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Basalt is the igneous rock which makes up most of the ocean floors. It is smooth and velvety-black in appearance and very hard. New seafloor is constantly produced at the mid-ocean rifts, where areas between spreading tectonic plates are infilled with rapidly cooling lava.

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14y ago
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14y ago

Magma from the uppermost mantle, forming the rock basalt.

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9y ago

Basalt is the igneous rock that is most abundant in the oceanic crust. It is also the most abundant volcanic rock on earth as well.

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14y ago

The igneous rock basalt.

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13y ago

Basalt.

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Q: What is the most common igneous rock on the ocean floor?
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Related questions

Why are basalt and granite important igneous rock?

As it turns out, most of the ocean floor is basalt, and most of the continents are granite.


What type igneous rock makes up most of the ocean floor?

Basalt


Iron rich volcanic rock that makes up much of the ocean floor is?

The volcanic rock that makes up most of the ocean floor is called sediment.


The most abundant type of rock is?

Most of the rocks of the earth's crust are igneous, although sedimentary rocks usually cover them. Basalt is the most common type of igneous rock and it covers the ocean floor and thus, exists over two-thirds of the earth's surface!


Where is the abyssal plain?

it is located at the bottom of the ocean floor most common in the Pacific Ocean


How is a abyssal plain formed?

it is located at the bottom of the ocean floor most common in the pacific ocean


What is the most common igneous rock of the ocean basins?

Ocean basins are primarily made of the igneous rock, basalt.


Are igneous rocks the most common rocks?

Igneous rock is by far the most common rock of the crust.


Most of the ocean floor is made up of the?

Most of the ocean floor is made up of ocean plains.


What is the most extrusive igneous rock?

Basalt is the most common extrusive igneous rock.


What is the Most anaerobic zone in the ocean?

The ocean floor is the most anaerobic zone in the ocean.


What is the most common cause of tsunamis?

Tsunami are waves caused by sudden movement of the ocean due to earthquakes, landslides on the sea floor, land slumping into the ocean, large volcanic eruptions or meteorite impact in the ocean.