Correct Option
The correct option is 2 and 3 only.
Explanation
Submarine canyons are deep, steep-sided valleys cut into the seabed of the continental slope, often extending onto the continental shelf. These features are part of the continental margin relief and are distinct from tectonic features like mid-oceanic ridges.
Statement-wise Analysis
- Statement 1 is Incorrect: The Hudson Canyon is a submarine canyon, which is an erosional feature resembling a gorge or valley. It is not a mid-oceanic ridge, which is an underwater mountain system formed by plate tectonics at divergent boundaries.
- Statement 2 is Correct: The Hudson Canyon is located in the Atlantic Ocean. It is situated off the eastern coast of the United States, specifically off the coasts of New York and New Jersey.
- Statement 3 is Correct: The canyon acts as a seaward extension of the Hudson River valley. It begins near the mouth of the Hudson River, cuts across the continental shelf, and extends down the continental slope to the continental rise.
Key Takeaway
The Hudson Canyon is the largest submarine canyon off the East Coast of the United States, extending from the Hudson River mouth into the Atlantic Ocean. It is a feature of the continental margin (shelf and slope), not a mid-oceanic ridge.