Written in SCIENCE he
It is likely that during primary school you have been taught that there are 7 continents on Earth; Asia, Africa, North America, South America, Antarctica, Europe and Oceania. However, the planet has undergone many transformations, so that in the past, millions of years ago, there were other continents what already they disappearedhere we detail how are they called and where are theyas well as his location.
The first continent what already He disappeared of the Land and that it existed millions of years ago is Ur, also known as the supercontinent that was one of the first to form. Approximately 3,000 million years ago in the Archean Eon, and apparently it was the only one on the planet. Therefore, it is also considered as a supercontinent. Then, around 1 billion years ago, Ur likely merged with Atlantis and Nena to form the supercontinent Rodinia.
Geologists believe that Ur survived many millions of years, until He disappeared of the Land after being destroyed by supercontinent Pangea which also destroyed Laurasia and Gondwana. Today, some fragments of Ur still exist and are part of Australia, India and Madagascar.
Baltica is another of the continents what already He disappeared from Earth and it is estimated that it was born 1,900 million years ago in the Paleoproterozoic era. Today, its location is in what is now known as Eastern Europe. This piece of land was part of the Rodinia supercontinent and was very small compared to others such as Gondwana or Laurentia.
He continent Laurentia already He disappeared of the Land It is located in what we know today as North America. This piece, also called a supercontinent, arose in the Paleoproterozoic era. Geologists believe it disappeared from the planet when it collided with Godwana.
Gondwana is the ancient block of the continent southern and its origins date back to the Neoproterozoic era more than 550 million years ago. Nevertheless, He disappeared of the Land after colliding with Laurentia, Baltica and Siberia with which the supercontinent called Pangea was formed. It was from the Jurassic era that Gondwana split when the Drake Passage separated South America from Antarctica.
With the extinction of Gondwana, the subsequent formation of Pangea and its disappearance of the Land it gave way to the formation of Africa, as well as the also disappeared continent of Zealandia, Australia, the island of Madagascar and Antarctica. Before disappearing from the planet, the opening of the Iapetus ocean occurred. It is known by this name because it was so named by the scientist Eduard Suess, in honor of Gondwana, a region located in India.
Laurasia is another of the continents what already He disappeared of the Land and that it was located in the Northern Hemisphere more than 200 million years ago where North America, Europe and Asia are located today. It is one of the fragmented parts of the supercontinent Pangea. Lausaria was formed to the north and Gondwana to the south. In the middle of these continental masses arose the Tethys Sea where the Mediterranean Sea is located today.
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