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Question
Distinguish between the following pair of terms associated with vulcanicity:
Acidic Lava and Basic Lava
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Solution 1
| Acidic Lava | Basic Lava |
| It is rich in silica and poor in iron and magnesium. | It is poor in silica and rich in iron and magnesium. |
Solution 2
Acidic Lava and Basic lava
Acidic Lava :
- It is a highly viscous lava.
- It is light coloured like granite.
- It has a low density.
- It has a high percentage of silica.
- It flows slowly and results in steep-sided cones or lava domes.
Basic Lava :
- It is highly fine and thin.
- It is dark coloured like Basalt.
- It has a high density.
- It is poor in silica.
- It flows rapidly as thin sheets resulting in shield cones.
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| 7. A Phaccolith | (g) Upland of Britain is France |
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