lithification
The process of transforming loose sediments into sedimentary rocks is known as lithification. Let's explore this concept in detail:
Concept Explanation
Lithification is a geological process that involves the transformation of unconsolidated sediments into solid sedimentary rocks. This process generally includes two main stages: compaction and cementation.
1. Compaction
In the compaction stage, sediment layers accumulate over time, and the weight of the overlying layers causes the sediments beneath to compress. This reduces the pore spaces between the particles.
2. Cementation
During cementation, minerals precipitate from groundwater and bind the sediment particles together. This process ultimately forms solid rock.
Why Other Options are Incorrect
- Solifluction: This process refers to the slow, downslope flow of water-saturated earth material, especially in regions with permafrost. It's unrelated to sedimentary rock formation.
- Weathering: Weathering is the wearing away of rocks and minerals on Earth's surface through mechanical or chemical processes. It doesn't convert sediments into rocks; instead, it creates sediments.
- Mass Wasting: This term describes the movement of soil and rock down a slope due to gravity. It's also unrelated to the actual lithification process.
Conclusion
Given the explanations above, the correct answer is lithification, which is the process of transforming loose sediments into solid sedimentary rocks.
Important Questions from Rocks and Soils
Which of the following statements with reference to Salt Weathering is/are correct? 1. Salt crystallisation is the most effective of all the salt weathering processes. 2. Salt crystal growth is more effective over sedimentary rocks as compared to igneous rocks.
Which of the following statements with reference to Salt Weathering is/are correct?
1. Salt crystallisation is the most effective of all the salt weathering processes.
2. Salt crystal growth is more effective over sedimentary rocks as compared to igneous rocks.- Which one among the following statements regarding igneous rock is correct ?
- Consider the following statements regarding metamorphic rocks :
1. Ortho-metamorphic rocks are formed from igneous rocks.
2. Intense heat of the intruding magmas results in metamorphism of the surrounding rocks, a process known as dynamic metamorphism.
Which of the statements given above is/are correct ? - Which of the following statements about the Black Soils of India is/are correct ?
1. Black Soils cover most of the Deccan Plateau.
2. Also known as 'Regur', they are generally clayey, deep and impermeable.
3. Since they are impermeable, rainfed crops do not grow well in Black Soils.
Select the answer using the codes given below :
