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The continents are made up of the least dense minerals and elements, essentially the continents float in a 'sea' of denser rocks, which are involved in a slow process of convection within the Earth's Mantle. As this convection proceeds the continental rafts get moved across the face of the planet. The cores of continents (where they are exposed at the surface by erosion and uplift are composed of Metamorphic rocks with a chemical composition similar to that of Granite - they frequently show a metamorphic fabric and the term used to describe them is 'Banded Gneisses'
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Which continents are the rocks layer found?
Rock layers can be found on all continents. The type and composition of rock layers will vary depending on the geological history and tectonic activity of each continent. For example, ancient rock layers are prominent in continents like North America, Europe, Africa, and Australia.
What rock type has been found across many southern continents?
Gondwana rock type has been found across many southern continents, including South America, Africa, Antarctica, Australia, and the Indian subcontinent. These rocks formed when these continents were part of the supercontinent Gondwana, which existed over 500 million years ago.
What rock makes up 90 percent of the earth's crust?
Igneous rock comprises the majority of Earth's crust.
One type of evidence that support wegener's continental drift hypothesis is the existence of?
matching geological features, such as similar rock formations and mountain ranges, on different continents. This suggests that the continents were once connected and have since drifted apart.
What type of heat transfer creates a force big enough to move continents on Earth?
The type of heat transfer that creates a force big enough to move continents on Earth is called mantle convection. This process involves the movement of hot rock in the Earth's mantle, which drives the motion of tectonic plates and causes continents to drift over long periods of time.
What type of tissue comprises the bulk of the myocardim?
nyhila mckenize
What type of rock igneous metamorphic or sedimentary makes up most of the continents?
The type of rock would be igneous.
What type of rock developed the first proto-continents?
Igneous rock was the first rock to cool on the surface.
Which continents are the rocks layer found?
Rock layers can be found on all continents. The type and composition of rock layers will vary depending on the geological history and tectonic activity of each continent. For example, ancient rock layers are prominent in continents like North America, Europe, Africa, and Australia.
What is the most common type of solidified lava?
Basalt, the extrusive igneous rock that comprises most of the oceanic crust, is the most common type of solidified lava.
What rock type has been found across many southern continents?
Gondwana rock type has been found across many southern continents, including South America, Africa, Antarctica, Australia, and the Indian subcontinent. These rocks formed when these continents were part of the supercontinent Gondwana, which existed over 500 million years ago.
What rock type is formed due to lighter and less dense maga rises and cools as it reaches the earth's surface?
Granite. That's the type of rock that makes the basis for all the continents.
What rock makes up 90 percent of the earth's crust?
Igneous rock comprises the majority of Earth's crust.
Which type of mountain is formed by colliding continents?
The type of mountain that is formed by colliding continents is the upward mountain.
One type of evidence that support wegener's continental drift hypothesis is the existence of?
matching geological features, such as similar rock formations and mountain ranges, on different continents. This suggests that the continents were once connected and have since drifted apart.
What is the main type of rock that Continental plates are up made of?
Granodiorite is the typical bulk chemical composition of continental crust, but the actual rock itself will vary from this depending where you are and what sort of history the continent has gone through. All continents are different in this way, but most typicall have a basement (main bit under the surface) that is metamorphic and archean in age and strongly deformed. This is then generally overlain with metamorphosed or lithified sediments (lithified means turned to rock). There can also be a number of intrusions within the crust, plutonic and planar. All in all this makes a pretty complex picture, but in short the bulk chemical composition of the crust can be approximated at a Granodiorite. Hope this helps.
What is the main rock type that that continental plates are made up of?
Granodiorite is the typical bulk chemical composition of continental crust, but the actual rock itself will vary from this depending where you are and what sort of history the continent has gone through. All continents are different in this way, but most typicall have a basement (main bit under the surface) that is metamorphic and archean in age and strongly deformed. This is then generally overlain with metamorphosed or lithified sediments (lithified means turned to rock). There can also be a number of intrusions within the crust, plutonic and planar. All in all this makes a pretty complex picture, but in short the bulk chemical composition of the crust can be approximated at a Granodiorite. Hope this helps.
