Respuesta :
Answer:
abyssal plain
Explanation:
more than 75 percent of the ocean floor is completely flat. These flat areas are abyssal plains. Many abyssal plains lie more than 3,000 meters (10,000 feet) below the ocean's surface. These immense, empty areas are level because sediments from the ocean have filtered down upon them for millions of years, burying the rocks below.
Abyssal plain terms describes the deepest part of the ocean floor.
What is abyssal plain?
The abyssal plain defined as to a flat region of the ocean floor, oftenly at the base of a continental rise, where slope is less than 1:1000. It shows the deepest and flat part of the ocean floor lying between 4000 and 6600 m deep in the United State Atlantic Margin.
It is composed mainly of basalt, a dark colored volcanic rock rich in iron- and magnesium silicate minerals.
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