The Ocean Floor Is Made Of

As compared to freshwater saline ocean water is and therefore provides support to floating objects.

The ocean floor is made of. The continental shelf is the underwater edge of the continent. Mountains plains channels canyons exposed rocks and sediment covered areas. Most of the igneous rocks within oceanic abyssal plains are denser. Plate tectonics and the ocean floor bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics.

The ocean floor has the same general character as the land areas of the world. Shallow parts of the ocean floor that are made of continental crust and a thick wedge of sediment. There are four basic types of sediment of the sea floor. It is composed of several layers not including the overlying sediment.

In the deepest parts of the. The ocean floor is made up of various landscapes including mountains valleys and plains. The outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle. The deepest segments of the ocean floor are found covered by clay and the skeletal remains of microplankton.

It extends from the shore to a depth of about 600 feet and has a gentle slope. Then at what bearing are you proceeding is the main issue. 2 biogenous material is the sediment made up of the hard parts of sea animals that accumulate on the bottom of the ocean. The part of the ocean floor that is under deep water beyond the continent margin and that is composed of oceanic crust and a thin layer of sediment.

Most of the seafloor is covered by sediments that average 350 m thick. If you could sit right under a ridge you would see rocks from the earth s mantle the hot layer underlying the crust melting and percolating up toward the seam between the two plates. 1 terrigenous describes the sediment derived from the materials eroded by rain rivers glaciers and that which is blown into the ocean by the wind such as volcanic ash. The lack of weathering and erosion in most areas however allows geological processes to be seen more clearly on the seafloor than.

If the bearing is to the centre of the earth you are through the core of the earth almost at the centre. The topmost layer about 500 metres 1 650 feet thick includes lavas made of basalt that is rock material consisting largely of plagioclase feldspar and pyroxene. Oceanic plates are continuously forged at mid ocean ridges an undersea mountain chain created where the edges of two plates are separating. So even the centre is not reached.

These vary from oozes made of carbonate from foraminiferal and calcareous phytoplankton and some silica that has settled through the water column.