
olivine
- 5—scoria
volcanic
texture: vesicular
intermediate rock
plagioclase, pyroxene
- 6—obsidian
volcanic
texture: glassy
felsic/intermediate rock
biotite, quartz, amphibole
- 7—gabbro
plutonic
texture: phaneritic
felsic rock
pyroxene, olivine
- 8—pumice
volcanic
texture: vesicular
felsic rock
biotite and orthoclase
- 9—rhyolite
subvolcanic
texture: aphanetic
felsic rock
quartz and plagioclase
- 10—rhyolite porphyry
subvolcanic
texture: porphyritic
felsic rock
minerals: feldspar, quartz, biotite
- 11—basalt
volcanic
texture: aphanitic
mafic rock
pyroxene and olivine
- 12—diorite
plutonic
texture: phaneritic
felsic rock
amphibole and pyroxene
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- Flashcards on Igneous- Geology Midterm, created by Annie Paris on 07/03/2019.
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- Annie Paris
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