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प्रश्न
Name the types Sedimentary rocks based on 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 on 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
Write True or False. Rewrite the false statement correctly :
Rocks are used in construction industries.
What is crust?
Classify the following rocks by selecting the correct option given below:
limestone
What are metamorphic rocks?
Describe the process that leads to exfoliation.
Explain this term associated with rocks: Extrusive Igneous Rocks
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
State the chief characteristics of metamorphic rocks.
Classify the following rock: Slate
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one term for the following statement:
Formed when mud layers compacted under great pressure composing 80% of this rock.
How are igneous rocks formed?
The world Igneous is derived from the Latin word ______ meaning ______.
Explain the different types of sedimentary rocks.
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.
| A. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
