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"Mid ocean would be basaltic pillow lavas, continental shelves \ contain coquina limestones made from shells. There are some sites around the Bahamas that have exposed limestones derived in a former time from limey oozes/muds. All in all by a vast percentage would be basalt." http://answers.Yahoo.com/question/index?qid=20090908165526AAraFxL that's my citation
What else can I help you with?
What type of rock makes up the ocean floor?
The ocean floor is primarily made up of basalt rock, which is a type of igneous rock formed from solidified lava. Basalt is dark in color and forms through volcanic activity at mid-ocean ridges and hotspots.
What is the most common igneous rock on the ocean floor?
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.
How is new rock added to the ocean floor?
New rock is added to the ocean floor through a process called seafloor spreading, where magma rises from the Earth's mantle at mid-ocean ridges, cools and solidifies to form new oceanic crust. This process helps expand the ocean floor and contributes to the movement of tectonic plates.
How do strip of magnetized rock on the ocean floor provide evidence of sea-floor spreading?
Strips of ocean-floor basalt record the polarity of earth's magnetic field at the time the rock formed. These strips form a pattern that is the same on both sides of the mid-ocean ridge. the pattern shows that ocean floor forms along mid-ocean ridges and then moves away from the ridge.
Where would I find the oldest rock on the ocean floor?
The oldest rock on the ocean floor can be found in the central parts of the ocean basins, particularly in regions known as abyssal plains. These rocks are generally around 200 million years old or older.
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?
Basalt is the iron-rich volcanic rock that makes up much of the ocean floor. It forms from the cooling and solidification of magma that erupts through underwater volcanic activity, such as mid-ocean ridges. Basalt is a key component of Earth's oceanic crust.
A rock that makes up much of the ocean floor?
basalt
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 of rock makes up the ocean floor?
The ocean floor is primarily made up of basalt rock, which is a type of igneous rock formed from solidified lava. Basalt is dark in color and forms through volcanic activity at mid-ocean ridges and hotspots.
What is the most common igneous rock on the ocean floor?
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.
What are the most prominent feature on the ocean floor?
The most prominent feature on the ocean floor is basalt. There are other types of salts and silt as well which makes up the ocean floor. ADDED: Almost there. Yes, the deep ocean floors are of basalt, but though there are areas of bare rock, most are covered with deep layers of sediment. Not "other types": basalt is neither a silt nor salt.
What evidence in rock supports the theory of seafloor spreading?
Convergence supports the theory of seafloor spreading. Samples of the deep ocean floor are evidence of seafloor spreading because the basaltic oceanic crust and overlapping sediment become younger as the mid-ocean ridge is approached. Also, the rock that makes up the floor of the ocean is younger than the continents.
What type of rock is organic rock?
An Organic rock is an Sedimentary rock and it is made in the ocean from calcium and other minerals building up on the ocean floor :)
On the ocean floor where is the oldest rock?
The oldest rock in oceanic crust is that which is found the greatest distance from a mid-ocean-ridge.
Do minerals come from the ocean?
yes, the minerals come from rock chimneys on the ocean floor
How is new rock added to the ocean floor?
New rock is added to the ocean floor through a process called seafloor spreading, where magma rises from the Earth's mantle at mid-ocean ridges, cools and solidifies to form new oceanic crust. This process helps expand the ocean floor and contributes to the movement of tectonic plates.
