Talk:Newberry Volcano

message: Someone told me that Paulina peak was at one time the world's tallest mountain. Has anyone else heard this? 66.195.36.133 (talk) 20:29, 10 February 2009 (UTC)
replies: text: I had not heard that before.  When I first saw your note, I highly doubted it.  But after reading the Smithsonian summary, it's not so hard to believe that a  wide volcano with such unusual lava composition could well have been quite tall.  —EncMstr (talk) 20:46, 10 February 2009 (UTC)
replies: text: This is very, very unlikely. To add enough height to surpass Everest, it would make Newberry's pre-erupted summit abnormally tower-like. Mountains just don't exist like that. Especially with volcanoes. Leitmotiv (talk) 04:09, 28 February 2010 (UTC)
replies: text: Mauna Kea is the world's tallest mountain. Of course, that's counting the massive height which is not above sea level.  —Preceding unsigned comment added by Guanlongwucaii (talk • contribs) 12:31, 7 March 2010 (UTC)
thread_title:  once world's tallest mountain? 

message: There appears to be some contradictory information in the Geology section about when (and how) Newberry Caldera formed.
One paragraph says this:
The caldera-forming event occurred about 75,000 years ago from a major explosive eruption.[49] It formed the crater lakes and Paulina Peak...
I checked the citation (Jensen & Donnelly-Nolan 2017), and it does say that the caldera formed in an event about 75,000 years ago, but this contradicts the cited information in the very next paragraph of the article as follows:
The caldera has reformed several times throughout the volcano's history ... The first caldera—the volcano's largest caldera, forming approximately 300,000 years ago—was produced by the eruption of 2.5 cubic miles (10 km3) of pyroclastic ejecta, which created the Tepee Draw tuff and ash deposits that cover the volcano's eastern flank.[51] The last crater formed after an explosive eruption about 80,000 years ago ... [55] Since the last caldera-forming eruption 80,000 years ago...
I don't have access to Harris 2005, but perhaps someone who does could reword one or both of these paragraphs to clarify?
Ddaveonz (talk) 10:40, 28 July 2020 (UTC)
replies: text: There has likely been more than one caldera forming event. The most recent being the one 75,000 years ago. Donnelly-Nolan is the authoritative source on the matter as she is the leading geologist from the USGS studying it, but I don't know what other abstracts she's released regarding these events. Until we can access Harris, it's best we leave it as is. Leitmotiv (talk) 19:36, 28 July 2020 (UTC)

text: Her paper mentions at least 3 caldera forming events, the most recent being 75,000 years ago. I find it interesting that Donnelly-Nolan doesn't reference Harris in her work, at least in the papers I am reading. Leitmotiv (talk) 19:53, 28 July 2020 (UTC)
thread_title:  Contradictory information 

message: The article claims Newberry has an area of  when its lava flows are taken into account. What it didn't include, however, was its true areal extent of  which still needs to be worked into the article somehow. I included it with this edit but the rest of the article including the volcano's length are based on the inclusion of lava flows. If you look at File:Newberry Volcano Map.png you can see the actual volcano (dark gray) has a length of about 40 miles instead of 75 miles. The 1992 Volcanoes of North America book used as a source in this article gives Newberry's areal extent as , as does this 1999 USGS document and the GVP website. Volcanoguy 08:16, 5 September 2021 (UTC)
thread_title:  Areal extent