The Ocean Floor Is Made Of Mostly

Life in the ocean depends on phytoplankton mostly microscopic organisms that float at the surface and through photosynthesis produce about half of the world s oxygen.

The ocean floor is made of mostly.

The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. In the deepest parts of the. An ocean is a body of water that composes much of a planet s hydrosphere. What is the type of crust formed on the ocean floor.

Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet. The concept of seafloor spreading was supported by magnetic polarity stripes on the ocean floor. The crust overlies the solidified and uppermost layer of the mantle the crust and the solid mantle layer together constitute oceanic lithosphere. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.

These vary from oozes made of carbonate from foraminiferal and calcareous phytoplankton and some silica that has settled through the water column. Silicates mostly compounds made of silicon and oxygen are the most abundant rocks and minerals in both oceanic and continental crust. Whats people lookup in this blog. On earth an ocean is one of the major conventional divisions of the world ocean these are in descending order by area the pacific atlantic indian southern antarctic and arctic oceans.

Most of the seafloor is covered by sediments that average 350 m thick. The separates the mantle and the crust. Oceanic crust oceanic crust extending 5 10 kilometers 3 6 kilometers beneath the ocean floor is mostly composed of different types of basalts. The ocean floor is not smooth the ocean floor is made up of rocks ledges and ditches.

Plate tectonic processes can affect climate. Oceanic crust formed mostly of mafic rocks or sima is. The hawaiian islands are a volcanic arc atop an oceanic subduction zone. The ocean floor is made of mostly brainly.

Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate it is composed of the upper oceanic crust with pillow lavas and a dike complex and the lower oceanic crust composed of troctolite gabbro and ultramafic cumulates. The ocean floor is made of mostly. The ocean floor is made of mostly granite basalt limestone clay and silt 2 rock that is cooled and solidified above ground is called intrusive extrusive batholith laccolith 3.