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प्रश्न
Distinguish between Thermal metamorphism and Dynamic metamorphism.
उत्तर
Thermal metamorphism : When the transformation of the original rock takes place principally because of the influence of high temperature, the rock is said to be caused through Thermal metamorphism. For example, graphite (from coal) and slate (from clay). The heat may result from the intrusion of hot magma or from the friction of moving rock layers. It may also occur due to chemical changes.
Dynamic metamorphism : When the transformation of the original rock takes place mainly because of the influence of pressure at a great depth within the earth’s crust, it is known as Dynamic Metamorphism.
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संबंधित प्रश्न
Fill in the blank
Conglomerate is an example of _____________ rocks.
Classify the following rocks by selecting the correct option given below:
marble
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Explain this term associated with rocks: Metamorphism
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How are igneous rocks classified on the basis of their chemical composition?
What is metamorphism?
What physical agents are involved in the sedimentary rocks?
Classify the following rock: Marble
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Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.
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What are the characteristics of Sedimentary rocks?
State the characteristics of Metamorphic rocks.
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 |
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.
