tag:blogger.com,1999:blog-94515998673100216.post5990217768052657143..comments2023-07-16T04:14:18.341-05:00Comments on RetiredForGood: A Rainy WeekendSandyhttp://www.blogger.com/profile/02265922352726668243noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-94515998673100216.post-26625636902337766642010-03-20T17:55:07.167-05:002010-03-20T17:55:07.167-05:00Thanks, Granny J, for asking... According to Wikip...Thanks, Granny J, for asking... According to Wikipedia, a fairly accurate source, it is Columnar Basalt, which results from cooling of thick lava flows, and depending on the rate of cooling creates contractual joints or fractures. While traveling across the U.S. this last summer we saw many examples of this structure, especially near the eastern border of Idaho.<br />Here's a link for you andSandyhttps://www.blogger.com/profile/02265922352726668243noreply@blogger.comtag:blogger.com,1999:blog-94515998673100216.post-76005345651472081612010-03-19T13:11:26.895-05:002010-03-19T13:11:26.895-05:00About those table mountains -- any idea of their c...About those table mountains -- any idea of their composition? Lava flows? Or sedimentary?Granny Jhttps://www.blogger.com/profile/07302978680897139954noreply@blogger.com