Flashcards
Geology Igneous
Cards in this deck (13)
- 1—Andesite
Intermediate
Plag-FSpar, K-Spar, Quartz, Amphibole
Aphanitic (fine-grained) - 2—Basalt
Mafic
Plag-Spar, Amphibole, Pyroxene
Aphanitic (fine-grained)
- 3—Diorite
Intermediate
Quartz, Plag-Spar, Amphibole
Phaneritic (coarse-grained)
mix of light and dark, no pinks/greens
- 4—Gabbro
Mafic
Plag-Spar, Pyroxene
Phaneritic (coarse-grained)
- 5—Granite
Felsic
Muscovite, Quartz, K-Spar
Phaneritic (coarse-grained)
- 6—Obsidian
Mafic
Glassy
Conchoidal fractures
- 7—Periodite
Ultramafic
Olivine, Pyroxene
Phaneritic (coarse-grained)
- 8—Pumice
Felsic/Intermediate
abundant tiny vesicles, lightweight, gray
Vesicular
- 9—Rhyolite
Felsic
Muscovite, Quartz, K-Spar
Aphanitic (fine-grained)
- 10—Scoria
sponge like
mafic
vesicular
- 11—(Volcanic) Tuff
Felsic-Mafic
Pyroclastic or Fragmental
size < 2mm
- 12—Vesicular Basalt
Mafic
Vesicular
- 13—Volcanic Breccia
Felsic-Mafic
Pyroclastic or Fragmental
size > 2mm
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- Flashcards on Geology Igneous, created by HeatherSwienton on 19/02/2015.
- Created by
- HeatherSwienton
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