In what way do tuff and volcanic breccia differ from other igneous rocks such as
ID: 152427 • Letter: I
Question
In what way do tuff and volcanic breccia differ from other igneous rocks such as granite and basalt?
1)Tuff and volcanic breccia do not consistently form on Earth’s surface every time, unlike granite, which is always intrusive, and basalt, which is always intrusive.
2)Tuff and volcanic breccia consistently have glassy textures unlike granite, which is always phaneritic, and basalt, which is always aphanitic.
3)Tuff and volcanic breccia do not consistently belong to a single textural category, unlike granite, which is always phaneritic, and basalt, which is always aphanitic.
4)Tuff and volcanic breccia do not consistently contain the same particle sizes, unlike granite, which always has particles large enough to be seen with the naked eye, and basalt, which has particles that cannot be differentiated from each other.
5)Tuff and volcanic breccia do not consistently belong to a single compositional category, unlike granite, which is always felsic, and basalt, which is always mafic.
Explanation / Answer
The ways in which tuff and volcanic breccia differ from other igneous rocks such as granite and basalt:
3. Tuff and volcanic breccia do not consistently belong to a single textural category, unlike granite, which is always phaneritic, and basalt, which is always aphanitic.
4. Tuff and volcanic breccia do not consistently contain the same particle size, unlike granite, which always has particles large enough to be seen with the naked eye, and basalt, which has particles which cannot be differentiated from each other.
5. Tuff and volcanic breccia do not consistently belong to a single compositional category, unlike granite, which is always felsic, and basalt, which is always mafic.
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