General, Research, Technology

Another continent was found on Earth. Yes, just like that

We were taught from childhood that there issix continents and six parts of the world, however, they do not strictly correspond to each other. Where America is divided into North and South in terms of continents, they make up one part of the world - America. Eurasia, on the contrary, is one continent that is divided into two parts of the world: Europe and Asia. It seems that everything is smooth, but now scientists refute this and argue that there is another continent. This is a twist ... In fact, scientists have discovered it a long time ago, but they forgot to tell us. More accurate data and scientific evidence has now been obtained that could change the way humanity thinks about our planet.

The world map looks familiar, but we do not see all continents.

Content

  • 1 How many continents are there on Earth
  • 2 New continent of the Earth
  • 3 Why Zeeland is truly a new continent
    • 3.1 Signs of a continent
  • 4 Continent Australia and Continent Zealand
  • 5 Zealand in the world economy

How many continents on Earth

Interestingly, not everything is so simple everywhere, and notin all countries the number of continents is considered the same. This has nothing to do with the new continent, but it is extremely interesting from the point of view of a different approach to science.

It turns out that in different countries, people count the continents differently and unite them in different ways. For example, in China, India and partially in western Europe, it is believed that there are seven continents... These countries consider Europe and Asia to be different continents.

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In Spanish speaking countries and parts of the easternEurope, including Greece, it is customary to unite both Americas into one continent, but still divide Eurasia and talk about six continents, but from the other side. There are even countries that unite America, and also Africa with Eurasia, and receive only 4 continents (Afro-Eurasia, America, Antarctica, Australia). In our country, it is customary to talk about six continents with the division of the Americas and the unification of Eurasia.

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Earth's new continent

According to a recent study, we can talk aboutthe fact that a new seventh continent called "Zealand" was found on Earth. They found him only now, although for thousands of years he was literally under our noses.

11 researchers argue that New Zealand and New Caledonia are more than just a chain of islands. Instead, they are part of a single continental plate with an area 4.9 million square kilometers (1.89 million square miles). However, it has nothing to do with the plate on which Australia is located.

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Scientists said that this is not a sudden discovery,which happened suddenly, but the result of many years of research. Even 10 years ago, they did not have the opportunity to formulate all their observations together, since there was simply not enough data.

For a long time they could not prove the existence of a new continent, but here it is.

Many other scientists who did not participate in the study accepted and agreed with the findings of the researchers, with a few minor exceptions.

Why Zeeland is truly a new continent

In fact, they started talking back in 1995 that something is "unclean" in this region. The first person to say this was Bruce Luyendyck (Bruce Luyendyk). True, he said, he did not try to describe the new continent. When he proposed the name Zeeland, he rather spoke of the geological unification of New Zealand, New Caledonia and the flooded land areas near them. All this was part of the supercontinent of Gondwana, which existed 200 million years ago.

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Researchers have now pushed Luendyk's idea toseveral big steps forward. They revised known evidence based on four criteria that geologists use to count a piece of the earth's crust as a continent.

Signs of the continent

  • Earth rises high enough relative to the ocean floor
  • There must be a variety of three types of rocks (igneous, metamorphic and sedimentary)
  • The continent is a denser section of crust than the ocean floor around it
  • Well-defined boundaries around a fairly large area

Magmatic rocks are called erupted by volcanoes. Metamorphic rocks were altered by heat or pressure. Sedimentary rocks formed by erosion

Over the past few decades, geologists havedetermined that New Zealand and New Caledonia meet the requirements of the first three items. As a result, this led to the fact that more and more scientists consider the region to be a continent, and not just a group of islands.

The new continent can change a lot, although it cannot be populated. Not yet.

As for the fourth point, there weredoubt, and many previous studies have shown that an area can be composed of many micro-continents. In this case, it was impossible to talk about a new full-fledged continent. But the new study used detailed satellite images of different points on the surface and the seabed. As a result, evidence was obtained that Zeeland is indeed a geologically integrated whole.

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Continent Australia and Continent Zealand

According to scientists, part of the land on whichIndia is located, it was also a separate continent many years ago and even corresponded to all four of the above signs. Many millions of years ago, it united with Eurasia and became part of it.

Apparently, Zealand has not yet had timeunite with Australia, but according to scientists, everything is going exactly to this. In the meantime, the sinkhole separating the two continents is 25 kilometers (15.5 mi) wide.

True, there is one problem with the new continent. It is located at the junction of two tectonic plates (Australian and Pacific). This split makes the region look more like a group of continental fragments than a single plate. But researchers note that Arabia, India, and parts of Central America have similar subdivisions, but are still considered to be parts of larger continents. The main thing is that Zealand is not divided into micro-continents and is a single continental plate.

Tectonic plates tend to move. Including taking the continents with them. So India also moved.

Moreover, the researchers write, samples of mountainThe rocks show that Zeeland was made from the same continental crust that was once part of Gondwana, and that it migrated in ways similar to the continents of Antarctica and Australia.

The reason the new continent couldn'tto open for so long is that many millions of years ago it gradually went under water, and above there were only territories that now correspond to New Zealand, New Caledonia and some of the smaller islands. This is only about five percent of the territory of the discovered continent.

The scientific value of the classification of Zealand as a continent is much more than just an additional name on the list - scientists write “The fact that a continent can be so submerged but not fragmented makes it useful. This is suggestive of geodynamic changes in the earth's crust.

Zealand in the world economy

Now I wonder how New Zealand will behave in terms of international law. On the one hand, in United Nations agreements specifically mentions continental shelves inas the boundaries that determine where resources can be obtained. But the new data that has been discovered allows us to think about what to do next and what should be considered the territory of the country.

Although, some serious changes in this area are unlikely, but if suddenly someone starts spinning it, then a very interesting story can turn out.