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Why Mariana Trench is so deep?
One reason the Mariana Trench is so deep, he added, is because the western Pacific is home to some of the oldest seafloor in the world—about 180 million years old. Seafloor is formed as lava at mid-ocean ridges. When it’s fresh, lava is comparatively warm and buoyant, riding high on the underlying mantle.
What is the Mariana Trench nickname?
Marianas Trench
Mariana Trench, also called Marianas Trench, deep-sea trench in the floor of the western North Pacific Ocean, the deepest such trench known on Earth, located mostly east as well as south of the Mariana Islands.
Who discovered Mariana Trench?
Everest, the Mariana Trench was first pinpointed in 1951 by the British Survey ship Challenger II. Known since as Challenger Deep, it was not visited for nearly ten years. Jacques Piccard and Don Walsh descended in a submersible called the Trieste, which could withstand over 16,000 pounds of pressure per square inch.
What are facts about the Mariana Trench?
The Mariana Trench is a deep oceanic trench located in the Pacific Ocean.
What caused the Mariana Trench?
The Mariana Trench. This trench was produced by subduction, a process caused by the collision between the continental lithosphere and the oceanic lithosphere, that caused that the oceanic lithosphere is forced down into the mantle, and there, it’s destroyed because it melts with the magma. As a result by this subduction process,…
How did the Mariana Trench get its name?
The Mariana Trench is named for the nearby Mariana Islands (in turn named Las Marianas in honor of Spanish Queen Mariana of Austria, widow of Philip IV of Spain ). The islands are part of the island arc that is formed on an over-riding plate, called the Mariana Plate (also named for the islands), on the western side of the trench.
How was the Mariana Trench became Earth’s deepest point?
One reason the Mariana Trench is so deep, he added, is because the western Pacific is home to some of the oldest seafloor in the world-about 180 million years old. Seafloor is formed as lava at mid- ocean ridges. When it’s fresh, lava is comparatively warm and buoyant, riding high on the underlying mantle.