tag:blogger.com,1999:blog-5211670216140060946.post8234768536801821174..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: Time Almost Not Beyond Imagining: Recent Volcanism on the Colorado PlateauGarry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5211670216140060946.post-76994624813585734652009-08-18T11:54:24.678-07:002009-08-18T11:54:24.678-07:00Thanks for the comment. You aren't far off, as...Thanks for the comment. You aren't far off, as it comes down to definitions. Stratovolcano and composite cone are used so interchangeably that the fact that they are different is often lost in translation. Bill Williams and Kendricks and Mt. Elden are complex overlapping multiple domes, mainly composed of dacite and rhyolite. They are larger than single lava (plug)domes, and such mountains are often classed as composite cones. What they lack is any sense of layering (ash and lava flows) that defines a stratovolcano. I have the same problem defining volcanoes here in California, where Mammoth Mountain has a complex structure, but is not really a stratovolcano as strictly defined.Garry Hayeshttps://www.blogger.com/profile/00531226195147986457noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-21575628957365661092009-08-18T10:09:11.201-07:002009-08-18T10:09:11.201-07:00I could very well be wrong, but I thought Mt. Bill...I could very well be wrong, but I thought Mt. Bill Williams was also thought to be a stratovolcano?<br /><br />Apparently cores from northeast of the San Francisco Peaks show alot of volcaniclastic debris, lending support for the Mt. St. Helens hypothesis.220myahttps://www.blogger.com/profile/06403919493457640549noreply@blogger.com