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प्रश्न
State the chief characteristics of metamorphic rocks.
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उत्तर
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They are harder and more compact than their original form.
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Most of them are impermeable; they do not allow water to percolate through them.
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They do not have fossils because fossils in sedimentary rocks are destroyed during metamorphism.
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They are formed due to a change in texture and composition of pre-existing rocks.
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New minerals are formed during the process of metamorphism.
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संबंधित प्रश्न
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______ is known as the primary rocks.
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Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
