Talk:Ampato/GA1

GA Review

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Reviewer: Ceranthor (talk · contribs) 00:25, 19 July 2018 (UTC)

I will review this. ceranthor 00:25, 19 July 2018 (UTC)

Lead

• "Ampato (possibly from Quechua hamp'atu[1] or from Aymara jamp'atu[2], both meaning "frog") is a dormant 6,288-metre (20,630 ft) stratovolcano in the Andes of southern Peru, about 70–75 kilometres (43–47 mi) northwest of Arequipa." - maybe spread out some of this into two sentences? It's just a lot to digest in the first sentence
• "Holocene ash layers in surrounding peat bogs may testify the occurrence of recent eruptions." - missing "to" after "testify"

Done. Jo-Jo Eumerus (talk, contributions) 16:42, 25 July 2018 (UTC)

Geography and geomorphology

• "the city of Arequipa lies 70–75 kilometres (43–47 mi) southeast of Ampato.[4]" - instead of repeating the volcano name, maybe just "kilometres... to the southeast"
• "some of which have had eruptions in historical time including El Misti, Huaynaputina, Sabancaya and Ubinas." - instead of "have had eruptions", why not "erupted in historical time"
• "The edifice is incised by glacial valleys.[10]" - comes abruptly, perhaps move within the section to the last paragraph?

Remedied. Jo-Jo Eumerus (talk, contributions) 16:42, 25 July 2018 (UTC)

Geology

• "after the opening of the southern Atlantic Ocean.[8]" - what does opening mean here? why is that important?
• "The present day volcanic arc resulted from a narrowing of the Barroso group.[12]" - again, what is the importance of the narrowing? needs more explanation
• "but appears to be about on average 0.08–0.09 cubic kilometres per millennium (0.019–0.022 cu mi/ka) but without considering "spurt"-like behaviour; volcano growth in fits and spurts has been observed at many other volcanic arc volcanoes.[16]" - repetition of "but" dilutes the meaning/intent of this sentence

I believe the importance is that this opening causes South America to move westward and increased the rate of subduction. Remedied the others. Jo-Jo Eumerus (talk, contributions) 16:42, 25 July 2018 (UTC)

@Jo-Jo Eumerus: Can you add that to the article? I'll still pass this, but fix that please. ceranthor 17:18, 25 July 2018 (UTC)

Eruptive history

• "The southern cone developed in several different stages; a first lavic stage generated lava flows emanating from the summit;[20" - what's a lavic stage? explain
• " a first lavic stage generated lava flows emanating from the summit;[20] dating of two lava flows has produced ages of 34,000 ± 8,000 and 40,000 ± 3,000 years before present. More than 20 metres (66 ft) of block-and-ash flows was erupted onto the eastern and western flanks of Ampato,[21] and the block-and-ash flows consist of one andesitic and one dacitic formation; both appear to relate to a lava dome forming stage of volcanic activity. These block-and-ash flows are themselves covered on both the eastern and the western flanks by more thick lava flows, which make up a 150–200 metres (490–660 ft) thick unit and again consist of one andesitic and one dacitic unit; both units appear to have been erupted during the last glacial maximum.[22]" - lots of lava flows and block and ash flows in close vicinity; try finding synonyms or rewording?
• "Early Holocene (11,000 - 8,000 years before present) ash layers" - if you're going to explain what Holocene refers to, do it at the first mention, not here

Got these; Holocene is explained here to connect it to the timeline where it is the first mention. Jo-Jo Eumerus (talk, contributions) 16:42, 25 July 2018 (UTC)

Human history

• "Ampato was the site of human sacrifice during Inka times" - why Inka rather than Inca?

References

• Ref 28 should be decapitalized
• Earwig's tool checks out
• References seem comprehensive and reliable

Seems to be in good shape. Will pass once these are addressed. ceranthor 14:45, 25 July 2018 (UTC)

​ I think I got all of these. Jo-Jo Eumerus (talk, contributions) 16:42, 25 July 2018 (UTC)

Great! Fix the one issue mentioned above, please. I will pass this assuming that will be addressed. ceranthor 17:18, 25 July 2018 (UTC)

Explained that a little. Jo-Jo Eumerus (talk, contributions) 17:38, 25 July 2018 (UTC)