Doubts about the geography of the earth s crust, which land plate is due to the movement of the eart

Now we are stepping on the earth's crust, but it is only the surface of the earth's crust;

Weathering and erosion of rocks by external force are both ground and mountainal, as long as the rocks on the surface of the ground will be subject to differentiation and erosion, and even when there are cracks in the surface of the limestone, the underwater infiltration into the rock will also be eroded;

The material after weathering and erosion by external forces is transported to the low-lying place by external forces such as wind or flowing water and deposited, and after a long geological period, it consolidates into rocks to form sedimentary rocks, and descends in the crustal movement to reach the interior of the earth.

The magma cools down and turns into magmatic rock, 1After the magmatic rock is weathered and eroded, it is transported to a low place by external force and becomes sedimentary rock, and the sedimentary rock is buried in the ground and comes into contact with magma, metamorphic at high temperature, and becomes metamorphic rock, which further melts at high temperature and becomes magma.

2.The magmatic rock is in direct contact with the magma, and metamorphism occurs, forming metamorphic rock, which continues to melt and become magma at high temperatures.

3.After the formation of metamorphic rocks, if they are exposed to the surface, they will also be weathered and eroded, transported and deposited to lower places to form sedimentary rocks, and then the process is similar to 1

Australian plate. The causes of different types of crustal movements are different. The orbital plane of the Earth's orbit around the Sun is called the ecliptic plane.

The position change of the earth's crust and its constituent rocks with the ecliptic plane as a reference is the largest crustal movement.

It should be this question. Question: Due to the movement of the earth's crust, the continental plate separated from the ancient continent called "pancontinent" relatively early, and the vast ocean became a natural barrier between it and other continents, preventing the genetic exchange between primitive marsupials and evolved placental animals, so that the marsupials in this region were fully developed.

Choice for this question: A, Asia B, Africa C, Australia. The correct answer is option C, Australia.

1. Classification. The earth's crust is the outermost solid shell of the earth and is made up of different types of rocks and soils. The earth's crust can be divided into two main types based on its chemical and physical properties: continental crust and oceanic crust.

Continental crust: The continental crust is located below the surface of the land and is made up of a large amount of rock and soil. The continental crust has a low density, about g cm, and a thickness of between 20-70 km.

The main components of the continental crust are silicate rocks, including granite, gneiss, quartzite, etc. The continental crust is thicker, harder, and older than the oceanic crust, with the oldest continental crust being about 3.8 billion years old.

Oceanic crust: The oceanic crust is mainly found below the seafloor and is made up of basalt and thinner sediments. The density of the oceanic crust is relatively large, about g cm, and the thickness is generally between 5-10 kilometers, and the thickest point is only about 20 kilometers.

The oceanic crust is mainly made up of minerals, including silicate minerals containing iron and magnesium, such as olivine and pyroxene. The oceanic crust is thinner and younger than the continental crust, with the oldest oceanic crust only 200 million years old.

In general, the continental crust and the oceanic crust of Dazhou are very different in terms of composition, density, thickness, and age. These differences reflect the role and impact of different geological processes in Earth's history and provide the basis for the diversity of the Earth's surface.

2. Differences. There are many differences between the continental crust and the oceanic crust, and here are some of the more notable ones:

Compositional differences: The continental crust is mainly composed of silicate rocks, while the oceanic crust is mainly composed of basalt. Silicate rocks are rich in elements such as aluminum and potassium, and basalt is rich in elements such as magnesium and iron.

Density difference: The density of the oceanic crust is higher than that of the continental crust, with an average density of about g cm, while the average density of the continental crust is about g cm.

Thickness difference: The continental crust is thicker than the oceanic crust, which can reach about 70 kilometers at its thickest point, while the thickness of the oceanic crust is generally only 5-10 kilometers, and the thickest part is only about 20 kilometers.

Age differences: Continental crusts are older than oceanic crusts, with the oldest continental crust being about 3.8 billion years old, while the oldest oceanic crust is only 200 million years old.

Distribution differences: The continental crust is mainly distributed on the land surface, while the oceanic crust is mainly distributed below the seafloor, covering about 70% of the Earth's surface.

Topographic differences: The topography of the continental crust is complex and diverse, including mountains, plains, basins, plateaus and other terrain types, while the topography of the marine crust is mainly submarine mountains, trenches, sea platforms, etc.

Overall, the differences between continental and oceanic crusts stem mainly from the process and history of their formation, reflecting the diversity and richness of the Earth's surface. At the same time, the continental crust and the oceanic crust also interact and influence each other, and together they form the surface of the earth.

The movement of the earth's crust is caused by the thermal forces on the earth and the circulation of rocks, which cause the rocks to change and move, causing the movement of the land plates. Specifically, the heat energy in the earth's interior will cause rocks to form continents and oceans on the surface of the earth, while the heat wave in the earth's interior will cause changes in the earth's crust, causing the continental plates to move outward, forming phenomena such as ** and volcanic eruptions. At the same time, the Earth's gravity will also cause the Earth's land plates to be squeezed, causing them to move and form new topography and landforms.

Therefore, crustal movement is the root cause of the movement of land plates.

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<> due to the movement of the earth's crust, the land plates move relatively, and this relative movement can lead to the formation of **, volcanic eruptions, and mountain ranges.

What land plates are due to the movement of the earth's crust.

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Due to the movement of the earth's crust, the relative motion of the land plates can lead to volcanic eruptions and the formation of mountain ranges.

Crustal movement refers to the relative movement of the earth's crustal plates on the earth, including phenomena such as **, volcanic eruptions, the formation of mountain ranges, and the drift of plates. The movement of the earth's crust is caused by thermodynamic and physical processes in the Earth's interior, including the Earth's rotation, convection in the Earth's interior, heat conduction, magma movement, etc. The movement of the earth's crust will have a profound impact on the ecological environment and human society on the earth, and the study of the movement of the earth's crust has always been one of the important research directions of the earth science.

Due to rock failure due to crustal movements, land plates change. Earth's land plates are made up of rocks from the Earth's crust, which is made up of rocks in the upper part (lithosphere) and an asthenosphere in the lower part (including the mantle and outer core). Natural forces such as thermal convective movements and ** in the Earth's interior generate enormous amounts of energy, causing the land plates to vibrate up and down and move towards the surrounding areas.

Under the action of these forces, the land plate will undergo violent collision, stretching, squeezing and other deformations, resulting in different topography and landforms on the surface, such as continental puzzles, **, volcanoes, etc. The movement of land plates can also lead to natural disasters such as mountains and **, which can also have an impact on the climate environment. At the same time, in areas where plates collide, the deformation and melting of rocks will also produce a large number of mineral deposits and valuable resources, which are of great significance for economic development.