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Major active fractures zones worldwide are in the orange shaded areas perpendicular to the black lines of the mid-ocean ridges of the major oceanic plates. Fracture zones are common features in the geology of oceanic basins. Globally most fault zones are located on divergent plate boundaries on oceanic crust.
An oceanic or submarine plateau is a large, relatively flat elevation that is higher than the surrounding relief with one or more relatively steep sides. [1] There are 184 oceanic plateaus in the world, covering an area of 18,486,600 km 2 (7,137,700 sq mi) or about 5.11% of the oceans. [2]
Map showing Earth's principal tectonic plates and their boundaries in detail. These plates comprise the bulk of the continents and the Pacific Ocean.For purposes of this list, a major plate is any plate with an area greater than 20 million km 2 (7.7 million sq mi)
The ocean floor of the Pacific Ocean is composed of nine oceanic tectonic plates, all located in the southeast where the East Pacific Rise separates the Pacific plate from the Antarctic, Juan Fernández, Nasca, Easter, Galápagos, Cocos, Rivera, Juan de Fuca plates. [13]
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3,000 meters (9,800 ft) and 6,000 meters (20,000 ft).Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains are among the flattest, smoothest and least explored regions on Earth. [1]
Relief map with the East Pacific Rise (shown in light blue), extending south from the Gulf of California. The East Pacific Rise (EPR) is a mid-ocean rise (usually termed an oceanic rise and not a mid-ocean ridge due to its higher rate of spreading that results in less elevation increase and more regular terrain), at a divergent tectonic plate boundary, located along the floor of the Pacific Ocean.
The Nazca plate or Nasca plate, [2] named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. The ongoing subduction , along the Peru–Chile Trench , of the Nazca plate under the South American plate is largely responsible for the Andean orogeny .
The Pacific plate and other principal plates of Earth's lithosphere. The Pacific plate is an oceanic tectonic plate that lies beneath the Pacific Ocean.At 103 million km 2 (40 million sq mi), it is the largest tectonic plate.