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प्रश्न
Name the types Sedimentary rocks based on agents of formation.
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 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.
- Aeolean Rocks These are formed by the deposition sand accumulation by the wind.
- Marine Rocks These are formed by the deposition of sediments at the ocean floor. These types are Calcarious and Carbonaceous sedimentary Rocks.
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संबंधित प्रश्न
Discuss the importance of rocks for the construction business.
Rocks and minerals play a very important role in our lives.
What problems would you face in their absence?
How are chemically-formed sedimentary rocks formed? Give examples.
Sedimentary rocks are also called stratified rocks. Why?
Classify the following rock: Shale
Classify the following rock: Loess
Give one word for the following.
The outer layer of the earth.
Fill in the blanks
______ rocks are formed by the deposition of shells and skeletons of organism.
What is the basis for the classification of rocks?
Give one term for the following statement:
Formed when mud layers compacted under great pressure composing 80% of this rock.
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Which of the following monuments are built-in igneous rock?
- The Taj Mahal
- Fort Raigad
- The Red Fort
- Ellora Sculpture
Igneous rocks are called primary rocks.
How are sedimentary rocks formed?
Distinguish between:
Internal Processes and External processes.
______ rocks are also known as stratified rocks.
The oldest sedimentary rocks of the world have been identified in ______.
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 |
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
