Chimiocline
The chimiocline is the Interface existing between different Couches from Eau, in a Mer, a Lac, when those do not mix. That thus implies that there exists a balance between the various layers of water. In general, the layers of surface water are more oxygenated that the deeper layers, since they are fed by the Atmosphère. The Anoxie of the sub-bases can be caused by the important production of Sulfure of hydrogen by Micro-organismes Benthique S. On the level of the chimiocline can develop Bactéries Anaérobie S.
An assumption making it possible to explain massive extinction S of Espèce S, such that which occurred at the end of the Permien, relates to the variation of the chimiocline. This one reaching the surface of the ocean following an important warming of planet, a great quantity of hydrogen sulfide is released in the atmosphere, which generate important modifications of the chemical composition of this one, a destruction of the layer of ozone, and finally the disappearance of many species, as well animal as vegetable.
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