Talk:Canfield ocean

Remove mention to Peter Ward and focus on the theory?
I would like to remove the mention of Peter Ward in this article. The work by Peter Ward is not relevant in explaining the Canfield Ocean. This page should instead focus on the hypothesis put forward by Daniel Canfield and explain what his theory suggested.- SeaMonsterFromTheDeep 10:30 PM, 1 March 2016 (UTC)

issues template

 * I've removed the issues template. There is now a reference to the original article, Nature, which should I think also deal with notability.   Buck  ets  ofg  23:35, 6 August 2011 (UTC)
 * Adding peackock words - a seminal paper - do not establish any notability; being publish in Nature is a good point for it, but such notability goes for the author more than for the expression "Canfield ocean", which, naturally, is not used at all in that article. (i.e. we do not have an article about Newton's gravity theory because Newton publish it, but because others used it - is anyone using Canfield's?
 * You have not addressed context, and one (self-)reference is quite not enough.
 * So, I reinstated the template (changing from add references to add _more_ references) . That the stub is recent is a reason not to delete, but the issues are there, young or old. - Nabla (talk) 09:57, 7 August 2011 (UTC)

Rename page to Euxinia?
The leading reference on page 452 (top paragraph) describes the euxinic conditions, which lead to the mass extinction - based on an anoxic and sulfidic ocean. http://ebme.marine.rutgers.edu/HistoryEarthSystems/HistEarthSystems_Fall2008/Week5b/Canfield_Nature_1998.pdf Explanation https://en.wiktionary.org/wiki/euxinic There are 3 main studies in this page which all relate to euxinic conditions, after renaming to Euxinia, the studies could be listed under "Models". Prokaryotes (talk) 01:15, 21 September 2013 (UTC)
 * Euxinia currently redirects here https://en.wikipedia.org/wiki/Anoxic_event Another related term used is https://en.wiktionary.org/wiki/dysoxic Example Ocean Acidification in Earth’s Past: Insights to the Future – James Zachos
 * Some more infos Oceanic Euxinia in Earth History: Causes and Consequences http://www.annualreviews.org/doi/abs/10.1146/annurev.earth.36.031207.124256 Prokaryotes (talk) 02:23, 21 September 2013 (UTC)
 * 2 more studies explain the relation: Conditions required for oceanic anoxia/euxinia: Constraints from a one-dimensional ocean biogeochemical cycle model and Massive release of hydrogen sulfide to the surface ocean and atmosphere during intervals of oceanic anoxia Prokaryotes (talk) 02:35, 21 September 2013 (UTC)
 * And finally a study of the current edition of Geology (Sep 2013) Reconstructing the history of euxinia in a coastal sea Prokaryotes (talk) 02:52, 21 September 2013 (UTC)

Definition of Euxinia = the presence of free sulfide (Kemp et al., 2009) http://geology.gsapubs.org/content/41/4/523.full ) Prokaryotes (talk) 03:26, 21 September 2013 (UTC)


 * Weakly favor the rename. I'd never heard of Canfield or his euxinic ocean hypothesis, but euxinic conditions certainly don't favor aerobic life. Better to use a meaningful name rather than an obscure (to me anyway) academic's. It is an interesting  idea; have to read up a bit. --Pete Tillman (talk) 22:25, 22 September 2013 (UTC)
 * Overview on the science: Anoxia and Euxinia Ocean Environmental Change Prokaryotes (talk) 01:46, 23 September 2013 (UTC)

Strangelove Ocean
This study connects Strangelove Ocean to Euxinia http://siberia.mit.edu/sites/siberia.mit.edu/files/articles_news_press/Meyer-Payne-EPSL-2011.pdf Quote = Two contrasting scenarios could relate euxinia to the associated state of marine productivity during the Permian and Triassic. Climate warming at the end of the Permian could have reduced rates of physical circulation, leading to oceanic anoxia and to a collapse of the biological pump (Rampino and Caldeira, 2005)

Above study points to this study, which gives more insights on Strangelove Ocean, Major perturbation of ocean chemistry and a ‘Strangelove Ocean’ after the end-Permian mass extinction Though maybe Strangelvoe Ocean should become an article on it's own, but given the short page here and possible renaming to a more general term like Euxinia could be enough to have 1 section for the Strangelove Ocean model. There is also the article on Anoxic events in general, https://en.wikipedia.org/wiki/Anoxic_event Prokaryotes (talk) 03:12, 21 September 2013 (UTC)

Stub
I have decided to classify this article as a stub. After removing the peacock words highlighted by others, there remained no indication, in particular in secondary sources, of the notability or acceptance of this theory. The coverage is simply not encyclopedic. Hairy Dude (talk) 16:53, 12 February 2021 (UTC)


 * Agree that this article appears unencyclopedic from current sources. Had a look into secondary sources, and this review paper dedicates 3 pages to the Canfield model - which should cover notability. They conclude:
 * "there is compelling evidence for episodes of widespread oceanic euxinia in the Proterozoic. In our opinion, however, the evidence for a persistently euxinic global Proterozoic ocean is not strong."
 * Unsure if this is straying into WP:OR but there is plenty of literature discussing the model, albeit no consensus of acceptance. Jtomf (talk) 20:02, 22 May 2021 (UTC)

Wiki Education assignment: Biogeochemical Cycles
— Assignment last updated by MethanoJen (talk) 20:04, 13 January 2023 (UTC)