Talk:Continental arc

Comments from Graeme Bartlett

• Where is everyone else's comment?
• I would suggest that you convert your text to full sentences rather than using dot points and abbreviations. For example in the Petrology section it is unclear how the types of rocks are connected to continental arc.
• Is there any distinctive thing to say about isotopic composition?
• Could you expand on what the volatiles do to the asthenosphere?
• What is the different effect of the magma going through continental crust versus oceanic?
• Is there more theory about the shape and size of the arc?
• What determines the density of volcanoes?
• Please either link terms I am not familiar with or explain them. eg: refertilization
• Perhaps you could have a world map showing active and historic continental arcs.
• Graeme Bartlett (talk) 22:04, 21 October 2014 (UTC)

Comments from Andrew Webb

Instead of opening about island arcs, volcanic arcs, and continental arcs, I would suggest first defining only a continental arc. Since your page is only about continental arcs, defining other arc types is not very important, unless you use it to distinguish between them all. Maybe expand on your definition of a continental arc in the overview, then you can say something along the lines of "continental arcs differ from island, volcanic, and oceanic arcs because....." at the end of the overview, since it is not directly important in your page. You can repeat info from your page to the overview, so I would suggest using some info from the Origin section in the overview.

The pictures under the table describing continental arcs could be a little bigger, they are hard to see.

Some typos and grammatical errors: "Volcanic arcs are made of an arc-shaped chain of volcanoes. The position of which could be continental or mid-ocean. While an island arc must be offshore, it may not necessarily be volcanic (eg. Hellenic arc)."

"Like their names, an oceanic arc is a volcanic arc which is built on oceanic crust while continental arcs are built on continental crust."

"When the hot magma is ponded, extensive fractional crystallization, assimilation, and probably melting of the less refractory lower crustal rocks will take place, which can be described as a process called underplating." < Remove "that is" at the beginning and start the sentence at "When".

"The petrogenesis of continental arcs is generally different from those of oceanic arcs, so more calc-alkaline and alkaline rocks can be found at a continental arc, with fewer tholeiites and low-K rocks"

Awebb6 (talk) 06:48, 18 November 2014 (UTC)

External links modified

Hello fellow Wikipedians,

I have just modified one external link on Continental arc. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20070531170502/http://www2.nature.nps.gov/geology/usgsnps/province/cascade2.html to http://www2.nature.nps.gov/geology/usgsnps/province/cascade2.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 16:07, 12 August 2017 (UTC)