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प्रश्न
Distinguish between Regional and Contact metamorphism.
उत्तर
Regional metamorphism When metamorphism of bed rocks takes place over a very large area, it is called Regional metamorphism. It is usually caused by the movement of the earth’s crust. Contact metamorphism when it takes place over a small area, it is called Local Metamorphism or Contact Metamorphism. It commonly occurs when hot magma comes in contact with other rocks.
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संबंधित प्रश्न
Classify the following rocks by selecting the correct option given below:
schist
Explain the structure of the earth’s interior?
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Name any two chief characteristics of Igneous Rocks.
What is the main characteristics of Basic Igneous Rocks?
Which rocks are associated with ores of metals?
Mention any two chief characteristics of Sedimentary Rocks.
Name the types Sedimentary rocks based on agents of formation.
Classify the following rock: Quartzite
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
Fill in the blanks
______ rocks cover wide area in Peninsular India and Columbia, the Snake Plateau of the U.S.A.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
This is the storehouse of rocks.
An aggregate of minerals on the Earth’s Crust is called ______.
Which Soils are formed by the weathering of metamorphic rocks?
______ are chemical substances which exist in nature.
| A | B | ||
| 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.
