I would like to understand what is is the crust?There is the modern theory, which says that at the heart of our Earth are some blocks -tektonicheskie plates that are constantly moving relative to each other.This scientific version would explain many natural phenomena such as volcanic eruptions, earthquakes, tsunamis, etc.In general, the rock formations are also a consequence of the movement, but rather the substitution of one plate on druguyu.Na for thousands of years tectonic plates are in constant motion.They now and then stretched or compressed and, as a result, a crack, and scientists call a split line faults.These faults may extend for hundreds of kilometers along the ground and can go far in the earth's crust.Plates consist of rocks that motion rub against each other, it leads to "shudder" of the earth, in other words - earthquakes.If we look at Japan, we can see a large number of regular earthquakes that take place in this country.The reason is that in this state passes the junction of several plates: North American, Pacific, the Eurasian and the Philippine.The movement of tectonic plates and leads to the fact that here there is geologic activity and frequent zemletryaseniya.K the way, the last earthquake in Japan was due to the fact that shifted 20 cm Eurasian plate.In the western side of the plates continue to move the others, which means that the new earthquake neizbezhny.No most impressive boundaries of tectonic plates are ocean trenches that are under water.We can see only the echoes of those shocks that come down to us in the form of a tsunami.The strength and power of nature is simply amazing and makes you to feel powerless against the powerful stihiy.Vse in some places humanity can look at the tectonic plates of the earth, the boundaries of which are not hidden under the water, on land and form the deepest canyons.For example, in the territory of Iceland's many volcanoes, is fully explained by the fact that the country is at the crossroads of two powerful plates: the Eurasian and North American.In Iceland Þingvellir National Park, you can see a giant canyon, which is called Almannagya and stretches for 8 kilometers in length and its width is 64 meters.Through the continuation of a canyon Alfagya held a special "bridge between continents" .Poroy we can see a very unusual topography - topographical design, which has created the very nature: rocky shores and steep cliffs.
also tectonic plates collide with each other, can lead to another, not less risk of natural disasters - volcanic eruptions.Therefore, one of the most life-threatening human phenomena, considered the release of avalanches on the ground.This fiery mixture of steam, gas, half-melted rock rushes through a hole in the Earth's crust at an incredible speed, destroying everything in its path and presenting a danger to the lives of all living beings.
But do not assume that tectonic plate movement that can cause the most powerful natural disasters, always lead to such consequences.Basically, the movement of the plates runs so slowly and gradually that we just do not notice it.Only after time, we can say that the water level in the well near the house used to be significantly higher or lower, and an old house in the street much ass.It is thanks to this movement, and we'll have a varied terrain, and hence the different flora and fauna, which is characteristic of a particular continent.
