Talk:Cerro Panizos

pre-FAC review

• The link for Vilama in the lead goes to a village in Estonia (same issue in the body of the article as well)
• "The ignimbrite shield of Panizos has been compared to paterae on Mars." - double-check your link here for paterae; it currently goes to a type of ancient Greeek bowl which doesn't seem right
• "and an occurrence of antimony-copper-uranium has been described at Paicone" - what is Paicone? Is this part of the volcano? The only other reference to a Paicone in the article is a stream of a slightly variant name

  Probably an alternative spelling, but the only source discussing Paicone in detail seems to exist only in Chile. Jo-Jo Eumerus (talk) 07:02, 19 April 2024 (UTC)

• Are there possible links for outgassing and country rocks?
• Is the Laguna Colorada caldera redlinked in a footnote the same as Laguna Colorada (caldera)?
• I'd recommend noting that the Ort source in the additional sources is an unpublished doctoral thesis so that it is more obvious as to why its not being used for the article
• Not particularly relevant to a FAC for this article, but I find it somewhat odd that this volcano doesn't seem to be in the linked navbox

This seems pretty much FAC-ready to me aside from the linking issues. Hog Farm _Talk 03:57, 19 April 2024 (UTC)

Got most of these things. I think the navbox contains only recently active volcanoes. Come to think of it, perhaps it shouldn't be here... Jo-Jo Eumerus (talk) 07:02, 19 April 2024 (UTC)

Copyediting notes

Jo-Jo, I'm going to make copyedits that may be more aggressive than you're looking for, but I'll try to make the edit summaries clear on my reasoning for each one, rather than propose them here -- that way if you agree with most of them we've saved some time. Mike Christie (talk - contribs - library) 20:51, 26 September 2024 (UTC)

Notes:

• The article title is Cerro Panizos but in para 3 of the lead we start with "Panizos". Just checking if the two can be used interchangeably?

  It seems like. "Cerro" means "Mountain" and is a descriptor. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• Is there a link available for orbs? Or a possible redlink? Without a link the lead's mention of them is a bit opaque. Is this the same thing as geodes?

  I think so, but I seem to have lost that source ... need to ask at WP:RX. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

  Got it. While they look like a geode, apparently they aren't the same thing. Put a footnote. Jo-Jo Eumerus (talk) 16:11, 27 September 2024 (UTC)

• Can the image in the infobox give some indication of scale? I can't tell if this image is four miles across or sixty miles across. An approximate width/height given in the caption would be enough; it doesn't have to be precise. It would also be good if the caption was clearer about whether it's showing the whole of the Cerro Panizos volcano or just part.

  Put a scale in the caption. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• The Panizos Ignimbrite is given as 650 cu. km in the lead but 650 sq. km in the body.

  Mended. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• In the first paragraph of the body we have the location of Cerro Panizos, referring to the volcano; then we say "Cerro Panizos proper", and name a separate mountain called Cerro Panizos that appears to be outside the volcanic complex. What is the topic of this article? A volcano, or a volcanic complex centred on that volcano? And is the mountain of that name part of that complex? Are the sources even clear on this?

  So, it seems like Cerro Panizos is the name of a) a mountain b) the volcanic complex that the mountain is part of and c) a different mountain not far from the volcanic complex but not part of it. Oh joy. I suppose that the name was originally applied to two mountains, then geologists found that one was part of a wider volcano and named it "Panizos volcano". Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• The naming leads to confusion: for example that paragraph refers to domes "north of Cerro Panizos", but which definition is this? It seems to be the mountain but I can't be sure.

  I've disambiguated that instance as "Cerro Panizos mountain" there. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• Can we get away with dropping the many repeated "Quebrada" prefixes in the hydrology section? In English one can say things like "the rivers Trent, Ouse, Thames and Severn are all important in English history"; I don't know if Spanish allows the same sort of simplification. As I recall SandyGeorgia speaks Spanish; I'll ask her for her opinion. Sandy, can one say something like "streams on the volcanic shield include many ravines: from north to south they are named Buenos Aires, Cienago, Paicone, Potrero, and Guanupta", for example?

  I think that's a reasonable suggestion. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

  Implemented this. Jo-Jo Eumerus (talk) 09:32, 28 September 2024 (UTC)

• The multiple alternate names for geographical features are a real hindrance to readability. One option would be to put all the alternates into a collapsed table of alternative names of these features, in a subsection. Another option would be to have an efn that lists all the alternative names, and use that note at the end of all the sentences that currently have alternatives given.

  Done. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• "with maximum precipitation reaching 200–400 millimetres (7.9–15.7 in) per year": if we say "maximum" why are we giving a range? Should this be "with precipitation of 200–400 millimetres (7.9–15.7 in) per year"? Or "with maximum precipitation of 400 millimetres (15.7 in) per year"?

  Fixed. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• "Wetter areas feature wetlands (such as bofedales)": I don't know what the source says, but it sounds like bofedales are the only kind of wetland that could exist in this environment, so "such as" seems a bit misleading, as if there are other kinds of wetlands in the area as well.

  Apparently cienagas are a different thing from bofedals, dunno why honestly. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• "a giant pile of rock-magma mush": both "pile" and "mush" seem rather colloquial for encyclopedic writing. Shouldn't this be something like "a mass of magma and rock"? Though do we need to mention it at all? It's relevant to the APVC but glancing down the article it doesn't seem to be directly connected to Cerro Panizos's volcanic activity. I can see it's part of the geological context though so perhaps it does need to stay.

  "Mush" at least is an accepted descriptor for mixtures of molten rock and crystals. I think it's useful contextual information. Dunno what to replace "pile" eith. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• Do we need all the detail in the geochronology in this article as opposed to a parent article? Much of it doesn't seem to have anything to do with Cerro Panizos -- e.g. the mention of Uturuncu; and three of the "flare-ups" do not seem to have affected Cerro Panizos at all. If it weren't for the long list of ignimbrites this might be less of an issue. And what does the last sentence about Bolivian eruptions tell the reader about Cerro Panizos? And the list of smaller ignimbrites -- I can't tell which of these are found in the Cerro Panizos area and which are elsewhere in the APVC.

  They are spread out across the APVC. Uturuncu is important because its uplift has drawn attention to volcanism in the region. I think it's useful contextual information. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• "during the last 66 million years (late Cenozoic)": these don't mean the same thing -- the Cenozoic covers the entire last 66 million years, so "late Cenozoic" must refer to a shorter time period.

  I have recast this a bit. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• What does it mean to say the andesites are subordinate? That there is less andesite than dacite?

  Yes. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• "Both rocks constitute a peraluminous potassium-rich calc-alkaline suite": I think "suite" is an unnecessarily technical term here, unless it has a specific meaning I'm unaware of. Also, "both ... constitute" is odd phrasing -- do the dacites and andesites independently constitute this suite? Or do they, together, constitute this suite? If the former I'd make it "The dacides and andesites each constitute ..."; if the later, then "Together, these rocks constitute ..."

  Yeah, they form a family of volcanic rocks together. Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

• Is there a possible link for "accessory phase"?

  I am not familiar with one, sorry, other than this external link. Something for a footnoted explanation perhaps? Jo-Jo Eumerus (talk) 07:53, 27 September 2024 (UTC)

I'm going to stop there for now and leave the eruption history section till after these are resolved, and you've addressed anything you disagree with from the copyedit I've done. Mike Christie (talk - contribs - library) 01:14, 27 September 2024 (UTC)

Follow-up comments:

• Reading the first para of the body, I think the intention is that "Cerro Panizos" should refer to the entire volcanic edifice, 40 km across, throughout the article. The only exceptions are the two mountains, mentioned in this paragraph and nowhere else. Is that right? If so I'd change the first sentences of that paragraph to something like "Cerro Panizos is a 40-kilometre-wide (25 mi), gently sloping shield-shaped volcano of ignimbrite surrounding a 10–15-kilometre-wide (6.2–9.3 mi) lava dome semicircle. It lies in the Cordillera de Lipez mountain range of the Andean Altiplano-Puna high plateau. There are two mountains also named "Cerro Panizos": one is a c. 5,300 metres (17,400 ft) lava dome in the southeastern semicircle; the other is a 5,259 metres (17,254 ft) high mountain located south of the volcanic complex. This article is about the volcano and associated shield, not the individual mountains." This sort of self-reference is not forbidden by MOS:SELFREF. I changed the first sentence to be more purely definitional because of this confusion.

  Yes. I don't think that a self-reference is the best solution here. I am thinking to say rather that the other Panizos is unrelated and use the maps as a source for this claim, since they illustrate that it is located away from the volcano. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

• I see you haven't dropped all the Quebradas, per the question I asked Sandy to comment on; if you think that's OK I would go ahead and do something like that (and also perhaps for the four Cerros in the previous subsection), or we could wait for Sandy.

  That seems fine for me, but I confess that I don't know the Spanish naming conventions. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

• "Peñas Coloradas/Peña Colorada" is another candidate for a footnote giving the alternative name.

  Yeah, I just missed that one. IMplemented. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

• Can we do something like "The volcano has erupted dacite, which contains numerous crystals and has a homogeneous composition; and lesser quantities of andesites" to avoid the slightly technical "subordinate"?

  That works. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

• Yes, a footnote for "accessory phase" would be good. Perhaps a redlink too? Or add an entry to glossary of geology and link to that?

-- Mike Christie (talk - contribs - library) 12:38, 27 September 2024 (UTC)

• Added. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

From a read through of the final section:

• I see neither "downsag" nor "ring vent" is in glossary of geology; perhaps add entries and link to them?

-- Mike Christie (talk - contribs - library) 12:57, 27 September 2024 (UTC)

• This is one of these words where the normal use of the words "sagging down" and "ring" is applicable, not specific jargon. I tend to leave these words undefined. Jo-Jo Eumerus (talk) 16:06, 27 September 2024 (UTC)

Jo-Jo, I think I'm done here. If you bring this back to FAC I'll see it as I have the page watchlisted. Mike Christie (talk - contribs - library) 17:15, 27 September 2024 (UTC)