Q. Which of the following statements with regard to major oceanic trench systems is/are correct?
1.The Mariana Trench contains the deepest known point on Earth, located at the convergent boundary between the Philippine Sea Plate and the Pacific Plate.
2.The Sunda Trench is formed by the subduction of the Pacific Plate directly beneath the North American continental plate.
Select the answer using the code given below:
Answer: A
Notes:
Explanation:
- Statement 1 is correct: The Mariana Trench (containing Challenger Deep at ) forms where the older, denser Pacific Plate subducts beneath the smaller Philippine Sea Plate.
- Statement 2 is incorrect: The Sunda (Java) Trench in the Indian Ocean is formed by the subduction of the Indo-Australian Plate beneath the Sunda/Eurasian Plate, not the Pacific beneath the North American Plate.
