Moon's crust may have formed from 'slushy' magma ocean long ago


Oct 22, 2019
The article is interesting read and cited, Formation of the Lunar Primary Crust From a Long-Lived Slushy Magma Ocean,, 13-Jan-2022.

My observation. The paper is detailed and indicates the lunar magma ocean postulated after the giant impact event that created the Moon, is dated 4.48 billion years ago. The lunar magma ocean lasted perhaps 200 million years or so. Thus, the lunar magma ocean lasted until perhaps 4.28 billion years ago. There are indications of zircons on Earth dated 4.2 to 4.3 billion years old. According to the postulated events described when combined with the Earth, the Earth had a crust in the Precambrian when apparently the Moon was still cooling from the magma ocean to form the lunar crust. The Moon initially would be 3-5 earth radii distance from Earth (compared to present mean near 60.3 earth radii) when the lunar magma ocean appeared, after the giant impact event. The Precambrian time here is crowded with catastrophism and reports of life on Earth dated close to 4.3 billion years ago. “WASHINGTON (Reuters) - Microfossils up to almost 4.3 billion years old found in Canada of microbes are similar to the bacteria that thrive today around sea floor hydrothermal vents and may represent the oldest-known evidence of life on Earth, scientists said on Wednesday.” … “It shows that some microbes have not changed significantly” since Earth’s early times, Papineau said. Earth formed about 4.5 billion years ago and the oceans appeared about 4.4 billion years ago. If the fossils are indeed 4.28 billion years old, that would suggest “an almost instantaneous emergence of life” after ocean formation, Dodd said.” Ref - 'Canadian bacteria-like fossils called oldest evidence of life',, 01-March-2017.

Something to chew on :)



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