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प्रश्न
What are the causes of metamorphism?
उत्तर
Main causes are great temperature and pressure beneath the earth’s crust, which changes the original texture and form of the rocks into dense, crystalline and fine grained rocks.
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संबंधित प्रश्न
Classify the following rocks by selecting the correct option given below:
gypsum
Explain this term associated with rocks: Extrusive Igneous Rocks
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Fill in the blanks
______ rocks cover wide area in Peninsular India and Columbia, the Snake Plateau of the U.S.A.
State the properties of metamorphic rocks.
Give one term for the following statement:
Sheet like body of igneous rock.
Give an example of a Plutonic rock.
Give reasons for the following
Rocks are of great economic significance.
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
Choose the incorrect statement from the following.
Mention a few specimens of magnificent rock-cut architecture in India?
This is the storehouse of rocks.
Oldest Sedimentary rocks of the world has been identified in Green land.
______ are chemical substances which exist in nature.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
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.
| Group A | Group B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
