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प्रश्न
Explain the formation of sedimentary rocks on the basis of agents of formation.
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उत्तर
There are five main types of rocks on the basis of agents of formation:
- Riverine Rocks These are formed by the sediments deposited by running water or a river.
- Lacustrine Rocks These are formed by the deposition of silt, etc., on the bed of lakes.
- Glacial Rocks These are formed by the debris carried off and deposited by glaciers.
- Aeolian Rocks These are formed by the deposition of sand accumulation by the wind.
- Marine Rocks These are formed by the deposition of sediments at the ocean floor. These types are calcareous and carbonaceous sedimentary rocks.
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संबंधित प्रश्न
Discuss the importance of rocks for the construction business.
Classify the following rocks by selecting the correct option given below:
granite
How do acidic igneous rocks differ from basic igneous rocks?
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Distinguish between the following:
Calcarious and Carbonacious rocks.
State the chief characteristics of metamorphic rocks.
How are sedimentary and igneous rocks formed?
Distinguish between Regional and Contact metamorphism.
Classify the following rock: Loess
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Igneous rocks of deep seated origin.
How is Plutonic rock formed?
Give reasons for the following
Extrusive rocks generally have small crystals.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Choose the incorrect statement from the following.
______ into slate caused by thermal metamorphism.
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.
