Template:Did you know nominations/Siderian
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Siderian
- ... that the Siderian is the earliest internationally recognized period on the geological timescale?
- ALT1: ... that oxygen levels in the Siderian Period rised to at least 10,000 times its original level? Source: Catling & Zahnle (February 2020). "The Archean atmosphere".
- ALT2: ... that a magma plume breakout occurred during the Siderian Period on a global level? Source: Barley et al. (September 2005). "Late Archean to Early Paleoproterozoic global tectonics, environmental change and the rise of atmospheric oxygen".
- Reviewed:
- Comment: Hey, I was expanding the Siderian page a lot recently, and I was wondering if it's eligible to be run as a DYK? This is my first nomination in this area, and while I wasn't able to find a picture, I have some ideas regarding what I've added on the article in the past week.
Although, there was one caveat I wanted to point out: for the ALT2 hook, the information is within a two-sentence paragraph, with it as the first sentence and the reference at the paragraph's end. I have read the rules regarding the insufficiency of paragraph references, but I still included this hook because I believe it presents itself well, and I might as well give it a chance.
5x expanded by Alex26337 (talk).
Number of QPQs required: 0. Nominator has fewer than 5 past nominations.
— Alex26337 (talk) 14:30, 2 December 2025 (UTC).
- Article was expanded in the span of the last week. Sourcing looks fine, images have appropriate licences. No copyvio detected, qpq not required. First hook is interesting, ALT01 is meh, and ALT12 is too technical (I have no idea how interesting it is as I don't really understand it).
- Shouldn't the first hook contain "of Proterozoic Eon"? According to the source, Hadean and Archean were before Siderian. Pinging @Alex26337:. Artem.G (talk) 19:14, 2 December 2025 (UTC)
- @Artem.G: While the Hadean and Archean do occur before the Siderian, they are not classified as a period of time, but rather as an eon and era respectively. According to the ICS's classification, The use of the Siderian is the first (or earliest) time where eras are subdivided into periods (see Geologic time scale § Divisions of geologic time). — Alex26337 (talk) 19:33, 2 December 2025 (UTC)