The Oceanic Crust Is Made Of Granite

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 oceanic crust is made of granite. The is the area of the upper mantle just below the lithosphere that behaves in a plastic fashion. The crust of earth is of two distinct types. Hot spots are associated with. It has a thickness of almost 7 kilometers and it is basically made of basaltic rocks.

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. The oceanic crust is made up of mafic rocks which is rich in magnesium and iron. Oceanic crust makes up just 0 01 of the mass of the earth. It is about 7 kilometers 4 miles.

All of the above are correct. Continental landmasses crust are formed primarily of while oceanic crust is primarily made up of. Oceanic crust is heavier and denser 2 9 g cubic cm than continental crust 2 7 g cubic cm. The oceanic crust is mainly made out of dark basalt rocks that are rich in minerals and substances like silicon and magnesium.

The floor of the oceans is made up of rocks containing mainly silica and magnesium. Is primarily made up of basalt whereas is primarily made up of granite. Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate. The crust is divided into two types.

Oceanic crust is thin and very dense. The crust overlies the solidified and uppermost layer of the mantle. The oceanic crust is similar to the continental crust except it is. Oceanic crust is primarily composed of mafic rocks or sima which is rich in iron and magnesium.

These rocks are also referred to as sima. Oceanic crust and continental crust. By contrast the continental crust is made up of light colored granite rocks full of substances like oxygen and silicon. Because both continental and oceanic crust are less dense than the mantle below both types of.

The crust and the solid mantle layer together constitute oceanic lithosphere. 30 km 20 mi to 50 km 30 mi thick and mostly composed of less dense more felsic rocks such as granite. Oceanic crust is mainly basalt whereas continental crust is mainly granite. This is why it is referred to as sima.

Oceanic crust is relatively younger than continental crust. Continental crust is made up of landmasses whereas oceanic crust is the floor of the oceans. Which of the following are characteristics of passive continental coasts. Oceanic crust is about 6 km 4 miles thick.