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Hi, I have read through this very interesting article. It's well written and generally very clear. I have suggestions for improving the text (below). I have not yet checked the sources, but will do so after the nominator has had a chance to respond to my initial comments. Best wishes
Mertbiol (
talk)
10:19, 28 June 2023 (UTC)reply
Lead section
I suggest moving "in the central Andes" from the second sentence to the first, so that the first sentence reads "Lazufre is a Quaternary volcanic dome in the central Andes, on the border between Chile and Argentina."
Not done. You have just duplicated "in the central Andes" so that it now occurs in both the first and second sentences.
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
No. The third sentence of the first paragraph is still incomplete: "The CVZ includes a number of calderas and supervolcanoes that have"...?
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
I suggest starting a new paragraph with "Two major faults..."
I suggest moving the final two sentences of the current second paragraph (i.e. from "The volcanic rocks overlie...") so that they follow the discussion of the composition of the volcanic rocks. (After "Lastarria and Cordón del Azufre have been active for the past 600,000-300,000 years." may be a good place.)
I disagree, I think that "scarce" implies rarer than "infrequent". I think it would be better to quantify the amount of precipitation, rather than relying on an adjective. Can you provide a figure for the average annual rainfall in mm?
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
In that case, please find a way of rephrasing this, so that is clear exactly what you mean. "Scarce" is not a helpful word here.
Mertbiol (
talk)
21:10, 8 July 2023 (UTC)reply
Ambiguity is never helpful - we need clarity. Do you mean low frequency precipitation or low quantity precipitation or both? What does the source say? You don't like "infrequent" - that's fine. Find a better way of saying it. "Scarce" cannot stay.
Mertbiol (
talk)
22:06, 8 July 2023 (UTC)reply
Scarce is commonly used in this context, so clearly not everybody finds it unacceptably ambiguous. Besides, you are presuming that we should be precise; without sources specifying what it means, ambiguity is the only correct word choice.
Jo-Jo Eumerus (
talk)
20:10, 9 July 2023 (UTC)reply
Please quote here EXACTLY what the source says and then we can work out how best to rephrase. It doesn't matter what other people think, I do find "scarce" unacceptably ambiguous.
Mertbiol (
talk)
20:27, 9 July 2023 (UTC)reply
You wrote "The uplift occurs over an elliptical area..." in the first paragraph and "the source of the uplift" in the third paragraph - you should either use the definite article every time or never use it.
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
This doesn't make any sense. You are using "uplift" here as a noun. It's no more "verb-related" here than in the rest of this article. It needs the definite article here.
Mertbiol (
talk)
21:10, 8 July 2023 (UTC)reply
Please de-link
magma chamber in the final sentence of the third paragraph and link it instead in the preceding sentence.
Please de-link
magma at the start of the fifth paragraph. If you have not followed my suggestion of linking
magma in the "Geography and geomorphology" section, you will need to link it in the fourth paragraph of this section.
I suggest deleting "of the uplift" from " points to new magma as the cause of the uplift" in the fifth paragraph.
I suggest deleting "and is" from "and is caused by repeated sill-like..."
Please delink
sill in the fifth paragraph (it is linked in the third paragraph).
Should "as it is not associated with a caldera" be "as it is not associated with a known caldera" or "as it is not associated with a confirmed caldera"?
Sorry, a lack of evidence can never be conclusive. You definitely need to qualify this, especially as "the region is rarely visited."
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
But you have said elsewhere "There is no clear evidence of a caldera at Lazufre" (Geography and geomorphology section) and "It may be a volcano that will in the future develop a caldera." (lead section). Why are you being so definite here, if you are being more circumspect elsewhere in the article?
Mertbiol (
talk)
21:13, 8 July 2023 (UTC)reply
Calderas that don't exist yet don't count. The source for the "no clear" statement argues there is weak evidence for the existence of a caldera, but no other source agrees. I take that as meaning, no, consensus is that there isn't a caldera.
Jo-Jo Eumerus (
talk)
21:55, 8 July 2023 (UTC)reply
No consensus is not proof that something does not exist!!! You have a choice - EITHER say throughout the article that there very definitely is no caldera OR say that there no caldera has been detected (which leaves open the possibility that one might develop or be found in the future). At the moment you are saying both of these things in different parts of the article. Pick one and go with it.
Mertbiol (
talk)
22:06, 8 July 2023 (UTC)reply
In that case you are breaching
WP:SYNTH. There is "no consensus that it does exist" because "The source for the "no clear" statement argues there is weak evidence for the existence of a caldera". You are seeing a consensus where there is none. Please just add the word "known" to communicate the uncertainty and then we can move on.
Mertbiol (
talk)
20:27, 9 July 2023 (UTC)reply
I suggest changing "size comparable to that of supervolcanoes" to "comparable to that of a supervolcano" or "comparable to that of many supervolcanoes".
You have written "central Andes" in the lead section (second sentence) and "Central Andes" here. You either need to be consistent or (if you are intentionally referring to different areas) clarify the difference between the two (possibly with a footnote or link).
Mertbiol (
talk)
17:35, 8 July 2023 (UTC)reply
Please change "did not erupt" to "have not erupted" in the first sentence of the second paragraph.
I suggest changing "The volcano is remote, thus renewed activity..." to "Since the volcano is remote, renewed activity..." at the start of the final sentence.
I have checked the following references: [6], [7] (see below) [8], [9], [10], [11], [12] (see below), [14] (see below), [16], [18] (see below), [19] (see below), [23], [24], [25] (see below), [27], [28], [29], [31], [32], [33], [34], [37], [38], [39], [41] (see below), [42], [46], [47], [48] (see below), [49], [52], [54], [56], [57], [58], [59] , [60], [61], [62], [63], [65], [66] (see below) [68], [70], [71] and [76].
Reference [7] (Pritchard and Simons 2004 p. 2) does not appear to support "The city of Antofagasta is about 250 kilometres (160 mi) northwest of Lazufre."
Reference [12] (Ruch et al. 2008 p. 342) does not support "surrounded by a ring of Quaternary volcanoes" - appears to be page 341 instead.
Reference [14] (Perkins et al. 2016 p. 1094) does not appear to support "fed through a network of radial and circumferential lineaments" - appears to be p. 1092 (Ref. [24]) instead.
Reference [18] (Robidoux et al. 2020 p. 2) does not appear to support "the Nazca Plate subducts at a rate of 6 centimetres per year (2.4 in/year)"
Reference [19] (Henderson and Pritchard 2013 p. 1358) does not appear to support "subdivided into four segments: The Northern Volcanic Zone, the Central Volcanic Zone (CVZ), the Southern Volcanic Zone and the Austral Volcanic Zone."
References [25] and [66] (Henderson et al. 2012) - in the pdf from ResearchGate, the page numbers are 594 to 596 - the paper does not have pages 588 and 589.
This is the source: Henderson, Scott T. (2012). Searching for Activity in the Andean Central Volcanic Zone: Thermal Anomalies, Seismicity, and Deformation Over a Timespan of 1-20 years. XIII Congreso Geológico Chileno. Antofagasta, Universidad Católica del Norte – via
ResearchGate. I accessed this paper via ResearchGate (as I presume you did) but the page numbers in that pdf do not match the ones that you have given. If you have accessed it from a different source please provide a doi. If you have used the same source, please correct the page numbers.
Mertbiol (
talk)
19:08, 10 July 2023 (UTC)reply
Reference [41] (Henderson and Pritchard 2013 p. 1367) does not appear to support "No uplift was observed before 1995–1997" - instead it says "Our analysis confirms no deformation between 1995 and 1997" - no comment is made on that page about uplift before 1995.
Reference [48] (Perkins et al. 2016 p. 1092) does not appear to support "The distribution of volcanic vents and direction of lava flows in the Lazufre region indicates that the dome began to form about 400,000 years ago" - should this be page 1094? Also I suggest "indicates that the dome began to form" is changed to "is consistent with the dome forming" - to better match the tone of the source ("indicates" is too strong).
Henderson, Scott T. (2012) is in the incorrect place in the alphabetical list of sources.