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Which process is necessary for the formation of igneous rocks?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Which igneous rock has a vesicular texture and contains the minerals potassium feldspar and quartz?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Obsidian's glassy texture indicates that it formed
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Which intrusive igneous rock could be composed of approximately 60% pyroxene, 25% plagioclase feldspar, 10% olivine, and 5% amphibole?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Which texture best describes an igneous rock that formed deep underground?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Which characteristic provides the best evidence that this pegmatite solidified deep underground?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Which process could lead directly to the formation of pumice rock?
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
Mineral crystals of quartz, biotite mica, and amphibole are produced primarily by the
explosive eruption of lava from a volcano
gabbro
very coarse texture
coarse grained
pumice
cooling and solidification of magma
quickly, on Earth's surface
solidification
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