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Unformatted text preview: + Correct: rate of cooling of the magma or lava 9. When the minerals in an igneous rock cannot be identified, the composition can be estimated based on the percentage of p- Incorrect: true 10. An igneous rock that consists of fine shards of intertwined glass is __________. + Correct: pumice 11. Rocks that contain voids left by gases that escape as lava solidifies are said to exhibit a(n) __________ texture. + Correct: vesicular 12. In a rock with a porphyritic texture, the smaller crystals are referred to as __________. + Correct: groundmass 13. In a rock with a porphyritic texture, the large crystals are referred to as __________. + Correct: phenocrysts 14. What is the likely texture of an igneous rock that formed in a thin, shallow intrusive body?- Incorrect: coarse-grained 15. Igneous rock originates when hot, molten material called __________ cools and crystallizes. + Correct: magma...
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This note was uploaded on 12/25/2010 for the course ESC 1000 taught by Professor Faculty during the Fall '10 term at FAU.
- Fall '10