Jurassic drop in ocean oxygen lasted a million years

[OKIsItJustMe]

https://www.exeter.ac.uk/news/featurednews/title_582654_en.html

[font face=Serif][font size=5]Jurassic drop in ocean oxygen lasted a million years[/font]

[font size=4]Dramatic drops in oceanic oxygen, which cause mass extinctions of sea life, come to a natural end – but it takes about a million years.[/font]

[font size=3]The depletion of oxygen in the oceans is known as “anoxia”, and scientists from the University of Exeter have been studying how periods of anoxia end.

They found that the drop in oxygen causes more organic carbon to be buried in sediment on the ocean floor, eventually leading to rising oxygen in the atmosphere which ultimately re-oxygenates the ocean.

Scientists believe the modern ocean is “on the edge of anoxia” – and the Exeter researchers say it is “critical” to limit carbon emissions to prevent this.

“Once you get into a major event like anoxia, it takes a long time for the Earth’s system to rebalance,” said lead researcher Sarah Baker, a geographer at the University of Exeter.

…[/font][/font]

http://dx.doi.org/10.1038/ncomms15018

[defacto7]

1. comparatively speaking,

during the Jurassic anoxia there weren't the mass plastic islands, plasic piles on the ocean floor, oil filled dead zones and radioactive contamination circulating on the Pacific Ocean currents as we have today. I speculate that a million years would be rather optimistic in an Anthopocene anoxia.

[pscot]

2. But why quibble

over a few hundred thousand years either way.

[defacto7]

3. true...

We won't be here either way. But just for the effect, it's intetesting to know how we've affected this planet.
.. or infected...