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How is the earths crust under the oceans different from the crust below continents?
The crust under the ocean is thinner than continental crust. Ocean crust is also, on average, richer in minerals containing iron and magnesium, giving it a greater density than continental crust. Imagine placing two slabs of wood next to each other in a swimming pool. The first slab will be thin piece of oak and the second will be thicker piece of pine. The pine, being less dense than the oak, will stick up higher in the water and at the same time will also ride lower in the water than the oak. Similarly, both ocean crust and continental crust float on the mantle (more specifically the asthenosphere which is a layer in the upper mantle). Ocean crust is like the oak and continental crust is like the pine. Ocean crust is composed largely of the igneous rocks basalt, gabbro, and peridotite. Continental crust is much more diverse in its composition, but on average is similar in density to granite.
What else can I help you with?
Does the earths crust extend deeper below the continents or below the ocean basins?
Earths crust extend deeper below the continents than below the oceans basins (or at least this is what I think).
What continents and oceans are below the western hemisphere?
indian ocean and north america
What are oceans and continents?
There is 7 Continents around the globe.There is 4 Oceans around the globe i have listed them below:--PacificOcean--IndianOcean--ArticOcean--AtlanticOcean-(Altogether there are 11 continents and oceans)
What forces below earth surface shape landforms?
The tectonic plates below earths surface shape earths landforms
If volcanoes get their magma from the crust below them what can you say about the silica content of Earths crust under the oceans?
The silica content of the Earth's crust beneath the oceans is typically lower compared to the crust beneath continents. This lower silica content results in a type of magma known as basalt, which is commonly associated with oceanic volcanoes like those found along mid-ocean ridges.
What three continents are below the equator?
The three continents below the equator are Africa, Australia, and South America.
Is the passage between Australia and Antarctica getting smaller or bigger?
Your question is about the oceans and seas that occupy the space between these two continents. These levels have risen lately, as below, and the elevation is measured in millimeters. In terms of the distance to sail between these two continents, the difference is negligible.
Why do scientist believe that there was once just one supercontinent?
Scientists believe in the existence of a supercontinent, known as Pangaea, because of geological evidence such as the matching coastlines of continents, similar rock formations, and fossil evidence of similar species across different continents. This concept is supported by the theory of plate tectonics, which explains how continents have moved and interacted over geological time scales.
Continents map?
A map of the world with the continents is included in the link below.
Where is the earth crust the thickest?
Under continents
How are earths continents linked?
Earth's continents are linked by tectonic plate movements. The Earth's crust is divided into several large plates that float on the semi-fluid asthenosphere below. These plates are continuously moving, causing the continents to drift slowly over time. This movement is known as plate tectonics.
What oceans lie below the equator?
Of the four oceans, none is entirely below the equator, but the vast majority of the Indian Ocean is. There are also large parts of the Atlantic and Pacific Oceans that are below the equator. The Arctic Ocean is exclusively north of the equator.
