Question: What Are The Characteristics Of Oceanic Plates?

What are oceanic plates?

Oceanic plates are formed by divergent plate boundaries.

These zones, located along mid-ocean ridges, represent areas where upwelling magma creates new oceanic crust.

As oceanic plates subduct, they melt to form magma.

This magma cools over millions of years, producing intrusive igneous rock and new continental crust..

Which plates are continental and which are oceanic?

The current continental and oceanic plates include: the Eurasian plate, Australian-Indian plate, Philippine plate, Pacific plate, Juan de Fuca plate, Nazca plate, Cocos plate, North American plate, Caribbean plate, South American plate, African plate, Arabian plate, the Antarctic plate, and the Scotia plate.

What are the major oceanic plates?

There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world’s largest plate at 39,768,522 square miles.

What are two oceanic plates?

An example of an oceanic plate is the Pacific Plate, which extends from the East Pacific Rise to the deep-sea trenches bordering the western part of the Pacific basin. A continental plate is exemplified by the North American Plate, which includes North America as well as the oceanic crust…

What are the 2 types of plates?

The two types of tectonic plates are continental and oceanic tectonic plates.

Which is thicker oceanic or continental crust?

Continental crust is typically 40 km (25 miles) thick, while oceanic crust is much thinner, averaging about 6 km (4 miles) in thickness. The effect of the different densities of lithospheric rock can be seen in the different average elevations of continental and oceanic crust.

What are the similarities of continental and oceanic crust?

Oceanic and Continental crusts are alike because they both shift and move and grow. They differ by there rock types. Oceanic crust is made up of dense basalt while continental crust is made up of less dense granite.

What features and characteristics are different between oceanic and continental plates?

Layers that are less dense, such as the crust, float on layers that are denser, such as the mantle. Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust. This is partly why the continents are at a higher elevation than the ocean floor.

What are 3 differences between oceanic and continental crust?

The oceanic crust is mainly made out of dark basalt rocks that are rich in minerals and substances like silicon and magnesium. By contrast, the continental crust is made up of light-colored granite rocks full of substances like oxygen and silicon. … The continental crust is older than the oceanic crust.

What happens when two oceanic plates diverge?

When two oceanic plates diverge, underwater ridges and mountain ranges form, such as the mid-Atlantic Ridge. … Those rift valleys would eventually lead to magma rising to form new crust also, but usually before that can happen, the continent breaks apart, and water rushes in to create a new ocean.

Why oceanic plates are denser?

Oceanic plates are made of basalt rock, so they are denser. … The oceanic plate is denser and sinks due to its lower buoyancy. It is sucked into the asthenosphere and is melted deeper into the Earth, called a subduction zone. The continental plate is less dense and floats over the top of it since it is more buoyant.

Which is the world’s largest oceanic plate?

Pacific plateThe Pacific plate is over 103,000,000 km2 in area. It is an oceanic plate, which is thinner than lithospheric continental plates.

What are the oceanic plates made of?

Oceanic plates are made of basalts (cooled volcanic rock made of silicon, oxygen, iron, aluminum, & magnesium). Oceanic crust is only about 6 kilometers thick. The continental plates are made of another volcanic type of silicates called granite.

What is the meaning of Oceanic?

adjective. of, living in, or produced by the ocean: oceanic currents. Oceanography. of or relating to the region of water lying above the bathyal, abyssal, and hadal zones of the sea bottom. … immensely large; vast: an oceanic expanse of stars.

What are the similarities and differences between oceanic and continental crust?

Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust. This is partly why the continents are at a higher elevation than the ocean floor.