Advertisements
Advertisements
प्रश्न
Give a detailed account of lithiflcation of sedimentary rocks.
Advertisements
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
Why is coal hard and chunky?
Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Mention any two characteristics of Sedimentary Rocks.
Distinguish between the following:
Plutonic and Volcanic rocks.
State the types of rocks for the formation of which the following process is involved.
Decomposition of organic matter at different stages and over different periods of time.
Distinguish between Thermal metamorphism and Dynamic metamorphism.
What are metamorphic rocks?
Classify the following rock: Coal
Classify the following rock: Granite
Classify the following rock: Basalt
Classify the following rock: Graphite
Why fossils are preserved in Sedimentary and not in Igneous rocks?
Give reasons for the following
Extrusive rocks generally have small crystals.
Which types of rocks are predominantly found at the following locations?
- Central Maharashtra
- South Konkan
- Vidarbha
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Explain the type of Igneous Rocks.
______ rocks are also called Primary rocks.
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.
