Question

A seamount chain is Choose one:

A. an elongate, relatively narrow series of basaltic volcanoes that traverse the ocean floor, rising to a relief of 2 to 2.5 km above the surrounding abyssal plain.
B. an elongate arc where ocean depths reach as much as 12 km, bordering chains of volcanoes at subduction zones.
C. a region of oceanic crust where Earth's magnetic field appears to be either slightly stronger or weaker than expected.
D. an elongate series of former volcanic islands that poke up from the ocean floor. esc

Answer 1

Option (D)

Step-by-step explanation:

Sea mount chains are usually defined as a large and elongated, distinct geological landforms that are formed below the ocean surface. These are typically formed from the ancient extinct underwater volcanoes, that are basaltic in origin. They rise up from the ocean floor upto various heights but the waves in the oceans continuously weathers, erodes and configures them. These are basically formed in the spreading zones and the mid oceanic ridges.

Thus, the correct answer is option (D).

Answer 2

elongate series of former volcanic islands that poke up from the ocean floor

Step-by-step explanation:

• A seamount is a series of mountain ranges that rise's from the oceanic floor and does not reach the surface of the water and hence it's not an island. Usually formed by extinct volcanoes and having heights of 4000 meters.

• Because they form a large chain and have large numbers, they are found in every oceanic basin.

• Mostly found around the Hawaiian islands and are volcanic in origin.