https://gregladen.com/blog/2008/01/08/deep-sea-evidence-of-major-vol/ Fri, 11 Jan 2008 21:46:15 +0000 hourly 1 https://wordpress.org/?v=6.4.8 https://gregladen.com/blog/2008/01/08/deep-sea-evidence-of-major-vol/#comment-2654 Fri, 11 Jan 2008 21:46:15 +0000 http://scienceblogs.com/gregladen/2008/01/08/deep-sea-evidence-of-major-vol/#comment-2654 I think this would be excellent information for teachers. We are often confronted with questions of, “How do you know how old (fill in the blank) is?” This post does a good job of explaining in understandable terms how geologists analyze volcanic ashes.

]]> https://gregladen.com/blog/2008/01/08/deep-sea-evidence-of-major-vol/#comment-2653 Fri, 11 Jan 2008 21:41:53 +0000 http://scienceblogs.com/gregladen/2008/01/08/deep-sea-evidence-of-major-vol/#comment-2653 So is that where the pumice stone that I use comes from?

]]>