In the quest for our cosmic roots, we especially look for, ie where our oceans have water Blue PlanetBlue Planet And the oxygen of our environment. At this last point, we had every reason to think that our environment initially resembles it. JinnJinnMade from, made of,HydrogenHydrogen AndHeliumHelium In large quantitiesAmmoniaAmmonia And methane, as initially considered to be a Miller experience. However, we ended up understanding UnrulyUnruly The photo chemistry produced by solar radiation during Hadian had to disappear quickly, more clearly stimulated by photodoscience ProgramProgram IUltra violetUltra violet Injured RollyRolly. Hydrogen and helium eventually go into space due to low field GravityGravity Land
The standard geo -chemical scenario now assumes that the early environment of the earth was mainly made of water vapor,NitrogenNitrogen And gazgaz Carbon dioxide (degashed from volcanic activity), the latter is rapidly trapped in the form of carbonates. Before furthering the theory of the theory of environmental oxygen, the theory that today makes a variety of proposals. Nature, It is useful to remember a short history of past events of ancient earth.
Oceans that are widespread rusty
Thus, between our time, between 4.56 billion years to 3.9 billion years, in the name of the Hadith of the Hadiths, Hadith: Hadith. The land is still a severe alka bombing and a sea of magma is subject to several kilometers deep, without real LayerLayer SpanSpan Permanent, probably exist for a long time. Almost -4.1 billion years, first stable continent appears and water FluidFluid Assesses its presence.
From 3.9 billion years to -2.5 billion years, this is archive. The oceans are present, the continents started their development and life is already there with the plates. Geological data in this period are more abundant and more easily available than Hadine, though it is still very low.
Finally, from -2.5 billion years to -600 million years, his name is ProtoxicProtoxicInitially, with the seederian, a system of the Pelio Protrozic era. At this time, we observe the appearance of a large amount of Bif, Banded Iron Formations In English, it is rich in banded training ferfer.
https://www.youtube.com/watch?v=45mf7zhwmaw
Strometolitis (“stone carpet” in Greek) is carbonated stone in cabbage. We see the Hamil Pool here in Australia. By forming biofelm on their surface, photosantic cynobacteria tramps a gelatin substance with sand grain, while calcium carbonate (soluble) causes bike carbonate (dissolution of water). © Ed Aston
The explanation given for them is as follows. Life exists in life for at least 3.8 billion yearsManMan. At a time of date of date BiologyBiologyDiscover of Photo SanthaisPhoto Santhais Was made by ancient organizations, most likely BacteriaBacteriaAnd more clearly SeanobacteriaSeanobacteria (« GraceGrace »Blue -green) oxygen producer, actually from geological shapes called stromatolitesstromatolites. When the amount of oxygen released by photo synthesis through these altitudes can cause iron rainfall in the ion (about 3 billion years ago, the environment was almost almost no oxygen, so that it is changed. MineralMineral Iron Rich continents developed IonsIons Freoxes (per2+), Soluble in water and especially MobilesMobiles. Therefore, it is hard to imagine that these ions have spread widely in the World Ocean), BIFS has been formed. This is also the origin of the larger too DepositDeposit Iron’s, like walking in Australia.
Geo Chemistry and its dates show that it was about 2. 2.4 billion years ago that the amount of oxygen issued was enough to react with all iron in the global sea solution. The latter was faster and at that time, the beaches were near ColorColor That RustRust… Jeusans experts call this event great OxpectedOxpected For,,,,,,,,,, for,, for,,,, for,,,, for,,, for,,,, for,,,, for,,,, for,,, for,,, for,,, for,,, for,,,, for,,, for,,, for,,,, for,,, for,,,, for,,, for,,, for,,,, for,,, for,,, for,,,, for,,, for,,,, for,,, for,,,, for,,, for,,,, for,,, for,,,, for,,,, for,,,, for,,,, for,,,, for,,,, for,,,, for,,, for,,, for,,, for,,, for,,,,, for,,,, for,,,, for,,,, for,, for,.The tremendous event of oxygenation Or go, in English) or Oxygen crisisOxygen crisis. In fact, for many organisms at that time, such a amount of oxygen was toxic. It was also the time when the oxygen rate of the environment began to rise significantly, as the production of oxygen became so important that it could not allow it to be dissolved in the oceans after the BIF formation.
A volcano that reinforces the oceans in nutrients
But today, according to the article published Communication Earth and Environment By a team of researchers in Geo Sciences, including a member of the University of Tokyo MicroorganismMicroorganism The photo synthesis has just been amended. Earth’s volcanic activity will actually intensify the oxygen crisis, as well as oxygenation puffs, which maintain geo chemical archives’ signs.
In a press release from the University of Tokyo with this post, with the publication of the University Department of Earth Sciences and Planets, explain: ” The activity of microorganisms played a central role in the evolution of environmental oxygen. However, we understand that it does not immediately have environmental oxygen because of its quantity NutrientsNutrients Like PhosphatePhosphate At that time it was limited to the sea, which limited the activity of cyanobacteria. Massive geological events needed to sow the oceans with nutrients, including the development of the continents and as we suggest in our article, a severe volcanic activity, which we know. »
Alechi Tajika and his team wanted to know more. For this, researchers have built a Digital modelsDigital models Non -liner to imitate ImpressionImpression Complex for biological, geological and chemical changes during the late Archchildren before and late in the GOEE. They found that according to Digital simulationDigital simulationPeaks in large -scale volcanic activity increased Carbon dioxideCarbon dioxide Wammandiyyyyyyyyyyyyyyyyyyyyil ClimateClimate And cut the continents with rain AcidAcidWhich increased the contribution of nutrients to the sea, thus nourishing marine life. At the same time, it increased environmental oxygen in jerk and puffs, however, not very regular.
