They are called canyons or trenches, depending on what and where they are.
Canyons cut back into the continental shelves or are scoured channels along the shelf surface, some developed during glacial phases when the sea-level was far lower and some of what are now sea-ways, like the English Channel, were river valleys.
Trenches are particularly associated with subduction zones, where the ocean floor plate is being bent down and forced below the continent.
It is varied and includes features such as submarine canyons, atolls, and mid-ocean ridges.
It is varied and includes features such as submarine canyons, atolls, and mid-ocean ridges.
The oceans floor doesn't just keep getting wider instead the ocean floor plunges into deep underwater canyons called deepocean trenches.Where ever deep ocean trenches are there is subduction.
Underwater mountains are called "seamounts," while underwater valleys are referred to as "submarine canyons." Seamounts can rise significantly from the ocean floor, often forming volcanic peaks, while submarine canyons are typically carved by erosion and currents, creating deep, steep-sided features on the ocean floor. Together, these formations contribute to the complex topography of the ocean basin.
what happens is the ocean floor does not just keep spreading.instead, it sinks beneath deep underwater canyons called deep- ocean trenches
The floor of the ocean is called the seabed or ocean floor. It is made up of different features such as abyssal plains, trenches, ridges, and volcanoes.
That it is a topgraphical and the features are a ocean floor.
The continental shelf is the border of any of the continents that extends out and down to the ocean floor. It consists of slopes, rises and underwater canyons.
Submarine Canyons
Submarine Canyons
The Marianas trench .
What causes ocean floor features to form