| 1. | A similar situation with igneous rocks occurs when xenoliths are found.
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| 2. | Deformational events are often also associated with volcanism and igneous activity.
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| 3. | By definition rock formed of solidified magma is called igneous rock.
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| 4. | These igneous deposits blanketed the region north of the Yosemite region.
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| 5. | Most types of igneous rocks display some degree of porphyritic texture.
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| 6. | Nephelinite is an example of a silica-undersaturated igneous rock.
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| 7. | Silica-saturated igneous rocks fall in between these two classes.
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| 8. | In slowly cooled intrusive igneous rocks, pigeonite is rarely preserved.
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| 9. | Labradorite is the principal component of the igneous rock type anorthosite.
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| 10. | Examples of aphanitic igneous rock include basalt, andesite and rhyolite.
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