GEOLOGY

Detailed explanation-1: -An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3, 000 metres (9, 800 ft) and 6, 000 metres (20, 000 ft). Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface.

Detailed explanation-2: -Abyssal plains Continuing your journey across the ocean basin, you would descend the steep continental slope to the abyssal plain. At depths of over 10, 000 feet and covering 70% of the ocean floor, abyssal plains are the largest habitat on earth.

Detailed explanation-3: -The term ‘abyssal plain’ refers to a flat region of the ocean floor, usually at the base of a continental rise, where slope is less than 1:1000. It represents the deepest and flat part of the ocean floor lying between 4000 and 6500 m deep in the U.S. Atlantic Margin.

Detailed explanation-4: -The deepest part of the ocean is called the Challenger Deep and is located beneath the western Pacific Ocean in the southern end of the Mariana Trench, which runs several hundred kilometers southwest of the U.S. territorial island of Guam. Challenger Deep is approximately 10, 935 meters (35, 876 feet) deep.

Detailed explanation-5: -Abyssal plains are remarkably flat, having a slope of less than 1:1, 000 (or less than 1 m change in height over a distance of 1 km), because of the thick sediment drape that covers and subdues most of the underlying basement topography.