How can ocean basins change in size?
Click to see full answer
Accordingly, how do ocean basins evolve?
Chapter 3 - The evolution of ocean basins Ocean basins form initially by the stretching and splitting (rifting) of continental crust and by the rise of mantle material and magma into the crack to form new oceanic lithosphere. Among the major ocean basins, the Atlantic has the simplest pattern of ocean-floor ages.
Likewise, what effect might tectonic plate movement have on the size of an ocean basin? As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
Also to know is, what ocean basin is expanding?
Ancient ocean crust is sinking back into the mantle along subduction zones associated with deep sea trenches—such as along the margins of the Pacific Ocean (discussed below). In contrast, the relatively smaller Atlantic Ocean basin is expanding (slowly growing wider a few inches each year).
What are the four main ocean basins which is the largest and which is the smallest?
The four major ocean basins are the Pacific Ocean, Atlantic Ocean, Indian Ocean, and Arctic Ocean. The Pacific Ocean is the largest and has the greatest depth. The Atlantic Ocean is about half the size of the Pacific and not quite as deep.