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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
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
Classify the following rocks by selecting the correct option given below:
Gneiss
How are sedimentary rocks formed?
Name the three stages of lithification of Sedimentary rocks.
What are the causes of metamorphism?
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Fill in the blanks
______ rocks are formed by the deposition of shells and skeletons of organism.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one term for the following statement:
Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Distinguish between Intrusive and Extrusive Rocks
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Distinguish between Metamorphic rock and sedimentary rock.
The two types of Intrusive Igneous rocks are ______.
What is lava?
What is 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.
