Earth’s ancient oceans were probably much saltier than they are today


A new study has taken a step towards understanding the chemistry of the early ocean. This suggests that the Earth’s ancient oceans were much saltier than they are today. The oceans may have contained a salt level as high as 7.5%. Today’s oceans are by comparison about 2.5% salt.

Scientists wanted to determine how much stable halogen material is found on Earth. The halogen material includes elements such as fluorine, chlorine (found in salt), bromine and iodine, which produce a variety of salts when reacted with metals.

Halogen is an essential material in some of the most fundamental processes related to planet formation and evolution. The presence of halogens plays a crucial role in the essential nature of the oceans to make life on Earth possible.

Graduate student Meng Guo said, “Seawater chemistry dictates not only the acidity of the ocean, but also the road carbon dioxide is divided between the atmosphere and the sea. “

Scientists have created a new method using a new algorithmic tool to measure the global abundance of halogens. They also gathered the latest science on how other elements orbit through The surface of the earth and inner layers.

Their results suggest that chloride and other halogens were primarily expelled from the planet’s interior during the Earth’s first 500 million years. This brought them closer to the Earth’s crustal surface and oceans – and then cycled most of them back into the mantle afterwards.

Korenaga said, “Our finding is contrary to conventional wisdom.”

The study appears in the journal Proceedings of the National Academy of Sciences.





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