Which crust is more dense

How is the mantle different from the core? What are 3 characteristics of the crust? Which type of crust is less dense? Why is the oceanic crust more dense? What would happen if both types of crust has the same density?

What would happen if the continental crust and oceanic crust has the same density? Is younger crust more dense? What happens when two Oceanics collide? What will be the effect when two plates slowly move towards each other?

Why is old oceanic crust more dense than new oceanic crust? Earth Science. Apr 13, Explanation: At mid-ocean ridges, two tectonic plates move apart and molten magma rises to form new oceanic crust.

This is a really important concept because it explains why Asked by: Mahamadi Notte asked in category: General Last Updated: 20th June, Why oceanic crust is more dense than continental crust?

Oceanic crust is denser because it generally melts to a higher fraction than continental crust. When rocks melt some minerals melt before others.

What is the crust made of? Above the core is Earth's mantle, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minerals. The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.

Is the crust solid or liquid? The crust and the inner core are solid, whereas the outer core and inner mantle are liquid. What is the density of the Earth's crust? The average density of continental crust is about 2. Continental crust is also less dense than oceanic crust, whose density is about 2.

What is the thickness of the crust? The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about miles 8 kilometers thick under the oceans oceanic crust and about 25 miles 32 kilometers thick under the continents continental crust. The oceanic and continental crusts, due to their different chemical compositions, have different densities.

The continental crust comprises mainly of rocks that are granite in nature or similar to it, while the oceanic crust consists primarily of basalt. We know that partial melting occurs in the formation of these three substances mantle, oceanic and continental crusts , and this is the reason they all vary in composition. Now, scientific studies have shown that in the process of melting a rock, some elements will remain in the fold, while others tend to move into the compressed part. Resulting from this, the foundation formed during the partial melting is less in weight than the original stone.

Then, if you also decide to subject that formed rock to the process of partial melting, you get a less dense rock. The oceanic crust is formed in the mid-ocean ridges when the partial melting takes place in the mantle.

While continental crust forms when the rocks are subject to a multiple of partial melting processes, over time, thus, it results in the stones constantly getting depleted in density. In the ocean, wherever ridges are, tectonic plates tend to drift away, and this causes molten magma to rise. It, in turn, leads to the formation of new oceanic crust.

But then as this crust tends to drift away with time, it starts to age, and its temperature reduces. As time goes by, it becomes denser. Density increased connects to temperature. The reason is that rocks tend to expand in size when subjected to harsh temperatures and contract when allowed to cool.

Now, mathematically density is mass divided by volume. So, this connotes that it is a reduction in volume due to cooling. It leads to an increase in the density of the substance. It is very vital because it illustrates why oceans usually are far away from the ridges and also why the angle in which the plates being altered change when you move from place to place.

Boreholes put in place are very useful in the higher planes, and the bottom planes jet seen concluded using the methods of transform fault sampling and also contrasting with mafic igneous rocks.

The progression is gotten when the mantle of the granular volcanic rock melts at a considerably guarded rate. It contributes to the basalts having a specific combination of Mid Ridge Basalt Rocks. On the other hand, the continental lithosphere tends to be more impenetrable due to its high composition of coarse-grained igneous rocks.