Correct Option
The correct option is 2 only
Explanation
Volcanic landforms are classified into extrusive and intrusive forms based on where the magma cools. Intrusive landforms are created when magma cools within the Earth's crust. Dykes are a specific type of discordant intrusive igneous rock formation.
Statement-wise Analysis
- Statement 1 is Incorrect: When magma forces its way through cracks and fissures in the existing rock, it may solidify almost perpendicular to the ground. These vertical or near-vertical, wall-like structures are known as dykes.
- Statement 2 is Correct: Saucer-shaped, concave-to-the-sky intrusive bodies are known as Lapoliths. Dykes are characterized by their wall-like, vertical structure, not a saucer shape.
- Statement 3 is Incorrect: Dykes are commonly found in the Deccan Traps region, particularly in Western Maharashtra. They are widely considered to be the feeders for the massive volcanic eruptions that formed the Deccan Traps flood basalts.
Key Takeaway: Dykes are vertical, wall-like intrusive volcanic landforms formed perpendicular to the bedding planes, whereas Lapoliths are saucer-shaped and Sills are horizontal sheet-like intrusions.