Igneous rocks and granite

Reference no: EM13190883

1.Which of the following statements is false? Igneous rocks:
1.form from the freezing of either lava or magma.
2.form in great quantities along the mid-ocean ridge.
3.were the first rocks to exist on Earth.
4.are termed phaneritic if they're fine-grained.
5.are coarse-grained if they're intrusive.

2. The dramatic scenery of the Sierra Nevada mountains in California:
1. owes its existence to erosion of a batholith.
2.is the result of a continental hotspot.
3.is especially impressive because of its dark-colored basalt rock.
4.is composed of fine-grained volcanic rock.
5.all of the above are true.

3. A rock is porphyritic. Which of the following words could not be used to describe it?
1.groundmass
2.phenocryst
3.plagioclase
4.andesite
5.pyroclastic

4. Granite:
1.is a phaneritic rock.
2.is felsic in composition.
3.logically could be found in a batholith.
4.is the coarse-grained equivalent of rhyolite.
5.all of the above.

Reference no: EM13190883

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