These are called Ocean ridges. The most noted one is the mid-atlantic ridge.
That is a glacier. Glaciers form from compacted snow that has accumulated over time and flows downhill under the force of gravity.
The crust under the ocean is typically about 3 to 5 miles (5 to 8 kilometers) deep.
Yes, the Grand Canyon was once submerged under an ocean millions of years ago.
The slope is the steep incline at the edge of the continental shelf that descends into the ocean depths. The continental shelf is a gently sloping, submerged portion of a continent that extends from the shoreline to the shelf break where the slope begins.
Crust under the oceans is called oceanic crust.
ocan
Trenches
Continental shelf
That is a glacier. Glaciers form from compacted snow that has accumulated over time and flows downhill under the force of gravity.
An ancient under sea valley carved in the ocean floor is known as a canyon, usually given the name of the contributory river on the land. such as the Hudson Canyon, or the Clutha Canyon.
If you are referring to Death Valley, California. It does not get flooded because there is a large mass of rock in the form of mountains and continental crust between the ocean and the valley. All that rock is quite capable of keeping the ocean from seeping in.
The Arkansas river valley was formed by streams of water on when the state of Arkansas was under the ocean 400 billion years ago
It is formed by an upwelling of hot mantle material under the valley (which has elevated the land) and then split it as the hot mantle moves sideways away form the center of upwelling. This results in volcanoes and a Graben fault system (a rift valley) above the upwelling. Essentially the Rift Valley is the start of a new ocean - the two sides of Africa are splitting apart.
go under the valley of eureka
If there is an earthquake under an ocean, tsunami is possible.
Under the ground or ocean,it is mostly under in the ocean
Ocean Basin