It is known as a trench, which is the lower part of the ocean. The deepest trench is the Marina Trench.
The Marianas Trench is the deepest and I believe it is also the longest at 1580 miles.
The Mid-Atlantic Ridge stretches for 10,000 miles (16,000km) And between its ridges lies a huge trench.
The deep undersea canyons occur where and are formed by two of earth's tectonic plates being pushed together and destroyed.
The diagram in the link below illustrates.
The tectonic plates, cause anything such as tsunami's, earthquakes, and volcanic eruptions.
earthquakes, volcanic eruption, landslide and meteorites
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an under water canyon is called a trench
By the movement of tectonic plates.
subduction.
That it was once underwater.
The Grand Canyon is an example of a canyon. -Devyn F. HeY Roquie!!!
Underwater landslides, Underwater volcanic eruptions, and Underwater earthquakes
Starvation Canyon (Searles Canyon), Thomas Range,, Utah US
Palo Duro Canyon is the second largest canyon in the United States. It is only surpassed by the Grand Canyon. Unlike the Grand Canyon, you can drive to the bottom of Palo Duro Canyon. The canyon itself is 120 miles long and up to 20 miles wide. The canyon reaches a depth of 800 feet. There are numerous geological formations in the canyon, the most famous of which is the hoodoo called "The Lighthouse". Georgia O'Keeffe painted several pictures of the canyon as well.
A valley that is underwater.
A valley that is underwater.
It is The Marianas trench it is the deepest underwater canyon and i believe the longest at 1580 miles.The mid atlantic ridge stretches 10,000 miles!
They are created in a process known as, subduction.
It could be called a trench, crevice, ocean ridge, or abyss.
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.
It's often called a trench.
It is known as a trench, which is the lower part of the ocean. The deepest trench is the Marina Trench.
It is known as a trench, which is the lower part of the ocean. The deepest trench is the Marina Trench.
The river had carved a wide canyon through the relatively softer sedimentary rock. Cell phones rely on a direct line of sight, and may not work in a mountain canyon.
That it was once underwater.
The Mariana Trench in the Pacific Ocean which is 10,911 meters deep (35,798 feet or 6.78 miles).