Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches. Oceanic trenches are prominent long, narrow topographic Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic trenches are a feature of the Earth's distinctive plate tectonics.

Convergent boundary: the plates collide, and eventually the denser one slides underneath the lighter one, a process known as subduction.This type of interaction can take place between an oceanic and an oceanic crust, creating a so-called oceanic trench.It can also take place between an oceanic and a continental crust, forming a mountain range in the continent like the …

Some trenches are created as a result of erosion by running water or by glaciers (which may have long since disappeared). Others, such as rift valleys or oceanic trenches, are created by geological movement of tectonic plates.Some oceanic trenches include the Mariana Trench and the Aleutian Trench. The former geoform is relatively deep (approximately 10 kilometres (6.2 …

The Philippine Trench (also Philippine Deep, Mindanao Trench, and Mindanao Deep) is a submarine trench to the east of the Philippines.The trench is located in the Philippine sea of the western North Pacific Ocean and continues NNW-SSE. It has a length of approximately 1,320 kilometres (820 miles) and a width of about 30 km (19 mi) from the center of the Philippine …

The Mariana Trench or Marianas Trench is located in the western Pacific Ocean about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench Challenger Deep. If Mount Everest were hypothetically placed into the trench at this point, its peak would still be underwater by more than 2 kilometres (1.2 mi).. At the bottom of the trench, the water …

Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries.Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction …

Virgin Oceanic (originally Virgin Aquatic) is an undersea leisure venture of Newport Beach, CA businessman Chris Welsh and Sir Richard Branson, part of Sir Richard Branson's Virgin Group.The brand was first reported in a 2009 Time Magazine interview. The flagship service provided by Virgin Oceanic was intended to take visitors to the deepest parts of the ocean; …

The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) is a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur. The Ring of Fire is a horseshoe-shaped belt about 40,000 km (25,000 mi) long and up to about 500 km (310 mi) wide.. The Ring of Fire includes the Pacific …

The Earth's mantle is a layer of silicate rock between the crust and the outer core.Its mass of 4.01 × 10 24 kg is 67% the mass of the Earth. It has a thickness of 2,900 kilometres (1,800 mi) making up about 84% of Earth's volume. It is predominantly solid, but in geological time it behaves as a viscous fluid.Partial melting of the mantle at mid-ocean ridges produces oceanic crust, and ...

The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches sea level, and exists in long, narrow, topographic V-shaped depressions.. The cumulative area occupied by the 46 individual hadal habitats worldwide is less than 0.25% of the world's seafloor, yet trenches account for over 40% of the ocean's depth range. Most hadal …