The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.

The result was: promoted by Yoninah (talk) 18:54, 27 April 2019 (UTC)

• ... that recent research has shown the presence of a deep water cycle all the way down through the Earth's lower mantle?
  • ALT1:... that minerals in Earth's transition zone and lower mantle make up the deep water cycle and have the potential to hold large amounts of water?
  • ALT2:... that up to four times the water in the ocean may be stored in Earth's mantle as part of the deep water cycle? ( Source: "The total H₂O stored in Earth’s mantle is poorly constrained, with estimates from about a quarter the mass of H₂O in the world’s oceans to ∼4 ocean masses" (Hirschmann, "Water, Melting, and the Deep Earth H2O Cycle"))
  • ALT3:... that as part of the deep water cycle, some of the water carried down by subduction may be stored as ice VII? (Source: "the stable phase of H2O should be solid ice VII in portions of the coldest slabs.")

Created by Smcminn1234 (talk), edited by RockMagnetist (DCO visiting scholar) (talk). Nominated by Smcminn1234 (talk) at 20:17, 11 March 2019 (UTC).

• large enough, written neutrally, sourced. Age ok. Can't use wikipedia as a source (footnote 1). Also, sources seem to call it "Deep water cycle", not "deep earth water cycle". Also, the sources seem to be less definite about the subject's existence than the article is...? Cas Liber (talk · contribs) 13:50, 19 March 2019 (UTC)

• @Cas Liber: The article was nominated by a student in a course that ended on 3/20. I have notified them of a problem on their talk page, but if they don't respond in a day or two I'll step in and try to fix the issues. RockMagnetist (DCO visiting scholar) (talk) 20:10, 25 March 2019 (UTC)
• I have renamed it Deep water cycle. RockMagnetist (DCO visiting scholar) (talk) 15:28, 27 March 2019 (UTC)

• Neither the nominator nor RockMagnetist has been able to respond. This will be marked for closure if there's no response in a week. Narutolovehinata5 ^tccsdnew 09:05, 6 April 2019 (UTC)
• I know it hasn't been a week yet, but RockMagetist edited a couple of days ago, and yet failed to respond to a talk page message inviting them to return here. Marking for closure for lack of responses from the nominator. Narutolovehinata5 ^tccsdnew 01:00, 10 April 2019 (UTC)

• @Narutolovehinata5: I didn't respond because I assumed that by "respond" you meant address the concerns that Casliber has with Deep water cycle. To do that, I need the time to read some of the secondary sources that I added to the reading list. Casliber is questioning the very existence of the subject! You promised me a week - please give me that week. RockMagnetist (DCO visiting scholar) (talk) 05:36, 10 April 2019 (UTC)
• Also, please note that RockMagnetist and RockMagnetist (DCO visiting scholar) are separate accounts. When logged in as RockMagnetist, I don't see messages for RockMagnetist (DCO visiting scholar). RockMagnetist (DCO visiting scholar) (talk) 05:56, 10 April 2019 (UTC)

• @Casliber: I have given the article a thorough rewrite, and it should be clear now that "deep water cycle" does exist as a subject. I have added some more "hooky" hooks, crossed out ALT1 because it is a dubious interpretation of "deep water cycle", and added myself to the credits. RockMagnetist (DCO visiting scholar) (talk) 15:57, 24 April 2019 (UTC)

great - late here in Oz. I will look tomorow Cas Liber (talk · contribs) 16:08, 24 April 2019 (UTC)

ok, we're good. I'll take first hook and it is sited ok (and ineresting) - good to go Cas Liber (talk · contribs) 14:12, 25 April 2019 (UTC)