Difference between revisions of "Oceanic Anoxic Events"

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* [http://en.wikipedia.org/wiki/Oceanic_anoxic_event Oceanic anoxic events], [[Wikipedia]]
* [http://en.wikipedia.org/wiki/Oceanic_anoxic_event Oceanic anoxic events], [[Wikipedia]]
[[Category:Palaeo Events]]
[[Category:Palaeo events]]
[[Category:Carbon model]]
[[Category:Carbon model]]
[[Category:Model Applications]]
[[Category:Model applications]]

Revision as of 11:32, 16 April 2008

Cretaceous Ocean Anoxic Events

Most seafloor sediments today are well-oxygenated and as a result are host to communities of organisms that make a living by decomposing the detritus that falls out of the waters above. It has not always been so. During certain periods in the Earth's history, organic-rich black shale sediments were laid down. The prevalence of shales from these times is attributed to low levels of oxygen in the oceans. Low levels of oxygen excluded most organisms, with the result that organic remains accumulated untouched by scavengers or bacteria.

How might the lack of oxygen have impacted on the Earth System? You can explore one aspect of this using the nitrogen-phosphorus model.

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This website is in its early stages of use. If you find it difficult to run a model in the way described, or find any other problems, your feedback will help us improve the site for future users.

External links