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Which of the following statements are correct?
1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks
2. Vast majority of sedimentary rocks are nonclastic
3. Shale is the fine-grained clastic sedimentary rock
  • a)
    1 only
  • b)
    2 and 3
  • c)
    1 and 3
  • d)
    1, 2 and 3 
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following statements are correct?1. Intrusive igneous roc...
Vast majority of sedimentary rocks are clastic. Examples of clastic sedimetary are sandstones, conglomerates, clay rocks, shales, loess etc. Shale is the finest grained clastic sedimentary rock. 
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Most Upvoted Answer
Which of the following statements are correct?1. Intrusive igneous roc...
Statement 1: Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks.
This statement is correct. Intrusive igneous rocks form beneath the Earth's surface when magma cools and solidifies slowly. The slow cooling allows for the growth of larger mineral crystals. On the other hand, extrusive igneous rocks form on the Earth's surface when lava erupts and cools quickly. The rapid cooling prevents the growth of large crystals, resulting in fine-grained or glassy textures.

Statement 2: The vast majority of sedimentary rocks are nonclastic.
This statement is incorrect. Sedimentary rocks can be classified into two main types: clastic and nonclastic. Clastic sedimentary rocks are formed from the accumulation of fragments or grains of pre-existing rocks, while nonclastic sedimentary rocks are formed from the precipitation or accumulation of minerals or organic matter. Both types are common in the Earth's crust, and the proportion of each varies depending on the geological setting.

Statement 3: Shale is the fine-grained clastic sedimentary rock.
This statement is correct. Shale is a fine-grained sedimentary rock that is composed of clay minerals and other fine-grained particles. It forms from the compaction and cementation of mud or clay-rich sediments. Shale is the most abundant sedimentary rock and is often associated with the deposition of fine-grained sediment in quiet or low-energy environments such as lakes, swamps, or deep marine basins.

In summary, the correct statements are:
1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks.
3. Shale is the fine-grained clastic sedimentary rock.
Therefore, the correct answer is option 'C' (1 and 3).
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Which of the following statements are correct?1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks2. Vast majority of sedimentary rocks are nonclastic3. Shale is the fine-grained clastic sedimentary rocka)1 onlyb)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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Which of the following statements are correct?1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks2. Vast majority of sedimentary rocks are nonclastic3. Shale is the fine-grained clastic sedimentary rocka)1 onlyb)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements are correct?1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks2. Vast majority of sedimentary rocks are nonclastic3. Shale is the fine-grained clastic sedimentary rocka)1 onlyb)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements are correct?1. Intrusive igneous rocks tend to have larger mineral crystals than extrusive igneous rocks2. Vast majority of sedimentary rocks are nonclastic3. Shale is the fine-grained clastic sedimentary rocka)1 onlyb)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
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