Talk:San Pedro (Chile volcano)

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Review: February 26, 2018. (Reviewed version).

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GA Review

This review is transcluded from Talk:San Pedro (Chile volcano)/GA1. The edit link for this section can be used to add comments to the review.

Reviewer: Mike Christie (talk · contribs) 20:04, 25 February 2018 (UTC)[reply]

I'll review this. Mike Christie (talk - contribs - library) 20:04, 25 February 2018 (UTC)[reply]

I'm copyediting as I go; please revert if I mess anything up.

Not issues for GA:
- There are four dead links you may want to fix: [1], [2], [3], [4].
- Footnotes of the form "373,374" should be "pp.", not "p."; I see one is "p. 735, 735" -- a mistake?

Remedied these.

This region of volcanism spans the borders of Peru, Bolivia, Chile and Argentina and contains a number of individual volcanic centres, including the world's two highest volcanoes Ojos del Salado and Llullaillaco. Not really necessary in the lead; suggesting cutting this and merging the first two lead paragraphs.

Done.

6,145 metres (20,161 ft), 6,142 metres (20,151 ft) or 6,163 metres (20,220 ft) high San Pedro: ugly; can we find a more readable way of giving the alternative heights? Maybe pick an authoritative one or the most recent, and give the others in a note?

Took a stab at it. The problem with giving a certain height as the "authoritative" one is that I am not certain which one that would be - as you can read on Monte Pissis heights of such mountains are contentious, and while at Pissis & Salado the high profile of the mountains means that eventually we do settle on one San Pedro being a lower profile peak most likely doesn't have any authoritative height.

prismatically joined blocks: what does this mean?

Would "jointed" be clearer?

The quoted source writes: "prismatic jointed blocks", which is a term commonly used in vulcanology for this phenomenom — Preceding unsigned comment added by 91.44.151.224 (talk) 22:03, 17 October 2018 (UTC)[reply]

instead features groves and radial ridges: should this be "grooves"?

Yes.

which dropped down an elevation difference of about 2,845 metres (9,334 ft): not sure what is meant by "dropped down" here.
a lava dome at an elevation of 5,000 metres (16,000 ft) dots the southwestern flank of San Pedro: "dots" requires a plural subject.
Either cone, San Pedro volcanic rocks belong to...: suggest "In each cone, San Pedro volcanic rocks belong to..."
Should the link to phreatic to go phreatic eruption instead?
one eruption reported from 1877 may instead have occurred in 1891: that seems odd enough to be worth an inline explanation, if it's easy to give one.

-- Mike Christie (talk - contribs - library) 20:45, 25 February 2018 (UTC)[reply]

Responded to some issues; will address the others tomorrow. Jo-Jo Eumerus (talk, contributions) 21:37, 25 February 2018 (UTC)[reply]

Got the other issues. Jo-Jo Eumerus (talk, contributions) 10:37, 26 February 2018 (UTC)[reply]

Two points left: it's "prismatically" that is baffling me. To me it means "in the manner of a prism" and I can't see what it's telling me. Is it a standard technical term? Second, the "dots" point is unaddressed. Once can say "plants dot the landscape", or use a mass noun like gravel to make a plural that functions like a singular: "gravel dots the ground", but I don't think you can say "a tree dots the landscape". How about " a lava dome at an elevation of 5,000 metres (16,000 ft) on the southwestern flank of San Pedro seems to be a parasitic vent"? Mike Christie (talk - contribs - library) 11:22, 26 February 2018 (UTC)[reply]

Attempted another rewrite on "prismatically". As for "dots", the only issue with the rewrite is that it is fairly similar to the source text The southwestern dome is situated at about 5000m on the southwestern flank of San Pedro, and overlies pumice flow H; I'll see about another wording. Jo-Jo Eumerus (talk, contributions) 11:29, 26 February 2018 (UTC)[reply]

It's similar wording, but "on the southwestern flank" is going to be hard to avoid. I think it would be OK. Mike Christie (talk - contribs - library) 11:49, 26 February 2018 (UTC)[reply]

Attempted a rewording with "lies" instead of "dots". Jo-Jo Eumerus (talk, contributions) 11:59, 26 February 2018 (UTC)[reply]

That does it. Promoting. Mike Christie (talk - contribs - library) 12:04, 26 February 2018 (UTC)[reply]

Sources to use

[5] Jo-Jo Eumerus (talk) 10:46, 26 April 2023 (UTC)[reply]

Also noting that the Imbudo ignimbrite and Donald Payne's ash should probably be mentioned. Jo-Jo Eumerus (talk) 21:10, 29 November 2024 (UTC)[reply]

Featured picture scheduled for POTD

Hello! This is to let editors know that File:Volcán San Pedro, Chile, 2016-02-09, DD_18.JPG, a featured picture used in this article, has been selected as the English Wikipedia's picture of the day (POTD) for February 4, 2024. A preview of the POTD is displayed below and can be edited at Template:POTD/2024-02-04. For the greater benefit of readers, any potential improvements or maintenance that could benefit the quality of this article should be done before its scheduled appearance on the Main Page. If you have any concerns, please place a message at Wikipedia talk:Picture of the day. Thank you! — Amakuru (talk) 20:21, 18 January 2024 (UTC)[reply]

San Pedro is a composite volcano in northern Chile and one of the tallest active volcanoes in the world. It is part of the Andean Volcanic Belt and, like other Andean volcanoes, was formed by the subduction of the Nazca Plate beneath the South America Plate. San Pedro is formed of two separate edifices, the Old Cone and the Young Cone, and is adjoined to a neighbouring volcano, San Pablo. The Old Cone was active over one hundred thousand years ago and was eventually truncated by a giant landslide that removed its northwestern side. Within the landslide scar lava flows and pyroclastic flows constructed the Young Cone as well as the lateral centre La Poruña. Some eruptions have been reported during historical time, and presently the volcano is fumarolically active. This photograph shows San Pedro in the foreground, with San Pablo visible behind it to the right.

Photograph credit: Diego Delso

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