The onset of the Great Ordovician biodiversity event is not due, as previously thought, since meteorite bombardment of the Earth.
Swedish and Danish geophysicists have shown that the onset of the Great Ordovician biodiversity event is not due, as previously thought, since meteorite bombardment of the Earth. A study published in the journal Nature Communications.
The experts found that in the Ordovician period of meteorite bombardment of the planet started to 468 million years ago, i.e. 2-3 million years after the same events of biodiversity.
To such conclusions scientists came after the Dating of the zircon crystals, discovered in one of the Swedish quarries that contain many ancient meteorites.
The great Ordovician biodiversity event started around 471 million years ago and lasted for about 25 million years. During this period the planet has experienced a sharp increase in the number of species of marine and terrestrial organisms. Many scientists attribute the Ordovician event meteorite bombardment of the Earth. A new study refutes this view.
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