Question

Match the igneous bodies in Group I with their ages in Group II.
\[ \begin{array}{|l|l|} \hline \textbf{Group I} & \textbf{Group II} \\ \hline P. \ \text{Singhbhum granite} & 1. \ \text{Neoproterozoic} \\ Q. \ \text{Malani rhyolite} & 2. \ \text{Cretaceous} \\ R. \ \text{Deccan volcanics} & 3. \ \text{Permian} \\ S. \ \text{Panjal Traps} & 4. \ \text{Archaean} \\ \hline \end{array} \]

• A. P-3 Q-2 R-2 S-1
• B. P-4 Q-1 R-3 S-4
• C. P-4 Q-3 R-1 S-2
• D. P-3 Q-4 R-3 S-1

Hint:

When studying igneous bodies, knowing the geological time periods they correspond to is key for understanding Earth's tectonic and volcanic history.

Answer 1

The Correct Option is A

Step 1: Understanding the question.
The question asks to match igneous bodies with their respective ages. These geological bodies are key to understanding the stratigraphy of the Indian subcontinent.
Step 2: Analyzing the options.
(A) P-3 Q-2 R-2 S-1: Correct — Singhbhum granite dates to the Archaean, Malani rhyolite to the Cretaceous, Deccan volcanics to the Permian, and Panjal traps to the Neoproterozoic.
(B) P-4 Q-1 R-3 S-4: This combination is incorrect because the ages do not match correctly with the known ages of these bodies.
(C) P-4 Q-3 R-1 S-2: This is incorrect as the Deccan volcanics and Panjal traps are mismatched.
(D) P-3 Q-4 R-3 S-1: This option is incorrect because the ages of the Malani rhyolite and Singhbhum granite are swapped.
Step 3: Conclusion.
The correct answer is (A) P-3 Q-2 R-2 S-1, as it matches the igneous bodies with their correct ages.