MidgePhoto
π§π Greg CocksEarth May Have Had A Ring System 466 Million Years Ago
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https://phys.org/news/2024-09-earth-million-years.html <-- shared technical article
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https://doi.org/10.1016/j.epsl.2024.118991 <-- shared paper
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βHIGHLIGHTS:
β’ Earth may have had a ring during the middle Ordovician, from ca. 466 Ma.
β’ Breakup of an asteroid passing within Earth's Roche limit likely formed the ring.
β’ Among several features preserved is a near-equatorial band of impact craters.
β’ Shading of Earth by the ring may have triggered a global icehouse periodβ¦β
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#GIS #spatial #mapping #model #modeling #geology #structuralgeology #planetarygeology #rings #climatechange #paleoclimate #Ordovician #asteroid #rochelimit #craters #impactcrater #crater #icehouse #meteorite #platetectonics #HirnantianIcehouse
--
https://phys.org/news/2024-09-earth-million-years.html <-- shared technical article
--
https://doi.org/10.1016/j.epsl.2024.118991 <-- shared paper
--
βHIGHLIGHTS:
β’ Earth may have had a ring during the middle Ordovician, from ca. 466 Ma.
β’ Breakup of an asteroid passing within Earth's Roche limit likely formed the ring.
β’ Among several features preserved is a near-equatorial band of impact craters.
β’ Shading of Earth by the ring may have triggered a global icehouse periodβ¦β
--
#GIS #spatial #mapping #model #modeling #geology #structuralgeology #planetarygeology #rings #climatechange #paleoclimate #Ordovician #asteroid #rochelimit #craters #impactcrater #crater #icehouse #meteorite #platetectonics #HirnantianIcehouse
Earth may have had a ring system 466 million years ago
In a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that Earth may have had a ring system that formed around 466 million years ago, at the beginning of a period of unusually intense meteorite bombardment known as the Ordovician impact spike.
Norobiik @
