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प्रश्न
Distinguish between the following:
Sills and Dykes.
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उत्तर
| Sills | Dykes |
| The collection of magma between layers of rocks is called a sill. | The fillings of magma in the cracks or fissures of rocks are called dykes. |
| Horizontal intrusions of magma. | Vertical or steeply inclined intrusions of magma. |
| Form between existing layers of rock. | Cut across existing rock layers. |
| Magma spreads sideways and solidifies in sheets. | Magma moves upward through cracks and hardens. |
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