How was the Mariana Trench became the Earth's deepest point?
Why is the Mariana Trench 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.
What is the lowest point in the Mariana Trench called?
- The Challenger Deep is the lowest point in the Mariana Trench, a gap between tectonic plates that stretches 1,500 miles along the western Pacific, and is thought to be the deepest chasm in all the world's oceans. At the bottom the pressure reaches over 15,000 pounds per square inch.
Is the Mariana trench deeper than the Grand Canyon?
- It is five times longer than the Grand Canyon and includes some 78,956 square miles (204,500 km2) of virtually unexplored underwater terrain. Sirena Deep, about 6.6 miles beneath the surface, is the deepest point of the Mariana Trench Marine National Monument.
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