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For the most part, the article is quite well written. Nice work! The technical language used seems necessary and appropriate for the subject matter, rather than excessive jargon.
"Its peak height is most commonly given as 5,808 metres (19,055 ft)" — to avoid WP:OR, a secondary source explicitly stating that this figure is most common is needed. See WP:RS/AC Earwig check was clean "Occasionally, the summit area is covered with snow" This is not supported by the source, which says nothing about how often snow occurs. The most you could say is that it was once imaged with snow on it, but that seems rather trivial.
That can't be done - we don't have secondary sources on elevation, really; Lucchi 2009 is the most recent one and is about field work so probably the most reliable for WP:RS purposes. I've put "recent" instead of "common". Regarding the snow thing ... I dunno. Many of these mountains are ice-free due to the dry climate so it's a bit more notable than otherwise, but we only have that source as confirmation. Jo-Jo Eumerus (talk) 14:20, 18 January 2021 (UTC)[reply]
I don't doubt that the ice thing is true (you're the expert) but it's not directly stated by the source, so I have to conclude that it is OR. (t · c) buidhe18:36, 18 January 2021 (UTC)[reply]
" Tertiary ignimbrites," Wikipedia article Tertiary says the term is mostly obsolete. Is there any way to be more specific about the time frame, i.e. state explicitly how long ago these formed?
As stated above, I don't doubt that the ice thing is true (you're the expert) but it's not directly stated by the source, so I have to conclude that it is OR. (t · c) buidhe17:04, 6 March 2021 (UTC)[reply]