tag:blogger.com,1999:blog-5211670216140060946.post6339415668088737085..comments2024-03-17T18:37:36.377-07:00Comments on Geotripper: Here's a Hawaiian Mystery for You: Where Did These Circles Come From?Garry Hayeshttp://www.blogger.com/profile/00531226195147986457noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5211670216140060946.post-54738025169503657232017-06-02T11:05:56.039-07:002017-06-02T11:05:56.039-07:00Jay, thanks for the kind comments, and congratulat...Jay, thanks for the kind comments, and congratulations, you got it exactly right!Garry Hayeshttps://www.blogger.com/profile/00531226195147986457noreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-5841887158949408302017-05-27T01:44:07.793-07:002017-05-27T01:44:07.793-07:00Hi Garry!
Long time reader; first time commenter....Hi Garry!<br /><br />Long time reader; first time commenter. Love your blog - love the commentary, love the photography, love the geology. And since I want to be a volcanologist when I grow up (I'm 42) I thought I'd venture a guess.<br /><br />I think they're impact craters from ejected blocks. That, along with the supposition from Anonymous above, would allow for the deposition of wind-blown sand, tephra, loess, water - and seeds - into the roughly circular depressions. I think that would explain the rocks in the centers as well.<br /><br />Thank you for your blog, and have a safe & happy Memorial Day week-end!<br />Jay Daniels<br />Monroe Center, ILAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-2189731075134590972017-05-25T10:25:52.425-07:002017-05-25T10:25:52.425-07:00I suspect the circle is a depression and the small...I suspect the circle is a depression and the smaller particles are falling or being blown into them. If it's a depression that captures more water it could explain the prevalence of a plant in the middle. I suspect the wind is carrying the smaller particles uphill from lower where sand is expected to be found.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-6281098368039259732017-05-25T07:03:21.635-07:002017-05-25T07:03:21.635-07:00The "gravel" could be (and probably is) ...The "gravel" could be (and probably is) cinders.<br />At first glance, I thought the circles could be due to frost action. I've seen somewhat similar rock circles and stripes that formed that way... But I'm not sure if periglacial features can form in only a few centuries, and I'm not sure if the summit of Kilauea is high enough for significant frost action.<br />So what's your idea, Garry?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5211670216140060946.post-83725564620436508492017-05-25T03:30:11.446-07:002017-05-25T03:30:11.446-07:00Gas release? Otherwise I got nothing :-)Gas release? Otherwise I got nothing :-)Vicky Gallardohttps://www.blogger.com/profile/01102363858329374668noreply@blogger.com