What is the last step in the formation of new oceanic crust?

Magma rises from the earth's mantle.

The erupting lava causes the original seafloor to push outward, creating a mid-ocean ridge.

Tectonic plates must move apart.

Underwater sea vents cause currents that break off the continental crust, forming oceans in between.

Question

Geography

Mark Stevenson

5 April, 05:59

What is the last step in the formation of new oceanic crust?

Magma rises from the earth's mantle.

The erupting lava causes the original seafloor to push outward, creating a mid-ocean ridge.

Tectonic plates must move apart.

Underwater sea vents cause currents that break off the continental crust, forming oceans in between.

+1

Answers (2)

Know the Answer?

Lillie Ruiz · Answer 1

Underwater sea vents cause currents that break off the continental crust, forming oceans in between.

I think? I Apologize if it's incorrect. I just put the in order by memory

Porter Ramirez · Answer 2

The answer is 1 magma rises from the earth's mantle.