MULTIZ321
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ROYAL HOLIDAY CLUB RHC (POINTS)
Oxygen Had to Fight a 'War' for Earth's Atmosphere
By Peter Kelley, University of Washington/ Oxygen/ Science and Technology/ Futurity/ futurity.org
'Earth’s oxygen levels rose and fell more than once hundreds of millions of years before the planet-wide success of the Great Oxidation Event about 2.4 billion years ago, according to new research.
The evidence comes from a new study that indicates a second and much earlier “whiff” of oxygen in Earth’s distant past—in the atmosphere and on the surface of a large stretch of ocean—showing that the oxygenation of the Earth was a complex process of repeated trying and failing over a vast stretch of time....."
The Jeerinah Formation in Western Australia, where researchers found a sudden shift in nitrogen isotopes. “Nitrogen isotopes tell a story about oxygenation of the surface ocean, and this oxygenation spans hundreds of kilometers across a marine basin and lasts for somewhere less than 50 million years,” says lead author Matt Koehler. (Credit: Roger Buick/U. Washington)
Richard
By Peter Kelley, University of Washington/ Oxygen/ Science and Technology/ Futurity/ futurity.org
'Earth’s oxygen levels rose and fell more than once hundreds of millions of years before the planet-wide success of the Great Oxidation Event about 2.4 billion years ago, according to new research.
The evidence comes from a new study that indicates a second and much earlier “whiff” of oxygen in Earth’s distant past—in the atmosphere and on the surface of a large stretch of ocean—showing that the oxygenation of the Earth was a complex process of repeated trying and failing over a vast stretch of time....."
The Jeerinah Formation in Western Australia, where researchers found a sudden shift in nitrogen isotopes. “Nitrogen isotopes tell a story about oxygenation of the surface ocean, and this oxygenation spans hundreds of kilometers across a marine basin and lasts for somewhere less than 50 million years,” says lead author Matt Koehler. (Credit: Roger Buick/U. Washington)
Richard