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प्रश्न
Give a detailed account of lithiflcation of sedimentary rocks.
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उत्तर
Lithification means solidification. The loose material carried on by water, wind and ice is deposited slowly in different layers one upon another. Gradually the deposited sediments become solid and hard due to pressure and temperature. Evaporation results in the loss of water within the sediments and these are compacted and cemented. Compaction takes place by increasing weight and pressure of over lying sediments e.g. sand is converted to sandstone. Cementation takes place by bonding of compacted sediments by natural elements like calcium compounds, silica and iron with a property to bind the loose materials to solid state.
संबंधित प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Classify the following rocks by selecting the correct option given below:
sandstone
Explain this term associated with rocks: Fossil fuels
Distinguish between rocks and minerals.
How are sedimentary rocks classified on the basis of their formation?
In what type of rocks do you find fossils and why?
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Clay
Give one example of an area of: Metamorphic rocks,
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Why are the Igneous Rocks called Primary Rocks?
How is Plutonic rock formed?
Which types of rocks are predominantly found at the following locations?
- Central Maharashtra
- South Konkan
- Vidarbha
______ is known as the primary rocks.
Volcanic mountains are covered with sedimentary rocks.
Kola sample title is located in ______.
The world Igneous is derived from the Latin word ______ meaning ______.
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.
