Question

Which one of the following statements is CORRECT?

• A. Salt dome traps are abundant in the Upper Assam Basin
• B. Fold and thrust related traps are common in the Mumbai Offshore Basin
• C. Limestone is the predominant reservoir rock in the Cambay Basin
• D. Sandstone is the reservoir rock in the Krishna-Godavari Basin

Hint:

The Krishna-Godavari Basin is famous for its gas reserves, and sandstone serves as the main reservoir rock in this region.

Answer 1

The Correct Option is D

Let’s analyze each statement:
- (A) Salt dome traps are abundant in the Upper Assam Basin: While salt domes can form in the Upper Assam Basin, this is not the most common type of trap. The basin is known for oil and gas deposits in both structural and stratigraphic traps, but salt domes are not as prevalent as in other regions.
- (B) Fold and thrust related traps are common in the Mumbai Offshore Basin: The Mumbai Offshore Basin is known for a variety of hydrocarbon traps, including fault-block traps, but fold and thrust related traps are not the most common. The Mumbai Basin has been primarily characterized by structural traps related to folding and faulting.
- (C) Limestone is the predominant reservoir rock in the Cambay Basin: The Cambay Basin has significant petroleum reserves, but the predominant reservoir rocks are not limestone. In this basin, sandstones are the more common reservoir rocks, although there may be some limestones present as well.
- (D) Sandstone is the reservoir rock in the Krishna-Godavari Basin: This statement is correct. The Krishna-Godavari Basin is primarily known for its large gas reserves, and sandstone is the most common reservoir rock in this basin. The basin also contains important oil and gas fields where sandstone serves as the main reservoir rock.
Thus, the correct answer is (D) Sandstone is the reservoir rock in the Krishna-Godavari Basin.