Читать книгу Bible of the Time. …from the Big Bang to the present day… - Rem Word - Страница 5

Proterozoic (Greek «earlier life») – the longest geological period, 2 billion years, starts 2.5 billion years ago. For one reason or another, oxygen accumulates in the atmosphere. This gas leads to the extinction of almost all anaerobic creatures. The ozone layer is forming. The next trouble is the great Huron glaciation (2.4 – 2.1 billion years ago). Methane combines with oxygen to form carbon dioxide, which is more transparent to reflected light. As a result, the Earth turns into a huge «snowball». It is as cold at the equator as it is in modern Antarctica. Life is preserved in polynyas and reservoirs with melt water.

Great Huron Glaciation. The earth is a snowball

Volcanoes increase levels of carbon dioxide and methane. A new perturbation is being prepared. For some thousand years, significant territories are freed from ice and the planet’s climate returns to the norm known to us.

Sea sponge. This is how it all began…

The second option, explaining the presence of signs of glaciers in the equatorial regions, is a fairly rapid rotation of the Earth’s poles, followed by their return to their place. According to some bold calculations of scientists, the replacement of the North by the South and vice versa takes almost a single day.

One way or another, sea sponges appear, that is, aquatic multicellular animals leading an attached lifestyle, as well as fungi, essence, eukaryotic communities that combine the characteristics of plants and animals. As a result of their vital activity, soil appears.

Gondwana and Laurasia

The single continent of Rodinia is split into two parts. Pieces of sushi diverge to the poles. The northern half is called Laurasia, the southern half is Gondwana.

The sun increases luminosity by 12%. The era of the Precambrian or Cryptozoic, «Hidden Life» (sometimes this is how the aeons of Archean and Proterozoic are called together) ends.