How did the oceans of planet Earth arrive?
It is vexatious that if you place the question on the web you, I understand you will get 11 million results. The official version of how the oceans arrived is not completely understood. Some would say large blocks of ice arriving would herald the arrival of the oceans; others would say there is a link with volcanic activity.
I suppose, in a way, both statements are true. However, to make a statement as to how the oceans of planet Earth would make an arrival is just plain silly, you must build your case.
4,600 million years ago the Earth was formed. You must say in passing that the Earth with the Solar planets contain more than 99 percent of the angular momentum of the Solar System, and now explain this.
Most stars are members of an initial binary. The thrust disc of our star, the Sun, would take a few molten orbs from its opposite number. One of those molten orbs became planet Earth. Therefore we are nothing to do with the Sun whatsoever.
What happened next?
Shortly after the arrival of planet Earth, a solid iron, silicon, Mars-sized projectile would impact planet Earth 4,500 years ago. This impact is crucial for our very existence today.
I would state that our oceans would arrive as at least 50 kilometres thick of ice on that projectile. Certainly after arrival water would gush from volcanoes. The planet would at its surface go solid due to the icy waters and a fairly shallow ocean would cover the whole of planet Earth.
What do I have to support this statement?
Zircon is actually the oldest known mineral on Earth. Samples found from Western Australia are more than 4,400 million years old. They must have been produced in the presence of water. Therefore as far as I am concerned the oceans of planet Earth arrived as ice on the Mars-sized projectile. Q.E.D.
In attendance with the Mars-sized projectile were a host of asteroids if the age and date of the craters on the Moon are anything to go by. However, you are not home and dry yet. The land that you stand on today did not make an arrival until 240 million years ago. You may have found the occasional volcanic atoll to stand on, previous to this.
When the Mars-sized projectile would impact planet Earth, a gaping shaft would release molten matter which would in the first instant become our Moon.
For a short time, little molten matter would be released. This would be overcome by the icy waters, go solid, and sink below the molten material in planet Earth. The material would be subjected to high temperature and pressure, and would become the diamonds that would arrive on the continent of Africa.
The impact of the Mars-sized projectile would provide a safety valve and the molten material produced would eventually become solid 240 million years ago and become Pangaea: name for a single supercontinent that formed and present land masses plus their continental shelves can be fit into this one continent.
Oxygen levels at this time would be equal to those today and herald the arrival of the dinosaurs. However, fish are the most ancient form of life with a history of 450 million years.
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