What is the crust beneath the Atlantic Ocean like?

Biology

2 answers:

True [87]3 years ago

5 0

mostly made of granite and limestone

Stolb23 [73]3 years ago

5 0

Answer:

The oceanic crusts are thin and are usually about a thickness of about 5 to 7 km. They contain rocks that are poor in silica and mostly enriched in magnesium (Mg) and iron (Fe). Due to the divergent motion of plates, seafloor spreading takes place as a result of which the hot molten magma comes out to the ocean floor and immediately cools down and gets solidified along the mid-oceanic ridge. The rock types produced here are mainly basaltic in nature. Basalt is a mafic rock and is comprised of denser minerals due to which the oceanic crust is relatively denser than the continental crust. Pillow basalts also form in this region.

Thus, the crust that is present beneath the Atlantic ocean is also comprised of basaltic to andesitic in composition.

You might be interested in

Where does diffusion of oxygen and carbon dioxide take place in the lungs?

Nutka1998 [239]

A - The alveoli have a membrane that is only one cell thick to allow for a short diffusion time to capillaries.

4 0

4 years ago

The full moon always rises at sunset and sets at sunrise. True False

blagie [28]

The answer is false

6 0

3 years ago

The use of which material can substitute for copper and reduce copper mine production?

Lesechka [4]

Answer:

Glass

Explanation:

Copper is a good conductor of electricity and this is why it is used in electrical equipment to transmit electrons with the least resistance. Cable conductors are made of copper and used to transmit data. Copper is now being replaced by optic fiber that is made of glass. Instead of using electrons, fiber optic transmits data using photons – which transmits more data rate than copper.

6 0

3 years ago

Read 2 more answers

A student is experimenting with a substance that moves into the cell via facilitated diffusion. The student notes that as the co

Drupady [299]

Answer:c

Explanation:

5 0

4 years ago

Read 2 more answers

Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic isolation a

jonny [76]

Correct answer: A) bio-geographic isolation affects the random changes that take place within gene pools

The bio-geographic isolation of the species takes place when the geographical barrier work as a distinguishing agent. It takes place when the group of animals, plants and other creatures are not allowed to mate with each other.

The mixing of there genes within the same species is separated by the geographical barrier.

The barrier allows the mating of the species in a different way as compared to the previous one.

5 0

3 years ago

Read 2 more answers