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Consider the following statements:
1. A laccolith is a large blister or igneous mound with a dome-shaped upper surface and a level base fed by a pipe-like conduit from below
2. A lopolith is another variety of igneous intrusion with a saucer shape
Which of these statements is/are correct?
  • a)
    1 only
  • b)
    2 only
  • c)
     Neither 1 nor 2
  • d)
    Both 1 and 2 
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements:1. A laccolith is a large blister or...
Statement 1: A laccolith is a large blister or igneous mound with a dome-shaped upper surface and a level base fed by a pipe-like conduit from below.

Statement 2: A lopolith is another variety of igneous intrusion with a saucer shape.

Explanation:

Laccoliths:
A laccolith is a type of igneous intrusion formed when magma is injected into the Earth's crust but does not reach the surface. Instead, it spreads horizontally between layers of sedimentary rock, causing the overlying rock layers to arch upward and form a dome-shaped top. The magma chamber that feeds the laccolith is connected to the surface by a pipe-like conduit, allowing the magma to flow into the chamber and create the blister-like shape. As the magma cools and solidifies, it forms a hardened dome-shaped mass of igneous rock.

Lopoliths:
A lopolith is another type of igneous intrusion that has a saucer-shaped or concave upper surface and a level base. It is formed when a large volume of magma is injected into the Earth's crust and spreads horizontally, but instead of forming a dome-shaped top like a laccolith, it forms a basin-like structure. The overlying rock layers are pushed upward, creating a depression or basin shape with the magma chamber at the center. As the magma cools and solidifies, it forms a concave mass of igneous rock.

Conclusion:
Both statements are correct:
- Statement 1 correctly describes a laccolith as a blister or mound with a dome-shaped upper surface and a level base fed by a pipe-like conduit from below.
- Statement 2 correctly describes a lopolith as another variety of igneous intrusion with a saucer shape.
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Consider the following statements:1. A laccolith is a large blister or...
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Consider the following statements:1. A laccolith is a large blister or igneous mound with a dome-shaped upper surface and a level base fed by a pipe-like conduit from below2. A lopolith is another variety of igneous intrusion with a saucer shapeWhich of these statements is/are correct?a)1 onlyb)2 onlyc)Neither 1 nor 2d)Both 1 and 2Correct answer is option 'D'. Can you explain this answer?
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